EP-1115: Linac vs viewray in brain metastases: a dosimetric comparison of hypofractionated IMRT and VMAT
نویسندگان
چکیده
منابع مشابه
SU-E-T-593: VMAT Vs. IMRT for Treatment of Neoplasms of the Brain: Dosimetric Quality and Delivery.
PURPOSE A retrospective study was performed to determine any dosimetric or delivery benefits for treatment planning with intensity-modulated radiotherapy (IMRT) versus volumetric-modulated arc therapy (VMAT) for the treatment of brain neoplasms. METHODS Eighteen patients treated with modulated brain radiotherapy treatments were included in this study (primary treatment volumes of 15.3 to 374....
متن کاملDosimetric comparison between IMRT and VMAT in irradiation for peripheral and central lung cancer
The aim of the present study was to compare intensity-modulated radiation therapy (IMRT) and volumetric modulated arc therapy (VMAT) in irradiation of lung cancer. Plans of 14 patients were compared. The results demonstrated that in peripheral lung cancer, V5 (%) of the lung in partial-arc (PA)-VMAT was decreased compared with IMRT, single-arc (SA)-, and double partial-arc (2PA)-VMAT. V30 (%) o...
متن کاملDosimetric and radiobiological comparison for quality assurance of IMRT and VMAT plans
INTRODUCTION The gamma analysis used for quality assurance of a complex radiotherapy plan examines the dosimetric equivalence between planned and measured dose distributions within some tolerance. This study explores whether the dosimetric difference is correlated with any radiobiological difference between delivered and planned dose. METHODS VMAT or IMRT plans optimized for 14 cancer patient...
متن کاملSU-E-T-584: Dosimetric Comparison Between Static IMRT and VMAT for a Four- Lesion Brain Treatment.
PURPOSE Sparing brain volume is the goal when designing plans for multiple brain tumors. We compared dose distributions for tumor and normal tissues using VAMT and static IMRT. METHODS A patient presented with recurrent meningioma with 4 lesions identified. The greatest dimensions for the tumors were 0.4 to 2.0 cm. The tumor sizes and locations can be treated with a single plan with 1.8 Gy/fr...
متن کاملDVH- and NTCP-based dosimetric comparison of different longitudinal margins for VMAT-IMRT of esophageal cancer
PURPOSE To cover the microscopic tumor spread in squamous cell carcinoma of the esophagus (SCC), longitudinal margins of 3-4 cm are used for radiotherapy (RT) protocols. However, smaller margins of 2-3 cm might be reasonable when advanced diagnostic imaging is integrated into target volume delineation. Purpose of this study was to compare the dose distribution and deposition to the organs at ri...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2017
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(17)31551-7