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108 results on '"Belli, G"'

2. Surgeon eye lens dose monitoring in interventional neuroradiology, cardiovascular and radiology procedures.

Author

Busoni, S., Bruzzi, M., Giomi, S., Poggiali, C., Quattrocchi, M., Betti, M., D'Urso, D., Fedeli, L., Mazzoni, L.N., Paolucci, M., Rossi, F., Taddeucci, A., Bettarini, S., Tortoli, P., Belli, G., Bernardi, L., Gasperi, C., and Campanella, F.

Abstract

• Surgeon eye lens dose measured in eight different interventional procedure types. • Dosemeters read by an iSO-17025 accredited service. • Median eye lens H p (3) range, with ceiling shield: 20–60 μSv per single procedure. • CT-guided lung biopsy median eye lens H p (3): 150μSv per single procedure. • H p (3)/KAP shows a statistically significant dependency on the surgeon's height. This study investigated the radiation dose to surgeon eye lens for single procedure and normalised to exposure parameters for eight selected neuroradiology, cardiovascular and radiology interventional procedures. The procedures investigated were diagnostic study, Arteriovenous Malformations treatment (AVM) and aneurysm embolization for neuroradiology procedures, Coronary Angiography and Percutaneous Transluminal Coronary Angioplasty (CA-PTCA), Pacemaker and Implantable Cardioverter-Defibrillator implantation (PM-ICD), Endovascular Aortic Repair (EVAR) and Fenestrated Endovascular Aortic Repair (FEVAR) for cardiovascular and electrophysiology procedures. CT-guided lung biopsy was also monitored. All procedures were performed with table-mounted and ceiling-suspended shields (0.5 mm lead equivalent thickness), except for FEVAR and PM-ICD where only a table mounted shield was present, and CT-guided lung biopsy where no shield was used. Dose assessment was performed using a dosemeter positioned close to the most exposed eye of the surgeon, outside the protective eyewear. The surgeon most exposed eye lens median H p (3) equivalent dose for a single procedure, without protective eyewear contribution, was 18 μSv for neuroradiology diagnostic study, 62 μSv for AVM, 38 μSv for aneurysm embolization, 33 μSv for CA-PTCA, 39 μSv for PM-ICD, 49 μSv for EVAR, 2500 μSv for FEVAR, 153 μSv for CT-guided lung biopsy. In interventional procedures, the 20 mSv/year dose limit for surgeon eye lens exposure might be exceeded if shields or protective eyewear are not used. Surgeon eye lens doses, normalised to single procedures and to exposure parameters, are a valuable tool for determining appropriate radiation protection measures and dedicated eye lens dosemeter assignment. [ABSTRACT FROM AUTHOR]

Published
2022
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3. A configurable tracking algorithm to detect cosmic muon tracks for the CMS-RPC based technical trigger

Author

Rajan, R.T., Colaleo, A., Loddo, F., Maggi, M., Ranieri, A., Abbrescia, M., Guida, R., Iaselli, G., Nuzzo, S., Pugliese, G., Roselli, G., Trentadue, R., Tupputi, S., Benussi, L., Bertani, M., Bianco, S., Fabbri, F., Cavallo, N., Cimmino, A., Lomidze, D., Noli, P., Paolucci, P., Piccolo, D., Polese, G., Sciacca, C., Baesso, P., Belli, G., Necchi, M., Ratti, S.P., Pagano, D., Vitulo, P., Viviani, C., Dimitrov, A., Litov, L., Pavlov, B., Petkov, P., Genchev, V., Iaydjiev, P., Bunkowski, K., Kierzkowski, K., Konecki, M., Kudla, I., Pietrusinski, M., and Pozniak, K.

Published
2009
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4. The compact muon solenoid RPC barrel detector

Author

Colaleo, A., Loddo, F., Maggi, M., Ranieri, A., Abbrescia, M., Guida, R., Iaselli, G., Marangelli, B., Natali, S., Nuzzo, S., Pugliese, G., Romano, F., Roselli, G., Trentadue, R., Tupputi, S., Lacalamita, N., Chiumarulo, F., Pinto, C., Franco, M., Abadjjev, A.K., Papagni, M., Clemente, A., Benussi, L., Bianco, S., Colonna, D., Fabbri, F.L., Giardoni, M., Ortenzi, B., Paris, C., Passamonti, L., Pierluigi, D., Ponzio, B., Pucci, C., Russo, A., Cassese, F., Cavallo, N., Cimmino, A., Lomidze, D., Noli, P., Paolucci, P., Passeggio, G., Piccolo, D., Polese, G., Roscilli, L., Sciacca, C., Vanzanella, A., Baesso, P., Belli, G., Bricola, S., Grelli, A., Imbres, E., Musitelli, G., Nardò, R., Necchi, M., Ratti, S.P., Riccardi, C., Pagano, D., Torre, P., Vicini, A., Vitulo, P., Viviani, C., Dimitrov, A., Litov, L., Pavlov, B., Petkov, P., Anguelov, T., Genchev, V., Iaydjiev, P., Panev, B., Stoykova, S., Sultanov, G., and Trayanov, R.

