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2. Advances in GeSn alloys for MIR applications

Author

Reboud, V., Concepción, O., Du, W., El Kurdi, M., Hartmann, J.M., Ikonic, Z., Assali, S., Pauc, N., Calvo, V., Cardoux, C., Kroemer, E., Coudurier, N., Rodriguez, P., Yu, S.-Q., Buca, D., and Chelnokov, A.

Published
2024
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3. Lasing in Group-IV materials

Author

Reboud, V., Buca, D., Sigg, H., Hartmann, J. M., Ikonic, Z., Pauc, N., Calvo, V., Rodriguez, P., and Chelnokov, A.

Subjects
Physics - Optics, Physics - Applied Physics
Abstract

Silicon photonics in the near-Infra-Red, up to 1.6 um, is already one of key technologies in optical data communications, particularly short-range. It is also being prospected for applications in quantum computing, artificial intelligence, optical signal processing, where complex photonic integration is to be combined with large-volume fabrication. However, silicon photonics does not yet cover a large portion of applications in the mid-IR. In the 2 to 5 um wavelength range, environmental sensing, life sensing, and security all rely on optical signatures of molecular vibrations to identify complex individual chemical species. The markets for such analysis are huge and constantly growing, with a push for sensitivity, specificity, compactness, low-power operation and low cost. An all-group-IV, CMOS-compatible mid-IR integrated photonic platform would be a key enabler in this wavelength range. As for other wavelengths, such a platform should be complete with low-loss guided interconnects, detectors, modulators, eventually, and most importantly efficient and integrated light sources. This chapter reviews recent developments in the fields of mid-IR silicon-compatible optically and electrically pumped lasers, light emitting diodes and photodetectors based on Ge, GeSn and SiGeSn alloys. It contains insights into the fundamentals of these developments, including band structure modelling, material growth and processing techniques., Comment: Silicon Photonics IV: Innovative Frontiers, edited by David J. Lockwood and Lorenzo Pavesi, Springer series Topics in Applied Physics (2021)

Published
2020

4. Tunable coupling of two mechanical resonators by a graphene membrane

Author

Verbiest, G. J., Goldsche, M., Sonntag, J., Khodkov, T., Driesch, N. von den, Buca, D., and Stampfer, C.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science
Abstract

Coupled nanomechanical resonators are interesting for both fundamental studies and practical applications as they offer rich and tunable oscillation dynamics. At present, the mechanical coupling in such systems is often mediated by a fixed geometry, such as a joint clamping point of the resonators or a displacement-dependent force. Here we show a graphene-integrated electromechanical system consisting of two physically separated mechanical resonators -- a comb-drive actuator and a suspended silicon beam -- that are tunably coupled by a graphene membrane. The graphene membrane, moreover, provides a sensitive electrical read-out for the two resonating systems silicon structures showing 16 different modes in the frequency range from 0.4~to 24~MHz. In addition, by pulling on the graphene membrane with an electrostatic potential applied to one of the silicon resonators, we control the mechanical coupling, quantified by the $g$-factor, from 20 kHz to 100 kHz. Our results pave the way for coupled nanoelectromechanical systems requiring controllable mechanically coupled resonators., Comment: 11 pages, 11 figures, 2 tables

Published
2020

5. Ultra-low threshold cw and pulsed lasing in tensile strained GeSn alloys

Author

Elbaz, A., Buca, D., Driesch, N. Von den, Pantzas, K., Patriarche, G., Zerounian, N., Herth, E., Checoury, X., Sauvage, S., Sagnes, I., Foti, A., Ossikovski, R., Hartmann, J. -M., Boeuf, F., Ikonic, Z., Boucaud, P., Grutzmacher, D., and Kurdi, M. El

Subjects
Physics - Applied Physics, Condensed Matter - Materials Science, Physics - Optics
Abstract

GeSn alloys are the most promising semiconductors for light emitters entirely based on group IV elements. Alloys containing more than 8 at.% Sn have fundamental direct band-gaps, similar to conventional III-V semiconductors and thus can be employed for light emitting devices. Here, we report on GeSn microdisk lasers encapsulated with a SiNx stressor layer to produce tensile strain. A 300nm GeSn layer with 5.4 at.% Sn, which is an indirect band-gap semiconductor as-grown with a compressive strain of -0.32 %, is transformed via tensile strain engineering into a truly direct band-gap semiconductor. In this approach the low Sn concentration enables improved defect engineering and the tensile strain delivers a low density of states at the valence band edge, which is the light hole band. Continuous wave (cw) as well as pulsed lasing are observed at very low optical pump powers. Lasers with emission wavelength of 2.5 um have thresholds as low as 0.8kWcm^-2 for ns-pulsed excitation, and 1.1kWcm^-2 under cw excitation. These thresholds are more than two orders of magnitude lower than those previously reported for bulk GeSn lasers, approaching these values obtained for III-V lasers on Si. The present results demonstrate the feasabiliy and are the guideline for monolithically integrated Si-based laser sources on Si photonics platform.

Published
2020
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7. Integrated impedance bridge for absolute capacitance measurements at cryogenic temperatures and finite magnetic fields

Author

Verbiest, G. J., Janssen, H., Xu, D., Ge, X., Goldsche, M., Sonntag, J., Khodkov, T., Banszerus, L., Driesch, N. von den, Buca, D., Watanabe, K., Taniguchi, T., and Stampfer, C.

Subjects
Physics - Instrumentation and Detectors, Physics - Applied Physics
Abstract

We developed an impedance bridge that operates at cryogenic temperatures (down to 60 mK) and in perpendicular magnetic fields up to at least 12 T. This is achieved by mounting a GaAs HEMT amplifier perpendicular to a printed circuit board containing the device under test and thereby parallel to the magnetic field. The measured amplitude and phase of the output signal allows for the separation of the total impedance into an absolute capacitance and a resistance. Through a detailed noise characterization, we find that the best resolution is obtained when operating the HEMT amplifier at the highest gain. We obtained a resolution in the absolute capacitance of 6.4~aF$/\sqrt{\textrm{Hz}}$ at 77 K on a comb-drive actuator, while maintaining a small excitation amplitude of 15~$k_\text{B} T/e$. We show the magnetic field functionality of our impedance bridge by measuring the quantum Hall plateaus of a top-gated hBN/graphene/hBN heterostructure at 60~mK with a probe signal of 12.8~$k_\text{B} T/e$., Comment: 7 pages, 5 figures

Published
2019
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8. Fabrication of comb-drive actuators for straining nanostructured suspended graphene

Author

Goldsche, M., Verbiest, G. J., Khodkov, T., Sonntag, J., Driesch, N. von den, Buca, D., and Stampfer, C.

