Search

Your search keyword '"M Buleteanu"' showing total 5 results
Start Over Author "M Buleteanu" Publication Year Range Last 50 years
5 results on '"M Buleteanu"'

2. Feasibility of using the novel Sbrt System for radiation therapy and Srs of intracranial lesions

Author

M Buleteanu, Dirk Verellen, M. De Ridder, Thomas Gevaert, Tom Depuydt, Kenneth Poels, Medical Imaging and Physical Sciences, Translational Radiation Oncology and Physics, Clinical sciences, and Radiation Therapy

Subjects
Radiation therapy, Cancer Research, Radiation, Oncology, business.industry, medicine.medical_treatment, medicine, Intracranial lesions, Radiology, Nuclear Medicine and imaging, Nuclear medicine, business
Published
2012

3. OC-0500: A comparison of two clinical correlation models for dynamic tumor tracking with a focus on geometrical accuracy

Author

Kenneth Poels, M Buleteanu, J. Dhont, Dirk Verellen, T. Lacornerie, M. De Ridder, Benedikt Engels, Thierry Gevaert, T. Depuydt, and Christine Collen

Subjects
Oncology, business.industry, Tumor tracking, Medicine, Radiology, Nuclear Medicine and imaging, Computer vision, Hematology, Artificial intelligence, Clinical correlation, business, Focus (optics)
Published
2014
Full Text
View/download PDF

4. SU-E-J-166: Combining Dynamic Wave Arc and Tangential Arc for Breast Boost Irradiation with the Vero System

Author

Dirk Verellen, Kenneth Poels, Michael Duchateau, H. Van Parijs, Viorica Simon, Mark De Ridder, M Buleteanu, T Reynders, T. Depuydt, and Thierry Gevaert

Subjects
Physics, medicine.medical_specialty, Breast boost, business.industry, Low dose, General Medicine, Linear particle accelerator, Surgery, Conformity index, Arc (geometry), medicine, Irradiation, Radiation treatment planning, Previously treated, Nuclear medicine, business
Abstract

Purpose: To present two novel treatment planning techniques developed for breast boost irradiation on the Vero system and investigate possible dosimetric advantages. Methods: The Vero system consists of a 6MV LINAC mounted on an O‐ring gantry that rotates around the patients by +/− 185°. Unlike C‐arm gantries it can also rotate around the vertical axis (+/− 60°). A preliminary version iPlan RT (Brainlab AG, Feldkirchen, Germany) was used to plan, optimize and investigate two arc‐based approaches. The Dynamic Wave Arc (DWA) combines simultaneously gantry and ring rotation, offering additional range of treatment orientation without involving patient/couch motion. The Tangential Arc (TGA), static gantry position with continuous ring rotation makes the most of the tangential benefits within the non‐coplanar delivery. Ten patients previously treated for breast boost (7–10 non‐coplanar static beams on Vero) were selected for breast boost comparison. All patients were replanned using two TGA combined with a DWA to achieve a sculpted dose around the thorax wall. The dosimetric parameters were calculated to evaluate the plan quality. Results: The combination of 2TGA and DWA proved to be a feasible technique for breast boost irradiation. In contrast with 3D‐CRT, it presented a better low dose reduction for the V5% and V15% ipsilateral lung. For the left side localizations, the TGA&DWA significantly reduced the heart doses (0.19+/− 0.5 vs. 8.4+/−17.73), the V5% being outside the heart in all cases. A better conformity index was also achieved (0.74 +/−0.03 for TGA&DWA versus 0.67 +/−0.04 for 3D‐CRT). The mean total number of Monitor Units was comparable for both planning approaches. Conclusion: TGA and DWA are two promising techniques that highlight the advantages of the unique design of the Vero system. Combining TGA&DWA already presented good results for breast boost. The dosimetric and clinical gains are to be further investigated for other sites. M. Buleteanu is a PhD student financially supported by Brainlab AG (Feldkirchen, Germany) during the entire period of the doctoral thesis. The other authors have no conflict of interest.

Published
2013
Full Text
View/download PDF

5. Treating patients with real-time tumor tracking using the Vero gimbaled linac system: implementation and first review.

Author

Depuydt T, Poels K, Verellen D, Engels B, Collen C, Buleteanu M, Van den Begin R, Boussaer M, Duchateau M, Gevaert T, Storme G, and De Ridder M

Subjects
Carcinoma, Non-Small-Cell Lung diagnosis, Female, Fiducial Markers, Four-Dimensional Computed Tomography methods, Humans, Liver diagnostic imaging, Liver pathology, Liver Neoplasms diagnosis, Lung diagnostic imaging, Lung pathology, Lung Neoplasms diagnosis, Magnetic Resonance Imaging methods, Male, Middle Aged, Organs at Risk diagnostic imaging, Organs at Risk pathology, Positron-Emission Tomography methods, Reproducibility of Results, Carcinoma, Non-Small-Cell Lung surgery, Liver Neoplasms surgery, Lung Neoplasms surgery, Multimodal Imaging methods, Radiosurgery methods, Radiotherapy Planning, Computer-Assisted methods
Abstract

Purpose: To report on the first clinical application of a real-time tumor tracking (RTTT) solution based on the Vero SBRT gimbaled linac system for treatment of moving tumors., Methods and Materials: A first group of 10 SBRT patients diagnosed with NSCLC or oligometastatic disease in lung or liver was treated with the RTTT technique. The PTV volumes and OAR exposure were benchmarked against the widely used ITV approach. Based on data acquired during execution of RTTT treatments, a first review was performed of the process., Results: The 35% PTV volume reduction with RTTT of the studied single lesions SBRT irradiations of small target volumes is expected to result in a small (<1%) reduction of lung or liver NTCP. A GTV-PTV margin of 5.0mm was applied for treatment planning of RTTT. From patient data on residual geometric uncertainties, a CTV-PTV margin of 3.2mm was calculated. Reduction of the GTV-PTV margin below 5.0mm without better understanding of biological definition of tumor boundaries was discouraged. Total treatment times were reduced to 34.4 min on average., Conclusion: A considerable PTV volume reduction was achieved applying RTTT and time efficiency for respiratory correlated SBRT was reestablished with Vero RTTT., (Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.)

Published
2014
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results