Results 151 to 160 of about 12,318 (173)
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Quantitative dosimetric verification of an IMRT planning and delivery system
Radiotherapy and Oncology, 1998The accuracy of dose calculation and delivery of a commercial serial tomotherapy treatment planning and delivery system (Peacock. NOMOS Corporation) was experimentally determined.External beam fluence distributions were optimized and delivered to test treatment plan target volumes, including three with cylindrical targets with diameters ranging from 2 ...
D A, Low +6 more
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Monte Carlo simulation and dosimetric verification of radiotherapy beam modifiers
Physics in Medicine and Biology, 2001Monte Carlo simulation of beam modifiers such as physical wedges and compensating filters has been performed with a rectilinear voxel geometry module. A modified version of the EGS4/DOSXYZ code has been developed for this purpose. The new implementations have been validated against the BEAM Monte Carlo code using its standard component modules (CMs) in
E, Spezi, D G, Lewis, C W, Smith
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Dosimetric pre-treatment verification of IMRT using an EPID; clinical experience
Radiotherapy and Oncology, 2006In our clinic a QA program for IMRT verification, fully based on dosimetric measurements with electronic portal imaging devices (EPID), has been running for over 3 years. The program includes a pre-treatment dosimetric check of all IMRT fields. During a complete treatment simulation at the linac, a portal dose image (PDI) is acquired with the EPID for ...
Zijtveld, Mathilda +3 more
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Camera based EPID dosimetric verification of radiation treatments
2018Introduction: Tumor control and treatment quality depend on accuracy of delivered dose. Various methods have been studied for treatment dosimetry verification. Among these methods, the use of electronic portal imaging device (EPID) is highly considered. Many efforts are underway to improve the results of this context.
Nazari, Vahideh +5 more
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[Dosimetric verification of the intensity modulated radiation therapy].
Zhongguo yi liao qi xie za zhi = Chinese journal of medical instrumentation, 2012To research the method of dosimetric verification of the intensity modulated radiation therapy (IMRT).The IMRT treatment plans were designed by Eclipse TPS and were implemented in Varian ClinacIX LA with 6MV X-ray. The absolute point doses were measured using a PTW 0.6 cc ion chamber with UNIDOS E dosimeter and the planes dose distributions were ...
Yuhai, Zhang, Yang, Gao
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Dosimetric verification of compensated beams using radiographic films
2009Intracavitary application of brachytherapy sources followed by external beam radiation is common practice in radiotherapy of carcinoma of the cervix. Since brachytherapy sources deliver very high doses to the central portion of the target volume this part must be shielded while irradiate with photon beams.
Žauhar, Gordana +4 more
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1374 poster IMRT DOSIMETRIC VERIFICATION PROCEDURE
Radiotherapy and Oncology, 2011S. Pellejero +9 more
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399 Dosimetric verification with portal imaging
Radiotherapy and Oncology, 2005E. Whlin, B. Sorcini, S. Axelsson
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Dosimetric accuracy of Kodak EDR2 film for IMRT verifications.
Medical physics, 2005Patient-specific intensity-modulated radiotherapy (IMRT) verifications require an accurate two-dimensional dosimeter that is not labor-intensive. We assessed the precision and reproducibility of film calibrations over time, measured the elemental composition of the film, measured the intermittency effect, and measured the dosimetric accuracy and ...
Nathan L, Childress +5 more
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