Subjects
Physics - Applied Physics, Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

We report on the fabrication and characterization of an optimized comb-drive actuator design for strain-dependent transport measurements on suspended graphene. We fabricate devices from highly p-doped silicon using deep reactive ion etching with a chromium mask. Crucially, we implement a gold layer to reduce the device resistance from $\approx51.6$ k$\mathrm{\Omega}$ to $\approx236$ $\mathrm{\Omega}$ at room temperature in order to allow for strain-dependent transport measurements. The graphene is integrated by mechanically transferring it directly onto the actuator using a polymethylmethacrylate membrane. Importantly, the integrated graphene can be nanostructured afterwards to optimize device functionality. The minimum feature size of the structured suspended graphene is 30 nm, which allows for interesting device concepts such as mechanically-tunable nanoconstrictions. Finally, we characterize the fabricated devices by measuring the Raman spectrum as well as the a mechanical resonance frequency of an integrated graphene sheet for different strain values., Comment: 10 pages, 9 figures

Published
2018
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10. Tailoring mechanically-tunable strain fields in graphene

Author

Goldsche, M., Sonntag, J., Khodkov, T., Verbiest, G., Reichardt, S., Neumann, C., Ouaj, T., Driesch, N. von den, Buca, D., and Stampfer, C.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics, Physics - Applied Physics
Abstract

There are a number of theoretical proposals based on strain engineering of graphene and other two-dimensional materials, however purely mechanical control of strain fields in these systems has remained a major challenge. The two approaches mostly used so far either couple the electrical and mechanical properties of the system simultaneously or introduce some unwanted disturbances due to the substrate. Here, we report on silicon micro-machined comb-drive actuators to controllably and reproducibly induce strain in a suspended graphene sheet, in an entirely mechanical way. We use spatially resolved confocal Raman spectroscopy to quantify the induced strain, and we show that different strain fields can be obtained by engineering the clamping geometry, including tunable strain gradients of up to 1.4 %/$\mu$m. Our approach also allows for multiple axis straining and is equally applicable to other two-dimensional materials, opening the door to an investigating their mechanical and electromechanical properties. Our measurements also clearly identify defects at the edges of a graphene sheet as being weak spots responsible for its mechanical failure., Comment: Keywords: Graphene, MEMS, Raman spectroscopy, strain engineering, pseudomagnetic field

Published
2017
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11. Atomic Order in Non-Equilibrium Silicon-Germanium-Tin Semiconductors

Author

Mukherjee, S., Kodali, N., Isheim, D., Wirths, S., Hartmann, J. M., Buca, D., Seidman, D. N., and Moutanabbir, O.

Subjects
Condensed Matter - Materials Science
Abstract

The precise knowledge of the atomic order in monocrystalline alloys is fundamental to understand and predict their physical properties. With this perspective, we utilized laser-assisted atom probe tomography to investigate the three-dimensional distribution of atoms in non-equilibrium epitaxial Sn-rich group IV SiGeSn ternary semiconductors. Different atom probe statistical analysis tools including frequency distribution analysis, partial radial distribution functions, and nearest neighbor analysis were employed in order to evaluate and compare the behavior of the three elements to their spatial distributions in an ideal solid solution. This atomistic-level analysis provided clear evidence of an unexpected repulsive interaction between Sn and Si leading to the deviation of Si atoms from the theoretical random distribution. This departure from an ideal solid solution is supported by first principal calculations and attributed to the tendency of the system to reduce its mixing enthalpy throughout the layer-by-layer growth process., Comment: 15 pages, 4 figures

Published
2017
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12. Lasing in Group-IV Materials

Author

Reboud, V., Buca, D., Sigg, H., Hartmann, J. M., Ikonic, Z., Pauc, N., Calvo, V., Rodriguez, P., Chelnokov, A., Lee, Young Pak, Series Editor, Lockwood, David J., Series Editor, Ossi, Paolo M., Series Editor, Yamanouchi, Kaoru, Series Editor, and Pavesi, Lorenzo, editor

Published
2021
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13. Tunable mechanical coupling between driven microelectromechanical resonators

Author

Verbiest, G. J., Xu, D., Goldsche, M., Khodkov, T., Barzanjeh, S., Driesch, N. von den, Buca, D., and Stampfer, C.

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

We present a microelectromechanical system, in which a silicon beam is attached to a comb-drive actuator, that is used to tune the tension in the silicon beam, and thus its resonance frequency. By measuring the resonance frequencies of the system, we show that the comb-drive actuator and the silicon beam behave as two strongly coupled resonators. Interestingly, the effective coupling rate (~ 1.5 MHz) is tunable with the comb-drive actuator (+10%) as well as with a side-gate (-10%) placed close to the silicon beam. In contrast, the effective spring constant of the system is insensitive to either of them and changes only by $\pm$ 0.5%. Finally, we show that the comb-drive actuator can be used to switch between different coupling rates with a frequency of at least 10 kHz., Comment: 5 pages, 4 figures, 1 table

Published
2016
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18. Determinants of emergency Cesarean delivery in pregnancies complicated by placenta previa with or without placenta accreta spectrum disorder: analysis of ADoPAD cohort.

Author

Lucidi, A., Fratelli, N., Maggi, C., Cavalli, C., Sciarrone, A., Buca, D., Garofalo, A., Viora, E., Vergani, P., Betti, M., Vaglio Tessitore, I., Cavaliere, A. F., Buongiorno, S., Vidiri, A., Fabbri, E., Ferrazzi, E., Maggi, V., Cetin, I., Frusca, T., and Ghi, T.

Abstract

Objectives: To investigate the rate and outcome of emergency Cesarean delivery (CD) in women with placenta previa with or without placenta accreta spectrum disorders (PAS) and to elucidate the diagnostic accuracy of ultrasound in predicting emergency CD. Methods: This was a secondary analysis of a multicenter prospective study involving 16 referral hospitals in Italy (ADoPAD study). Inclusion criteria were women with placenta previa minor (< 20 mm from the internal cervical os) or placenta previa major (covering the os), aged ≥ 18 years, who underwent transabdominal and transvaginal ultrasound assessment at ≥ 26 + 0 weeks of gestation. The primary outcome was the occurrence of emergency CD, defined as the need for immediate surgical intervention performed for emergency maternal or fetal indication, including active labor, cumulative maternal bleeding > 500 mL, severe and persistent vaginal bleeding such that maternal hemodynamic stability could not be achieved or maintained, or category‐III fetal heart rate tracing unresponsive to resuscitative measures. The primary outcome was reported separately in the population of women with placenta previa and no PAS confirmed after birth and in those with PAS. The secondary aim was to report on the strength of association and to test the diagnostic accuracy of ultrasound in predicting emergency CD. Univariate, multivariate and diagnostic accuracy analyses were used to analyze the data. Results: A total of 450 women, including 97 women with placenta previa and PAS and 353 with placenta previa only, were analyzed. In women with placenta previa and PAS, emergency CD was required in 20.6% (95% CI, 14–30%), and 60.0% (12/20) delivered before 34 weeks of gestation. The mean gestational age at delivery was 32.3 ± 2.7 weeks in women undergoing emergency CD and 34.9 ± 1.8 weeks in those undergoing elective CD (P < 0.001). Women undergoing emergency CD had a higher median estimated blood loss (2500 (interquartile range (IQR), 1350–4500) vs 1100 (IQR, 625–2500) mL; P = 0.012), mean units of blood transfused (7.3 ± 8.8 vs 2.5 ± 3.4; P = 0.02) and more frequent placement of a mechanical balloon (50.0% vs 16.9%; P = 0.002) compared with those undergoing elective CD. On univariate analysis, the presence of interrupted retroplacental space, interrupted bladder line and placental lacunae was more common in women not experiencing emergency CD. No comprehensive multivariate analysis could be performed in this subgroup of women. Ultrasound signs of PAS, including presence of interrupted retroplacental space, interrupted bladder line and placental lacunae, were not predictive of emergency CD. In women with placenta previa but no PAS, emergency CD was required in 31.2% (95% CI, 26.6–36.2%), and 32.7% (36/110) delivered before 34 weeks of gestation. The mean gestational age at delivery was lower in women undergoing emergency CD compared with those undergoing elective CD (34.2 ± 2.9 vs 36.7 ± 1.6 weeks; P < 0.001). Pregnancies complicated by emergency CD were associated with a lower birth weight (2330 ± 620 vs 2800 ± 480 g; P < 0.001) and had a higher risk of need for blood transfusion (22.7% vs 10.7%; P = 0.003) compared with those who underwent elective CD. On multivariate analysis, only placental thickness (odds ratio (OR), 1.02 (95% CI, 1.00–1.03); P = 0.046) and cervical length < 25 mm (OR, 3.89 (95% CI, 1.33–11.33); P = 0.01) were associated with emergency CD. However, a short cervical length showed low diagnostic accuracy for predicting emergency CD in these women. Conclusion: Emergency CD occurred in about 20% of women with placenta previa and PAS and 30% of those with placenta previa only and was associated with worse maternal outcome compared with elective intervention. Prenatal ultrasound is not predictive of the risk of emergency CD in women with these disorders. © 2023 International Society of Ultrasound in Obstetrics and Gynecology. [ABSTRACT FROM AUTHOR]