Published
2009
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5. The gas monitoring system for the Resistive Plate Chamber detector of the CMS experiment at LHC

Author

Abbrescia, M., Colaleo, A., Guida, R., Iaselli, G., Loddo, F., Maggi, M., Marangelli, B., Natali, S., Nuzzo, S., Pugliese, G., Ranieri, A., Romano, F., Roselli, G., Trentadue, R., Tupputi, S., Benussi, L., Bertrani, M., Caponero, M., Colonna, D., Donisi, D., Fabbri, F., Felli, F., Giardoni, M., Pallotta, M., Paolozzi, A., Passamonti, M., Pucci, C., Saviano, G., Polese, G., Fabozzi, F., Cimmino, A., Paolucci, P., Piccolo, D., Noli, P., Belli, G., Grelli, A., Necchi, M., Ratti, S., Riccardi, C., Torre, P., Vitulo, P., Genchev, V., Iaydjiev, P., Stoykova, S., Sultanov, G., Trayanov, R., Dimitrov, A., Litov, L., Pavlov, B., and Petkov, P.

Published
2008
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6. Results about HF production and bakelite analysis for the CMS Resistive Plate Chambers

Author

Abbrescia, M., Colaleo, A., Guida, R., Iaselli, G., Loddo, F., Maggi, M., Marangelli, B., Natali, S., Nuzzo, S., Pugliese, G., Ranieri, A., Romano, F., Roselli, G., Trentadue, R., Tupputi, S., Cavallo, N., Fabozzi, F., Paolucci, P., Piccolo, D., Polese, G., Sciacca, C., Belli, G., Necchi, M., Ratti, S., Riccardi, C., Torre, P., Vitulo, P., Anguelov, T., Genchev, V., Panev, B., Piperov, S., Sultanov, G., Vankov, P., Dimitrov, A., Litov, L., Pavlov, B., and Petkov, P.

Published
2008
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7. Quality control tests for the CMS Barrel RPCs

Author

Abbrescia, M., Colaleo, A., Guida, R., Iaselli, G., Loddo, F., Maggi, M., Marangelli, B., Natali, S., Nuzzo, S., Pugliese, G., Ranieri, A., Romano, F., Trentadue, R., Cavallo, N., Fabozzi, F., Paolucci, P., Piccolo, D., Polese, G., Sciacca, C., Belli, G., Necchi, M., Ratti, S.P., Riccardi, C., Torre, P., Vitulo, P., Anguelov, T., Genchev, V., Panev, B., Piperov, S., Sultanov, G., Vankov, P., Dimitrov, A., Litov, L., Pavlov, B., and Petkov, P.

Published
2006
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8. RPCs in biomedical applications

Author

Belli, G., De Vecchi, C., Giroletti, E., Guida, R., Musitelli, G., Nardò, R., Necchi, M.M., Pagano, D., Ratti, S.P., Sani, G., Vicini, A., Vitulo, P., and Viviani, C.

Published
2006
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9. HF production in CMS-Resistive Plate Chambers

Author

Abbrescia, M., Colaleo, A., Guida, R., Iaselli, G., Loddo, F., Maggi, M., Marangelli, B., Natali, S., Nuzzo, S., Pugliese, G., Ranieri, A., Romano, F., Trentadue, R., Cavallo, N., Fabozzi, F., Paolucci, P., Piccolo, D., Polese, G., Sciacca, C., Belli, G., Necchi, M., Ratti, S., Riccardi, C., Torre, P., Vitulo, P., Anguelov, T., Genchev, V., Panev, B., Piperov, S., Sultanov, G., Vankov, P., Litov, L., Pavlov, B., and Petkov, P.

