Evaluation of patient organ doses from kilovoltage cone-beam CT imaging in radiation therapy
نویسندگان
چکیده
منابع مشابه
Patient dose from kilovoltage cone beam computed tomography imaging in radiation therapy.
Kilovoltage cone-beam computerized tomography (kV-CBCT) systems integrated into the gantry of linear accelerators can be used to acquire high-resolution volumetric images of the patient in the treatment position. Using on-line software and hardware, patient position can be determined accurately with a high degree of precision and, subsequently, set-up parameters can be adjusted to deliver the i...
متن کاملThe Impact of Residual Geometric Inaccuracies on Normal Organ Doses in Image Guided-Radiation Therapy of Prostate Cancer Using On-Board Kilovoltage Cone-Beam Computed Tomography
Introduction: The aim of this retrospective study was to evaluate the variations in delivered dose to the bladder, rectum, and femoral heads of prostate cancer patients during a course of treatment by image-guided radiation therapy (IGRT). Materials and Methods: Overall, 15 patients with prostate cancer were selected and. Each week, for each patient five consecutive cone beam computed tomograph...
متن کاملInclusion of the dose from kilovoltage cone beam CT in the radiation therapy treatment plans.
PURPOSE Cone beam CT is increasingly being used for daily patient positioning verification during radiation therapy treatments. The daily use of CBCT could lead to accumulated patient doses higher than the older technique of weekly portal imaging. There have been several studies focusing on measurement or calculation of the patient dose from CBCT recently. METHODS This study investigates the ...
متن کاملCommissioning kilovoltage cone‐beam CT beams in a radiation therapy treatment planning system
The feasibility of accounting of the dose from kilovoltage cone-beam CT in treatment planning has been discussed previously for a single cone-beam CT (CBCT) beam from one manufacturer. Modeling the beams and computing the dose from the full set of beams produced by a kilovoltage cone-beam CT system requires extensive beam data collection and verification, and is the purpose of this work. The be...
متن کاملPatient radiation doses for electron beam CT.
A Monte Carlo based computer model has been developed for electron beam computed tomography (EBCT) to calculate organ and effective doses in a humanoid hermaphrodite phantom. The program has been validated by comparison with experimental measurements of the CT dose index in standard head and body CT dose phantoms; agreement to better than 8% has been found. The robustness of the model has been ...
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ژورنال
عنوان ژورنال: Reports of Practical Oncology and Radiotherapy
سال: 2021
ISSN: 2083-4640,1507-1367
DOI: 10.5603/rpor.a2021.0038