Published
2024
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21. Combining x-ray real and reciprocal space mapping techniques to explore the epitaxial growth of semiconductors

Author

Magalhaes, S., Salgado Cabaco, J., Concepcion, O., Buca, D., Stachowicz, M., Oliveira, F., Cerqueira, M. F., Lorenz, K., Alves, E., Magalhaes, S., Salgado Cabaco, J., Concepcion, O., Buca, D., Stachowicz, M., Oliveira, F., Cerqueira, M. F., Lorenz, K., and Alves, E.

Abstract

In the present work, the importance of determining the strain states of semiconductor compounds with high accuracy is demonstrated. For the matter in question, new software titled LAPAs, the acronym for LAttice PArameters is presented. The lattice parameters as well as the chemical composition of Al1−xIn x N and Ge1−xSn x compounds grown on top of GaN- and Ge- buffered c-Al2O3 and (001) oriented Si substrates, respectively, are calculated via the real space Bond’s method. The uncertainties in the lattice parameters and composition are derived, compared and discussed with the ones found via x-ray diffraction reciprocal space mapping. Broad peaks lead to increased centroid uncertainty and are found to constitute up to 99% of the total uncertainty in the lattice parameters. Refraction correction is included in the calculations and found to have an impact of 0.001 Å in the lattice parameters of both hexagonal and cubic crystallographic systems and below 0.01% in the quantification of the InN and Sn contents. Although the relaxation degrees of the nitride and tin compounds agree perfectly between the real and reciprocal-spaces methods, the uncertainty in the latter is found to be ten times higher. The impact of the findings may be substantial for the development of applications and devices as the intervals found for the lattice match the condition of Al1−xIn x N grown on GaN templates vary between ∼1.8% (0.1675-0.1859) and 0.04% (0.1708-0.1712) if derived via the real- and reciprocal spaces methods. © 2023 The Author(s). Published by IOP Publishing Ltd.

Published
2023

39. Erratum: Risk factors associated with adverse fetal outcomes in pregnancies affected by Coronavirus disease 2019 (COVID-19): A secondary analysis of the WAPM study on COVID-19 (Journal of Perinatal Medicine (2020) 48:9 (950-958) DOI: 10.1515/jpm-2020-0355)