Published
2006
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10. Production and quality control of the Barrel RPC chambers of the CMS experiment

Author

Abbrescia, M., Cavallo, E., Colaleo, A., Iaselli, G., Loddo, F., Maggi, M., Marangelli, B., Natali, S., Nuzzo, S., Pulgliese, G., Ranieri, A., Romano, F., Trentadue, R., Cavallo, N., Comunale, G., Fabozzi, F., Paolucci, P., Piccolo, D., Sciacca, C., Belli, G., De Vecchi, C., Guida, R., Ratti, S.P., Riccardi, G., Torre, P., Vitulo, P., Ban, Young, Liu, Hong Tao, Quian, Si-Jin, Ye, Yan-Lin, Ying, Jun, Anguelov, T., Guenchev, V., Panev, B., Piperov, S., Sultanov, G., Vankov, P., Dimitrov, A., Glushkov, I., Litov, L., Nasteva, I., Pavlov, B., and Petkov, P.

Published
2006
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11. Cosmic ray tests of double-gap resistive plate chambers for the CMS experiment

Author

Abbrescia, M., Cavallo, E., Colaleo, A., Iaselli, G., Loddo, F., Maggi, M., Marangelli, B., Natali, S., Nuzzo, S., Pugliese, G., Ranieri, A., Romano, F., Trentadue, R., Cavallo, N., Comunale, G., Paolucci, P., Piccolo, D., Sciacca, C., Belli, G., De vecchi, C., Guida, R., Ratti, S.P., Riccardi, C., Torre, P., Vitulo, P., Ban, Y., Cai, J., Liu, H., Qian, S., Wang, Q., Ye, Y., Ying, J., Dimitrov, A., Glushkov, I., Litov, L., Nasteva, I., Pavlov, B., Petkov, P., Anguelov, T., Genchev, V., Iaydjiev, P., Panev, B., Stoykova, S., Sultanov, G., Trayanov, R., and Vankov, P.

Published
2005
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12. The cosmics rays quality test procedure for the CMS barrel resistive plate chambers

Author

Abbrescia, M., Cavallo, E., Colaleo, A., Iaselli, G., Loddo, F., Maggi, M., Marangelli, B., Memoli, V., Natali, S., Nuzzo, S., Pugliese, G., Ranieri, A., Romano, F., Trentadue, R., Cavallo, N., Comunale, G., Fabozzi, F., Paolucci, P., Piccolo, D., Sciacca, C., Belli, G., De Vecchi, C., Guida, R., Ratti, S.P., Riccardi, G., Torre, P., Vitulo, P., Anguelov, T., Genchev, V., Panev, B., Piperov, S., Sultanov, G., Vankov, P., Dimitrov, A., Glushkov, I., Litov, L., Nasteva, I., Pavlov, B., Petkov, P., Ban, Y., Liu, H.T., Qian, S.J., Ye, Y.L., and Ying, J.

Published
2004
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13. Study of long-term performance of CMS RPC under irradiation at the CERN GIF

Author

Abbrescia, M., Cavallo, E., Colaleo, A., Iaselli, G., Loddo, F., Maggi, M., Marangelli, B., Natali, S., Nuzzo, S., Pugliese, G., Ranieri, A., Romano, F., Trentadue, R., Cavallo, N., Comunale, G., Fabozzi, F., Paolucci, P., Piccolo, D., Sciacca, C., Belli, G., De Vecchi, C., Guida, R., Ratti, S.P., Riccardi, G., Torre, P., Vitulo, P., Dimitrov, A., Pavlov, B., Petkov, P., and Vankov, P.

Published
2004
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14. Production and test of one-third of barrel Resistive Plate Chambers of the CMS experiment at LHC

Author

Abbrescia, M., Cavallo, E., Colaleo, A., Iaselli, G., Loddo, F., Maggi, M., Marangelli, B., Natali, S., Nuzzo, S., Pugliese, G., Ranieri, A., Romano, F., Trentadue, R., Cavallo, N., Comunale, G., Fabozzi, F., Paolucci, P., Piccolo, D., Sciacca, C., Belli, G., De vecchi, C., Guida, R., Ratti, S.P., Riccardi, C., Torre, P., Vitulo, P., Yong, Ban, Hong-Tao, Liu, Si-Jin, Qian, Yan-Lin, Ye, Jun, Ying, Anguelov, T., Guenchev, V., Panev, B., Piperov, S., Sultanov, G., Vankov, P., Dimitrov, A., Glushkov, I., Litov, L., Nasteva, I., Pavlov, B., and Petkov, P.