Author

Di Mascio D., Sen C., Saccone G., Galindo A., Grunebaum A., Yoshimatsu J., Stanojevic M., Kurjak A., Chervenak F., Vena F., Giancotti A., Brunelli R., Muzii L., Panici P. B., Mollo A., Berghella V., Flacco M. E., Manzoli L., Esposito R., Coviello A., Cerbone M., Maruotti G. M., Nazzaro G., Locci M., Guida M., Di Spiezio Sardo A., Bifulco G., Zullo F., Herraiz I., Villalain C., Suarez M. J. R., Gambacorti-Passerini Z. M., De Los Angeles Anaya Baz M., Galan E. V. A., Carbone I. F., Lopez Y. C., De Leon Luis J. A., Hernandez I. C., Venturella R., Rizzo G., Mappa I., Gerosolima G., Hellmeyer L., Frusca T., Volpe N., Schera G. B. L., Fieni S., Esposito E., Simonazzi G., Di Donna G., Youssef A., Gatta A. N. D., Di Donna M. C., Chiantera V., Buono N., Sozzi G., Greco P., Morano D., Bianchi B., Marino M. G. L., Laraud F., Ramone A., Cagnacci A., Barra F., Gustavino C., Ferrero S., Ghezzi F., Cromi A., Lagana A. S., Longo V. L., Stollagli F., Puri L., Sirico A., Scambia G., Lanzone A., Driul L., Fabiana Cecchini D., Xodo S., Rodriguez B., Mercado-Olivares F., Elkafrawi D., Sisti G., Morlando M., Schiattarella A., Colacurci N., De Franciscis P., Valori E., Cataneo I., Lenzi M., Sandri F., Buscemi R., Gattei G., Della Sala F., Rovellotti M. C., Done E., Faron G., Gucciardo L., Luigi N., Sorrentino F., Vasciaveo L., Liberati M., Buca D., Leombroni M., Di Sebastiano F., Di Tizio L., D'Antonio F., Gazzolo D., Franchi M., Ianniciello Q. C., Garzon S., Petriglia G., Borrello L., Nieto-Calvache A. J., Burgos-Luna J. M., Kadji C., Carlin A., Bevilacqua E., Moucho M., Pinto P. V., Figueiredo R., Rosello J. M., Loscalzo G., Martinez-Varea A., Diago V., Lopez J. S. J., Aykanat A. Y., Cosma S., Carosso A., Benedetto C., Bermejo A., Feuerschuette O. H. M., Uyaniklar O., Ocakouglu S. R., Atak Z., Gunduz R., Haberal E. T., Froessler B., Parange A., Palm P., Samardjiski I., Okuyan E., Daskalakis G., Antsaklis P., De Sa R. A. M., Pittaro A., Gonzalez-Duran M. L., Guisan A. C., Genc S. O., Zlatohlavkova B., Piqueras A. L., Oliva D. E., Cil A. P., Api O., Ples L., Kyvernitakis I., Lila A., Granese R., Ercoli A., Zoccali G., Villasco A., Biglia N., Madalina C., Costa E., Daelemans C., Pintiaux A., Cueto E., Hadar E., Dollinger S., Sinai N. A. B., Huertas E., Arango P., Sanchez A., Schvartzman J. A., Cojocaru L., Turan S., Turan O., Di Dedda M. C., Molpeceres R. G., Zdjelar S., Premru-Srsen T., Cerar L. K., Druskovic M., De Robertis V., Stefanovic V., Nupponen I., Nelskyla K., Khodjaeva Z., Gorina K. A., Sukhikh G. T., Visentin S., Cosmi E., Ferrari J., Gatti A., Luvero D., Angioli R., Palumbo M., D'Urso G., Colaleo F., Rapisarda A. M. C., Di Mascio D., Sen C., Saccone G., Galindo A., Grunebaum A., Yoshimatsu J., Stanojevic M., Kurjak A., Chervenak F., Vena F., Giancotti A., Brunelli R., Muzii L., Panici P.B., Mollo A., Berghella V., Flacco M.E., Manzoli L., Esposito R., Coviello A., Cerbone M., Maruotti G.M., Nazzaro G., Locci M., Guida M., Di Spiezio Sardo A., Bifulco G., Zullo F., Herraiz I., Villalain C., Suarez M.J.R., Gambacorti-Passerini Z.M., De Los Angeles Anaya Baz M., Galan E.V.A., Carbone I.F., Lopez Y.C., De Leon Luis J.A., Hernandez I.C., Venturella R., Rizzo G., Mappa I., Gerosolima G., Hellmeyer L., Frusca T., Volpe N., Schera G.B.L., Fieni S., Esposito E., Simonazzi G., Di Donna G., Youssef A., Gatta A.N.D., Di Donna M.C., Chiantera V., Buono N., Sozzi G., Greco P., Morano D., Bianchi B., Marino M.G.L., Laraud F., Ramone A., Cagnacci A., Barra F., Gustavino C., Ferrero S., Ghezzi F., Cromi A., Lagana A.S., Longo V.L., Stollagli F., Puri L., Sirico A., Scambia G., Lanzone A., Driul L., Fabiana Cecchini D., Xodo S., Rodriguez B., Mercado-Olivares F., Elkafrawi D., Sisti G., Morlando M., Schiattarella A., Colacurci N., De Franciscis P., Valori E., Cataneo I., Lenzi M., Sandri F., Buscemi R., Gattei G., Della Sala F., Rovellotti M.C., Done E., Faron G., Gucciardo L., Luigi N., Sorrentino F., Vasciaveo L., Liberati M., Buca D., Leombroni M., Di Sebastiano F., Di Tizio L., D'Antonio F., Gazzolo D., Franchi M., Ianniciello Q.C., Garzon S., Petriglia G., Borrello L., Nieto-Calvache A.J., Burgos-Luna J.M., Kadji C., Carlin A., Bevilacqua E., Moucho M., Pinto P.V., Figueiredo R., Rosello J.M., Loscalzo G., Martinez-Varea A., Diago V., Lopez J.S.J., Aykanat A.Y., Cosma S., Carosso A., Benedetto C., Bermejo A., Feuerschuette O.H.M., Uyaniklar O., Ocakouglu S.R., Atak Z., Gunduz R., Haberal E.T., Froessler B., Parange A., Palm P., Samardjiski I., Okuyan E., Daskalakis G., Antsaklis P., De Sa R.A.M., Pittaro A., Gonzalez-Duran M.L., Guisan A.C., Genc S.O., Zlatohlavkova B., Piqueras A.L., Oliva D.E., Cil A.P., Api O., Ples L., Kyvernitakis I., Lila A., Granese R., Ercoli A., Zoccali G., Villasco A., Biglia N., Madalina C., Costa E., Daelemans C., Pintiaux A., Cueto E., Hadar E., Dollinger S., Sinai N.A.B., Huertas E., Arango P., Sanchez A., Schvartzman J.A., Cojocaru L., Turan S., Turan O., Di Dedda M.C., Molpeceres R.G., Zdjelar S., Premru-Srsen T., Cerar L.K., Druskovic M., De Robertis V., Stefanovic V., Nupponen I., Nelskyla K., Khodjaeva Z., Gorina K.A., Sukhikh G.T., Visentin S., Cosmi E., Ferrari J., Gatti A., Luvero D., Angioli R., Palumbo M., D'Urso G., Colaleo F., Rapisarda A.M.C., Di Mascio, D., Sen, C., Saccone, G., Galindo, A., Grunebaum, A., Yoshimatsu, J., Stanojevic, M., Kurjak, A., Chervenak, F., Vena, F., Giancotti, A., Brunelli, R., Muzii, L., Panici, P. B., Mollo, A., Berghella, V., Flacco, M. E., Manzoli, L., Esposito, R., Coviello, A., Cerbone, M., Maruotti, G. M., Nazzaro, G., Locci, M., Guida, M., Di Spiezio Sardo, A., Bifulco, G., Zullo, F., Herraiz, I., Villalain, C., Suarez, M. J. R., Gambacorti-Passerini, Z. M., De Los Angeles Anaya Baz, M., Galan, E. V. A., Carbone, I. F., Lopez, Y. C., De Leon Luis, J. A., Hernandez, I. C., Venturella, R., Rizzo, G., Mappa, I., Gerosolima, G., Hellmeyer, L., Frusca, T., Volpe, N., Schera, G. B. L., Fieni, S., Esposito, E., Simonazzi, G., Di Donna, G., Youssef, A., Gatta, A. N. D., Di Donna, M. C., Chiantera, V., Buono, N., Sozzi, G., Greco, P., Morano, D., Bianchi, B., Marino, M. G. L., Laraud, F., Ramone, A., Cagnacci, A., Barra, F., Gustavino, C., Ferrero, S., Ghezzi, F., Cromi, A., Lagana, A. S., Longo, V. L., Stollagli, F., Puri, L., Sirico, A., Scambia, G., Lanzone, A., Driul, L., Fabiana Cecchini, D., Xodo, S., Rodriguez, B., Mercado-Olivares, F., Elkafrawi, D., Sisti, G., Morlando, M., Schiattarella, A., Colacurci, N., De Franciscis, P., Valori, E., Cataneo, I., Lenzi, M., Sandri, F., Buscemi, R., Gattei, G., Della Sala, F., Rovellotti, M. C., Done, E., Faron, G., Gucciardo, L., Luigi, N., Sorrentino, F., Vasciaveo, L., Liberati, M., Buca, D., Leombroni, M., Di Sebastiano, F., Di Tizio, L., D'Antonio, F., Gazzolo, D., Franchi, M., Ianniciello, Q. C., Garzon, S., Petriglia, G., Borrello, L., Nieto-Calvache, A. J., Burgos-Luna, J. M., Kadji, C., Carlin, A., Bevilacqua, E., Moucho, M., Pinto, P. V., Figueiredo, R., Rosello, J. M., Loscalzo, G., Martinez-Varea, A., Diago, V., Lopez, J. S. J., Aykanat, A. Y., Cosma, S., Carosso, A., Benedetto, C., Bermejo, A., Feuerschuette, O. H. M., Uyaniklar, O., Ocakouglu, S. R., Atak, Z., Gunduz, R., Haberal, E. T., Froessler, B., Parange, A., Palm, P., Samardjiski, I., Okuyan, E., Daskalakis, G., Antsaklis, P., De Sa, R. A. M., Pittaro, A., Gonzalez-Duran, M. L., Guisan, A. C., Genc, S. O., Zlatohlavkova, B., Piqueras, A. L., Oliva, D. E., Cil, A. P., Api, O., Ples, L., Kyvernitakis, I., Lila, A., Granese, R., Ercoli, A., Zoccali, G., Villasco, A., Biglia, N., Madalina, C., Costa, E., Daelemans, C., Pintiaux, A., Cueto, E., Hadar, E., Dollinger, S., Sinai, N. A. B., Huertas, E., Arango, P., Sanchez, A., Schvartzman, J. A., Cojocaru, L., Turan, S., Turan, O., Di Dedda, M. C., Molpeceres, R. G., Zdjelar, S., Premru-Srsen, T., Cerar, L. K., Druskovic, M., De Robertis, V., Stefanovic, V., Nupponen, I., Nelskyla, K., Khodjaeva, Z., Gorina, K. A., Sukhikh, G. T., Visentin, S., Cosmi, E., Ferrari, J., Gatti, A., Luvero, D., Angioli, R., Palumbo, M., D'Urso, G., Colaleo, F., and Rapisarda, A. M. C.

Subjects
N.A
Abstract

Due to a technical error, the author list at the end of this article is unfortunately incorrect. Elif Gül Yapar Eyi is not a co-author, and therefore, his name and affiliation should not appear in the list. The correct author list and affiliations read as follows: Daniele Di Mascio, Cihat Sen, Gabriele Saccone, Alberto Galindo, Amos Grünebaum, Jun Yoshimatsu, Milan Stanojevic, AsimKurjak, Frank Chervenak, María Jos´e Rodríguez Suárez, Zita Maria Gambacorti-Passerini, María de los Angeles Anaya Baz, Esther Vanessa Aguilar Galán, Yolanda Cuñarro López, Juan Antonio De León Luis, Ignacio Cueto Hernández, Ignacio Herraiz, Cecilia Villalain, Roberta Venturella, Giuseppe Rizzo, Ilenia Mappa, Giovanni Gerosolima, Lars Hellmeyer, Josefine Königbauer, Giada Ameli, Tiziana Frusca, Nicola Volpe, Giovanni Battista Luca Schera, Stefania Fieni, Eutalia Esposito, Giuliana Simonazzi, Gaetana Di Donna, Aly Youssef, Anna Nunzia Della Gatta, Mariano Catello Di Donna, Vito Chiantera, Natalina Buono, Giulio Sozzi, Pantaleo Greco, Danila Morano, Beatrice Bianchi, Maria Giulia Lombana Marino, Federica Laraud, Arianna Ramone, Angelo Cagnacci, Fabio Barra, Claudio Gustavino, Simone Ferrero, Fabio Ghezzi, Antonella Cromi, Antonio Simone Laganá, Valentina Laurita Longo, Francesca Stollagli, Angelo Sirico, Antonio Lanzone, Lorenza Driul, Fabiana Cecchini D, Serena Xodo, Brian Rodriguez, Felipe Mercado-Olivares, Deena Elkafrawi, Giovanni Sisti, Rosanna Esposito, Antonio Coviello, Marco Cerbone, Maddalena Morlando, Antonio Schiattarella, Nicola Colacurci, Pasquale De Franciscis, Ilaria Cataneo, Marinella Lenzi, Fabrizio Sandri, Riccardo Buscemi, Giorgia Gattei, Francesca della Sala, Eleonora Valori, Maria Cristina Rovellotti, Elisa Done, Gilles Faron, Leonardo Gucciardo, Valentina Esposito, Flaminia Vena, Antonella Giancotti, Roberto Brunelli, Ludovico Muzii, Luigi Nappi, Felice Sorrentino, Lorenzo Vasciaveo, Marco Liberati, Danilo Buca, Martina Leombroni, Francesca Di Sebastiano, Luciano Di Tizio, Diego Gazzolo, Massimo Franchi, Quintino Cesare Ianniciello, Simone Garzon, Giuliano Petriglia, Leonardo Borrello, Albaro Jos´e Nieto-Calvache, Juan Manuel Burgos-Luna, Caroline Kadji, Andrew Carlin, Elisa Bevilacqua, Marina Moucho, Pedro Viana Pinto, Rita Figueiredo, Jos´e Morales Roselló, Gabriela Loscalzo, Alicia Martinez-Varea, Vincente Diago, Jesús S Jimenez Lopez, Alicia Yeliz Aykanat, Stefano Cosma, Andrea Carosso, Chiara Benedetto, Amanda Bermejo, Otto Henrique May Feuerschuette, Ozlem Uyaniklar, Sakine Rahimli Ocakouglu, Zeliha Atak, Reyhan Gündüz, Esra Tustas Haberal, Bernd Froessler, Anupam Parange, Peter Palm, Igor Samardjiski, Chiara Taccaliti, Erhan Okuyan, George Daskalakis, Renato Augusto Moreira de Sa, Alejandro Pittaro, Maria Luisa Gonzalez-Duran, Ana Concheiro Guisan, Serife Özlem Genç, Blanka Zlatohlávková, Anna Luengo Piqueras, Dolores Esteban Oliva, Aylin Pelin Cil, Olus Api, Panos Antsaklis, Liana Ples, Ioannis Kyvernitakis, Holger Maul, Marcel Malan, Albert Lila, Roberta Granese, Alfredo Ercoli, Giuseppe Zoccali, Andrea Villasco, Nicoletta Biglia, Ciuhodaru Madalina, Elena Costa, Caroline Daelemans, Axelle Pintiaux, Elisa Cueto, Eran Hadar, Sarah Dollinger, Noa A. Brzezinski Sinai, Erasmo Huertas, Pedro Arango, Amadeo Sanchez, Javier Alfonso Schvartzman, Liviu Cojocaru, Sifa Turan, Ozhan Turan, Maria Carmela Di Dedda, Rebeca Garrote Molpeceres, Snezana Zdjelar, Tanja Premru-Srsen, Lilijana Kornhauser Cerar, Mirjam Druškovic, Valentina De Robertis, Vedran Stefanovic, Irmeli Nupponen, Kaisa Nelskylä, Zulfiya Khodjaeva, Ksenia A. Gorina, Gennady T. Sukhikh, Giuseppe Maria Maruotti, Silvia Visentin, Erich Cosmi, Jacopo Ferrari, Alessandra Gatti, Daniela Luvero, Roberto Angioli, Ludovica Puri, Marco Palumbo, Giusella D’Urso, Francesco Colaleo, Agnese Maria Chiara Rapisarda, Ilma Floriana Carbone, Antonio Mollo, Giovanni Nazzaro, Mariavittoria Locci, Maurizio Guida, Attilio Di Spiezio Sardo, Pierluigi Benedetti Panici, Vincenzo Berghella, Maria Elena Flacco, Lamberto Manzoli, Giuseppe Bifulco, Giovanni Scambia, Fulvio Zullo and Francesco D’Antonio Flaminia Vena, Antonella Giancotti, Roberto Brunelli, Ludovico Muzii and Pierluigi Benedetti Panici, Department of Maternal and Child Health and Urological Sciences, Sapienza University of Rome, Rome, Italy Rosanna Esposito, Antonio Coviello, Marco Cerbone, Giuseppe Maria Maruotti, Giovanni Nazzaro, Mariavittoria Locci, Maurizio Guida, Attilio Di Spiezio Sardo, Giuseppe Bifulco and Fulvio Zullo, Department of Neuroscience, Reproductive Sciences and Dentistry, School of Medicine, University of Naples Federico II, Naples, Italy Ignacio Herraiz and Cecilia Villalain, Department of Obstetrics and Gynaecology, Fetal Medicine Unit, Maternal and Child Health and Development Network, University Hospital 12 de Octubre, Complutense University of Madrid, Madrid, Spain