Published
2004
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16. The RPC system for the CMS experiment at the LHC

Author

Abbrescia, M., Colaleo, A., Iaselli, G., Loddo, F., Maggi, M., Marangelli, B., Natali, S., Nuzzo, S., Pugliese, G., Ranieri, A., Romano, F., Altieri, S., Belli, G., Bruno, G., Guida, R., Ratti, S.P., Riccardi, C., Torre, P., and Vitulo, P.

Published
2003
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18. Experimental results on RPC neutron sensitivity

Author

Abbrescia, M., Altieri, S., Baratti, V., Barnabà, O., Belli, G., Bruno, G., Colaleo, A., De Vecchi, C., Guida, R., Iaselli, G., Imbres, E., Loddo, F., Maggi, M., Marangelli, B., Musitelli, G., Nardò, R., Natali, S., Nuzzo, S., Pugliese, G., Ranieri, A., Ratti, S., Riccardi, C., Romano, F., Torre, P., Vicini, A., and Vitulo, P.

Published
2003
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24. Addressing the efficiency of X-ray protective eyewear: Proposal for the introduction of a new comprehensive parameter, the Eye Protection Effectiveness (EPE).

Author

Doria, S., Fedeli, L., Redapi, L., Piffer, S., Rossi, F., Falivene, A., Busoni, S., Belli, G., Gori, C., and Taddeucci, A.

Abstract

• Characterization of eye lens X-ray protection efficacy of different eyewear models. • Study of the influence of eyewear shape and ergonomics. • Combination of dosimetric measurements and geometrical modeling. • Introduction of the concept of Eye Protection Effectiveness, an "a priori" evaluation of the Dose Reduction Factor. Radioprotection of the eye lens of medical staff involved in Surgical procedures is a subject of international debates since ICRP recommended, on 2011, a lower equivalent dose limit for the lens of the eye. In this work we address the effectiveness of different models of X-ray protective eyewear by relating actual dosimetry measurements to an ad hoc developed mathematical model, in order to disentangle the contribution of geometrical factors and shield capabilities. Phantom irradiation was carried out in fixed exposure conditions in angiographic room: we found that measured Dose Reduction Factors (DRF) strongly depend on the ergonomics of the investigated eyewear. Actually a very poor DRF was observed in the case of a glass model in spite of its high nominal attenuation, whereas a protective tool with low shielding capabilities such a visor resulted much more effective as a consequence of is shape (i.e. extended geometric protection of the eye lens). Our work highlights the need of the introduction of a specific parameter to quantify the effectiveness of the protection tools and able to predict their DRF by taking into account the geometry of the clinical condition of exposure. Aiming at making steps forward the standardization of the guidelines concerning the features of eye protective tools, we developed a simple mathematical model describing the eye lens irradiation geometry which allows the introduction, for each eyewear, of a comprehensive parameter, the Eye Protection Effectiveness (EPE), that, for any defined clinical irradiation condition and glass shielding capabilities and shape, defines the overall effective X-ray protection of the eyewear. [ABSTRACT FROM AUTHOR]

Published
2020
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45. P170 - Multicenter comparison of MR scanners for quantitative diffusion weighted imaging: apparent diffusion coefficient dependence on acquisition plan and spatial position – preliminary results.

Author

Fedeli, L., Belli, G., Ciccarone, A., Coniglio, A., Esposito, M., Giannelli, M., Sghedoni, R., Tarducci, R., Altabella, L., Belligotti, E., Benelli, M., Bernardi, L., Betti, M., Caivano, R., Carni, M., Chiappiniello, A., Cimolai, S., Cretti, F., Fulcheri, C., and Gasperi, C.

Published
2021
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48. Ultrasonically activated device for parenchymal division during open hepatectomy.

Author

Belli, G., Limongelli, P., Belli, A., Fantini, C., D'Agostino, A., Cioffi, L., and Russo, G.

Subjects
*HEPATECTOMY, *LIVER surgery, *SURGICAL excision, *CIRRHOSIS of the liver, *ULTRASONIC imaging
Abstract