María Jos´e Rodríguez Suárez, Hospital Universitario Central de Asturias, Asturias, Spain Zita Maria Gambacorti-Passerini, Department of Obstetrics and Gynaecology, Ciudad Real University General Hospital, Ciudad Real, Spain María de los Angeles Anaya Baz and Esther Vanessa Aguilar Galán, Department of Obstetrics and Gynaecology, Ciudad Real University General Hospital, Ciudad Real, Spain; University of Castilla-La Mancha, Ciudad Real, Spain Yolanda Cuñarro López, Juan Antonio De León Luis and Ignacio Cueto Hernández, Department of Obstetrics and Gynaecology, Fetal Medicine Unit, Maternal and Child Health and Development Network, Gregorio Marañón Hospital, Complutense University of Madrid, Madrid, Spain Roberta Venturella, Department of Obstetrics and Gynaecology, School of Medicine, Magna Graecia University of Catanzaro, Catanzaro, Italy Giuseppe Rizzo, University of Roma Tor Vergata, Division of Maternal Fetal Medicine, Ospedale Cristo Re Roma, Rome, Italy; Department of Obstetrics and Gynaecology, The First I.M. Sechenov Moscow State Medical University, Moscow, Russia Ilenia Mappa, University of Roma Tor Vergata, Division of Maternal Fetal Medicine, Ospedale Cristo Re Roma, Rome, Italy Giovanni Gerosolima, Department of Obstetrics and Gynaecology, Ospedale AOSG Moscati, Avellino, Italy Lars Hellmeyer, Josefine Königbauer and Giada Ameli, Department of Gynaecology and Obstetrics, Vivantes Klinikum im Friedrichshain, Berlin, Germany Tiziana Frusca, Nicola Volpe, Giovanni Battista Luca Schera and Stefania Fieni, Department of Obstetrics and Gynaecology, University of Parma, Parma, Italy Eutalia Esposito, Department of Obstetrics and Gynaecology, Ospedale di San Leonardo, Castellammare di Stabia, Italy Giuliana Simonazzi, Gaetana Di Donna, Aly Youssef and Anna Nunzia Della Gatta, Department of Obstetrics and Gynaecology, University of Bologna, Sant’Orsola- Malpighi University Hospital, Bologna, Italy Mariano Catello Di Donna, Vito Chiantera, Natalina Buono and Giulio Sozzi, Department of Gynaecologic Oncology, University of Palermo, Palermo, Sicilia, Italy Pantaleo Greco, Danila Morano, Beatrice Bianchi and Maria Giulia Lombana Marino, Department ofMedical Sciences, Section of Obstetrics and Gynaecology, Azienda Ospedaliera-Universitaria Sant’Anna, University of Ferrara, Ferrara, Italy Federica Laraud, Arianna Ramone, Angelo Cagnacci, Fabio Barra, Claudio Gustavino and Simone Ferrero, Academic Unit of Obstetrics and Gynaecology, IRCCS Ospedale Policlinico, San Martino, Genova, Italy Fabio Ghezzi, Antonella Cromi and Antonio Simone Laganà, Department of Obstetrics and Gynaecology, “Filippo Del Ponte” Hospita University of Insubria, Varese, Italy Valentina Laurita Longo, Department of Obstetrics and Gynaecology, Fondazione Policlinico Universitario A Gemelli IRCCS – Università Cattolica del Sacro Cuore, Rome, Italy; Istituto di Clinica Ostetrica e Ginecologica, Università Cattolica del Sacro Cuore, Rome, Italy; and Queen Margaret University, Institute for Global Health and Development, Edinburgh, UK Francesca Stollagli and Ludovica Puri, Istituto di Clinica Ostetrica e Ginecologica, Università Cattolica del Sacro Cuore, Rome, Italy Angelo Sirico and Giovanni Scambia, Department of Obstetrics and Gynaecology, Fondazione Policlinico Universitario A Gemelli IRCCS – Università Cattolica del Sacro Cuore, Rome, Italy Antonio Lanzone, Department of Obstetrics and Gynaecology, Fondazione Policlinico Universitario A Gemelli IRCCS – Università Cattolica del Sacro Cuore, Rome, Italy; Istituto di Clinica Ostetrica e Ginecologica, Università Cattolica del Sacro Cuore, Rome, Italy Lorenza Driul, Fabiana Cecchini D and Serena Xodo, Clinic of Obstetrics and Gynaecology, University of Udine, Udine, Italy Brian Rodriguez, Felipe Mercado-Olivares, Deena Elkafrawi and Giovanni Sisti, Department of Obstetrics and Gynaecology, New York Health and Hospitals/Lincoln Bronx, The Bronx, NY, USA Maddalena Morlando, Antonio Schiattarella, Nicola Colacurci and Pasquale De Franciscis, Department of Woman, Child and General and Specialized Surgery, University of Campania Luigi Vanvitelli, Naples, Italy Ilaria Cataneo, Marinella Lenzi and Fabrizio Sandri, Unit of Obstetrics and Gynaecology, Ospedale Maggiore, Bologna, Italy Riccardo Buscemi, Giorgia Gattei, Francesca della Sala and Maria Cristina Rovellotti, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy Eleonora Valori, Department of Translational Medicine, University of Eastern Piedmont, Novara, Italy; Hospital Castelli, Verbania, Italy Elisa Done, Gilles Faron and Leonardo Gucciardo, UZ Brussel, Universitair Ziekenhuis, Brussel, Belgium Valentina Esposito, University of Milan, Milan, Italy Luigi Nappi, Felice Sorrentino and Lorenzo Vasciaveo, Department of Obstetrics and Gynaecology, Department of Medical and Surgical Sciences, University of Foggia, Foggia, Italy.

Published
2021

40. Role of prenatal magnetic resonance imaging in fetuses with isolated anomalies of corpus callosum: multinational study

Author

Sileo F. G., Pilu G., Prayer D., Rizzo G., Khalil A., Managanaro L., Volpe P., Van Mieghem T., Bertucci E., Morales Rosello J., Facchinetti F., Di Mascio D., Stampalija T., Buca D., Tinari S., Oronzi L., Ercolani G., D'Amico A., Matarrelli B., Cerra C., Fantasia I., Pasquini L., Masini G., Olivieri C., Ghi T., Frusca T., Dall'Asta A., Visentin S., Cosmi E., D'Errico I., Villalain C., Quintero O. M., Giancotti A., D'Ambrosio V., Antonelli A., Caulo M., Panar V., De Santis M., Mappa I., Prefumo F., Pinelli L., Loscalzo G., Bracalente G., Liberati M., Filippi E., Trincia E., Pateisky P., Kiss H., Curado J., Almeida M., Santos A., Galindo A., D'Antonio F., Sileo F.G., Pilu G., Prayer D., Rizzo G., Khalil A., Managanaro L., Volpe P., Van Mieghem T., Bertucci E., Morales Rosello J., Facchinetti F., Di Mascio D., Stampalija T., Buca D., Tinari S., Oronzi L., Ercolani G., D'Amico A., Matarrelli B., Cerra C., Fantasia I., Pasquini L., Masini G., Olivieri C., Ghi T., Frusca T., Dall'Asta A., Visentin S., Cosmi E., D'Errico I., Villalain C., Quintero O.M., Giancotti A., D'Ambrosio V., Antonelli A., Caulo M., Panar V., De Santis M., Mappa I., Prefumo F., Pinelli L., Loscalzo G., Bracalente G., Liberati M., Filippi E., Trincia E., Pateisky P., Kiss H., Curado J., Almeida M., Santos A., Galindo A., D'Antonio F., Sileo, Fg, Pilu, G, Prayer, D, Rizzo, G, Khalil, A, Managanaro, L, Volpe, P, Van Mieghem, T, Bertucci, E, Rosello, Jm, Facchinetti, F, Di Mascio, D, Stampalija, T, Buca, D, Tinari, S, Oronzi, L, Ercolani, G, D'Amico, A, Matarrelli, B, Cerra, C, Fantasia, I, Pasquini, L, Masini, G, Olivieri, C, Ghi, T, Frusca, T, Dall'Asta, A, Visentin, S, Cosmi, E, D'Errico, I, Villalain, C, Quintero, Om, Giancotti, A, D'Ambrosio, V, Antonelli, A, Caulo, M, Panara, V, De Santis, M, Mappa, I, Prefumo, F, Pinelli, L, Loscalzo, G, Bracalente, G, Liberati, M, Filippi, E, Trincia, E, Pateisky, P, Kiss, H, Curado, J, Almeida, M, Santos, A, Galindo, A, and D'Antonio, F

Subjects
Fetal magnetic resonance imaging, Adult, Prenatal Diagnosi, medicine.medical_specialty, Logistic Model, Prenatal diagnosis, Gestational Age, Nervous System Malformations, Corpus callosum, Ultrasonography, Prenatal, Corpus Callosum, corpus callosum, Nervous System Malformation, Fetus, Pregnancy, Retrospective Studie, medicine, Humans, Radiology, Nuclear Medicine and imaging, Fetu, fetal magnetic resonance imaging, Agenesis of the corpus callosum, Retrospective Studies, prenatal diagnosis, Radiological and Ultrasound Technology, medicine.diagnostic_test, MRI, central nervous system, fetal ultrasound, neurosonography, business.industry, Ultrasound, Obstetrics and Gynecology, Magnetic resonance imaging, General Medicine, medicine.disease, Magnetic Resonance Imaging, Logistic Models, Reproductive Medicine, Settore MED/40, Female, Radiology, Agenesis of Corpus Callosum, business, Fetal medicine, Human
Abstract

Objective To assess the performance of fetal magnetic resonance imaging (MRI) in detecting associated anomalies in fetuses diagnosed with isolated corpus callosal (CC) anomaly on multiplanar ultrasound evaluation of the fetal brain (neurosonography). Methods This was a multicenter, retrospective cohort study involving 14 fetal medicine centers in Italy, UK, Portugal, Canada, Austria and Spain. Inclusion criteria were fetuses with an apparently isolated CC anomaly, defined as an anomaly of the CC and no other additional central nervous system (CNS) or extra-CNS abnormality detected on expert ultrasound, including multiplanar neurosonography; normal karyotype; maternal age >= 18 years; and gestational age at diagnosis >= 18 weeks. The primary outcome was the rate of additional CNS abnormalities detected exclusively on fetal MRI within 2 weeks following neurosonography. The secondary outcomes were the rate of additional abnormalities according to the type of CC abnormality (complete (cACC) or partial (pACC) agenesis of the CC) and the rate of additional anomalies detected only on postnatal imaging or at postmortem examination. Results A total of 269 fetuses with a sonographic prenatal diagnosis of apparently isolated CC anomalies (207 with cACC and 62 with pACC) were included in the analysis. Additional structural anomalies of the CNS were detected exclusively on prenatal MRI in 11.2% (30/269) of cases, with malformations of cortical development representing the most common type of anomaly. When stratifying the analysis according to the type of CC anomaly, the rate of associated anomalies detected exclusively on MRI was 11.6% (24/207) in cACC cases and 9.7% (6/62) in pACC cases. On multivariate logistic regression analysis, only maternal body mass index was associated independently with the likelihood of detecting associated anomalies on MRI (odds ratio, 1.07 (95% CI, 1.01-1.14); P = 0.03). Associated anomalies were detected exclusively after delivery and were missed on both types of prenatal imaging in 3.9% (8/205) of fetuses with prenatal diagnosis of isolated anomaly of the CC. Conclusion In fetuses with isolated anomaly of the CC diagnosed on antenatal neurosonography, MRI can identify a small proportion of additional anomalies, mainly malformations of cortical development, which are not detected on ultrasound. (c) 2021 International Society of Ultrasound in Obstetrics and Gynecology.

Published
2021

43. Combining x-ray real and reciprocal space mapping techniques to explore the epitaxial growth of semiconductors.

Author

Magalhães, S, Cabaço, J S, Concepción, O, Buca, D, Stachowicz, M, Oliveira, F, Cerqueira, M F, Lorenz, K, and Alves, E

Subjects
EPITAXY, LATTICE constants, SEMICONDUCTORS, TIN compounds, COMPOUND semiconductors
Abstract