Background.. The use of new technological devices has gained popularity and has been proposed to improve the safety of liver resection. This study was designed to evaluate the usefulness of the ultrasonically activated device (USAD) during open liver resection. Materials and methods. Indication for surgery, type of resection, need to perform a Pringle manoeuvre, operation time, blood loss, number of blood transfusions, morbidity and mortality rate were analyzed in 60 patients undergoing a formal open liver resection by means of USAD. Results. The overall mean operation time was 172 minutes (range 120-255 min); an intermittent warm ischemia was applied in 9 cases (15%). The overall mean blood loss was 410 mL (median 400 mL, range 50-950 ml). A median of one blood transfusion was administered in six patients (10%). The mean hospital stay was 10.2 days (median 11, range 8-16). The overall morbidity rate was 20% (12 out of 60 patients). No in-hospital mortality was recorded. By subdividing the patients according to the presence or absence of cirrhosis no statistical significant differences were found between the two subgroups in all peri-and postoperative outcomes. Conclusions. In conclusion, though there is a lack of data based on well conducted controlled studies and further on a greater number of patients are needed, the utilization of USAD may help to minimize blood loss during liver resection regardless of the condition of the liver, even in case of cirrhosis. [ABSTRACT FROM AUTHOR]

Published
2008
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49. 236. Temporal stability of MRI: A simple QA for advanced techniques.

Author

Piffer, S., Fedeli, L., Busoni, S., Gori, C., and Belli, G.

Abstract

Purpose MRI scanner performance temporal stability is fundamental aspect in several multi-parametric exams (like diffusion, functional and spectroscopy) effect of order of few percent may be clinically relevant. Revised version of Friedman protocol (JMRI, 23 -2006) was adopted to check stability of scanners over time on weekly basis. Linewidth of water peak in MR spectroscopy after optimization is considered as well. Results over a long period survey of several clinical scanners are reported. Methods The purpose of the procedure is to measure time stability of the scanners in conditions that are as similar as possible to the clinical settings. The head coil and scanning sequence used clinically were tested. A time series of 200 images of QA vendor phantom is collected. The automated analysis provides information about signal intensity, uniformity, magnitude spectrum, radius of decorrelation (RdC), short term reproducibility, SNR and signal fluctuation to noise ratio. RdC represents the size of ROI for which the main source of signal noise is systematic and not statistic. With same setup, linewidth after B 0 homogeneity optimisation is measured. Data were acquired on four 1.5 T MRI clinical scanners, on a 4 years time interval. Results Data fluctuations of considered parameters are of order of few percent (varying between 1% and 9%), significant variations have been observer after component change and software upgrade. Fourier analysis of short term signal doesn't show periodic noise. Short term reproducibility is below 1% for all considered scanners. RdC is 18 pixels for two scanners and 6 pixels for other. No significant variation have been observed during temporal series. Linewidth is stable within 6%. Conclusions Regular check of parameter stability provides strong feedback regarding scanner performances, and may allow to predict possible malfunctioning. Proposed protocol may be used as basic QA in advanced MRI technique. [ABSTRACT FROM AUTHOR]

Published
2018
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50. 95. Pre and Post-Operative Radiation Protection in Ru-106 Opthalmic Brachytherapy.

Author

Rossi, F., Belli, G., Fedeli, L., Gori, C., Genovese, E., Cannatà, V., and Busoni, S.

Abstract

Purpose The use of 106Ru plaque was introduced for choroidal melanomas therapy. The aim of this study is workers and public exposure evaluation, in pre and post-operative phase of the treated patient. In particular attenuation properties of selected shielding materials and exposure levels around patient head and transport/sterilisation safety containers are reported. Methods Exposure was measured around the head of five patients, in multiple positions at various distances from the skin. Dose rates around the transport/sterilisation container were also measured. Attenuation measurements were performed simulating the eye with a 25mm diameter plastic sphere, filled with water and the plaque attached on it. All measurements were performed with a calibrated instrumentations. Selected materials attenuation properties were measured in "narrow" beam mode (IEC 61331-1:2014). A custom code was developed to perform numerical simulation of BS spectrum. Results In Table HVLs and TVLs for selected materials and the average exposure levels (±SD) measured around patients are reported. Five positions around the head, at 10 cm distance from the skin were considered, plus two positions at 1m. Exposure levels around the transport container are nearly constant for any given direction; average values is 1.6 μSv/h/MBq at contact and 0.013 μSv/h/MBq at 1 m. Conclusions Considering typical activity of the implanted plaques, and conservative recovery and assistance times, up to 60 patients may be treated in a year, without exceeding 1mSv/y for post-operative activities. For the same number of patients, even considering a 8 hours/day standing at 1.5 m from the patient bed, the worker received dose is around 0.65 mSv/y. Attenuation properties for selected materials were measured and agree with simulated results. Main contribution to exposure comes from X- γ radiation, BS is almost negligible from radiation protection point of view. [ABSTRACT FROM AUTHOR]

Published
2018
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