In the present work, the importance of determining the strain states of semiconductor compounds with high accuracy is demonstrated. For the matter in question, new software titled LAPAs, the acronym for LAttice PArameters is presented. The lattice parameters as well as the chemical composition of Al1− x In x N and Ge1− x Sn x compounds grown on top of GaN- and Ge- buffered c-Al2O3 and (001) oriented Si substrates, respectively, are calculated via the real space Bond's method. The uncertainties in the lattice parameters and composition are derived, compared and discussed with the ones found via x-ray diffraction reciprocal space mapping. Broad peaks lead to increased centroid uncertainty and are found to constitute up to 99% of the total uncertainty in the lattice parameters. Refraction correction is included in the calculations and found to have an impact of 0.001 Å in the lattice parameters of both hexagonal and cubic crystallographic systems and below 0.01% in the quantification of the InN and Sn contents. Although the relaxation degrees of the nitride and tin compounds agree perfectly between the real and reciprocal-spaces methods, the uncertainty in the latter is found to be ten times higher. The impact of the findings may be substantial for the development of applications and devices as the intervals found for the lattice match the condition of Al1− x In x N grown on GaN templates vary between ∼1.8% (0.1675–0.1859) and 0.04% (0.1708–0.1712) if derived via the real- and reciprocal spaces methods. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
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47. High Sn-Content GeSn Light Emitters for Silicon Photonics

Author

Stange, D., primary, Schulte-Braucks, C., additional, von den Driesch, N., additional, Wirths, S., additional, Mussler, G., additional, Lenk, S., additional, Stoica, T., additional, Mantl, S., additional, Grützmacher, D., additional, Buca, D., additional, Geiger, R., additional, Zabel, T., additional, Sigg, H., additional, Hartmann, J. M., additional, and Ikonic, Z., additional

Published
2016
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48. Reproductive and pregnancy outcomes of fertility-sparing treatments for early-stage endometrial cancer or atypical hyperplasia: A systematic review and meta-analysis

Author

De Rocco, S., Buca, D., Oronzii, L., Petrillo, M., Fanfani, Francesco, Nappi, L., Liberati, M., D'Antonio, F., Scambia, Giovanni, Leombroni, M., Dessole, M., Lucidi, A., Fanfani F. (ORCID:0000-0003-1991-7284), Scambia G. (ORCID:0000-0003-2758-1063), De Rocco, S., Buca, D., Oronzii, L., Petrillo, M., Fanfani, Francesco, Nappi, L., Liberati, M., D'Antonio, F., Scambia, Giovanni, Leombroni, M., Dessole, M., Lucidi, A., Fanfani F. (ORCID:0000-0003-1991-7284), and Scambia G. (ORCID:0000-0003-2758-1063)

Abstract

Objective: To report the pregnancy outcomes of women with prior endometrial cancer and endometrial hyperplasia managed with fertility-sparing treatments. Methods: Medline and Embase databases were searched. Inclusion criteria were studies reporting the pregnancy outcomes of women who had undergone fertility-sparing treatments for endometrial hyperplasia or early endometrioid endometrial cancer. Outcomes explored were pregnancy, miscarriage and livebirth rates according to the type of progestin treatment used. Subgroup analyses according to the type of diagnostic follow-up were also performed. Meta-analyses of proportions using a random effects model were used to combine data. Results: Twenty-nine studies (1036 women) were included, and 82.8% [95% confidence interval (CI) 72.3–91.2] of women achieved complete remission. Pregnancy rates were 56.3% (95% CI 41.6–70.5) with megestrol (MA) or medroxyprogesterone acetate (MPA), 63.1% (95% CI 37.0–85.6) with levonorgestrel-releasing intrauterine device (LNG-IUD), 57.9% (95% CI 37.7–76.8) with MA or MPA and metformin, 59.8% (95% CI 48.3–70.7) with MPA and LNG-IUD, 15.4% (95% CI 4.3–42.2) with gonadotropin-releasing hormone analogue (GnRHa) combined with LNG-IUD or letrozole, and 40.7% (95% CI 24.5–59.3) with LNG-IUD and GnRHa. Miscarriage rates were 17.4% (95% CI 12.2–23.4), 14.3% (95% CI 6.4–24.7), 57.9% (95% CI 37.7–76.8), 26.9% (95% CI 14.6–39.3), 100% (95% CI 34.0–100) and 18.2% (95% CI 5.1–47.7), respectively, and livebirth rates were 68.8% (95% CI 56.0–80.3), 80.8% (95% CI 69.5–90.0), 69.9% (95% CI 56.1–82.0), 25.97 (95% CI 14.6–39.3), 0% (95% CI 0–66.0) and 81.8% (95% CI 52.3–94.8), respectively. Finally, stratifying the analysis considering the endometrial sampling method alone, the pregnancy rate was 68.6% (95% CI 51.2–83.6; 10 studies, I2 = 83.5%) in women who underwent hysteroscopy and 60.5% (95% CI 53.4–67.5; 13 studies, I2 = 39.8%) in women managed with dilatation and curettage biopsy; the miscarriage and livebi

Published
2022

49. Pre- and postnatal brain hemodynamics in pregnancies at term: correlation with Doppler ultrasound, birthweight, and adverse perinatal outcome

Author

Buca, D., Liberati, M., Rizzo, G., Gazzolo, D., Chiarelli, F., Giannini, C., Tizio, L. D., D'Adamo, E., Nappi, L., Scambia, G., D'Antonio, F., Scambia G. (ORCID:0000-0003-2758-1063), D'Antonio F., Buca, D., Liberati, M., Rizzo, G., Gazzolo, D., Chiarelli, F., Giannini, C., Tizio, L. D., D'Adamo, E., Nappi, L., Scambia, G., D'Antonio, F., Scambia G. (ORCID:0000-0003-2758-1063), and D'Antonio F.

Abstract

Purpose: To elucidate the correlation between pre- and postnatal cerebral Doppler in pregnancies close to term and to explore whether they are associated with perinatal outcome. Materials and methods: Prospective study on singleton pregnancies at 36–37 weeks of gestation. The primary outcome was a composite score of perinatal morbidity, while secondary outcomes were adverse intra-partum outcome and abnormal acid–base status. All pregnancies underwent ultrasound assessment of umbilical artery (UA), middle cerebral artery (MCA), uterine arteries (UtAs) pulsatility index (PI), and cerebroplacental ratio (CPR). At birth, neonatal MCA PI was measured 72 h from delivery and correlated with prenatal Doppler, primary and secondary outcomes. Fisher’s test and multivariate logistic regression analysis were used to analyze the data. Results: One hundred and sixty-six fetuses with both pre- and postnatal Doppler assessment of the MCA were included in the study. The risk of composite perinatal morbidity was higher in fetuses (OR: 5.7, 95% CI 2.2–14.6) and newborns (OR: 4.1, 95% CI 1.8–9.6) with fetal MCA PI < 10th centile. Likewise, the incidence of abnormal acid–base status was higher both in fetuses (20 versus 4.2%, p =.026) and newborns (17.1 versus 3.2%, p =.001) with a low MCA PI before and at birth, respectively. At logistic regression analysis, fetal and neonatal MCAPI were independently associated with composite perinatal morbidity and abnormal acid–base status, but not with adverse intra-partum outcome. In small for gestational age (SGA) fetuses, the incidence of composite perinatal morbidity was higher in fetuses and new-borns presenting compared to those not presenting with an MCA PI < 10th centile (61.5 versus 20%, p =.003 and 52.6% versus 7.1%, p =.008, respectively), while such association was lost when considering non-SGA fetuses. Conclusion: A low MCA PI is associated with adverse perinatal outcome in pregnancies at term and tends to persist after birt

Published
2022

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