نتایج جستجو برای: dose distribution verification

تعداد نتایج: 975918  

2012
CW Kong SK Yu KY Cheung H Geng YW Ho WW Lam WK Wong

PURPOSE To evaluate the performance of 2D-array I'mRT MatriXX for dose verification of TomoDirect treatment plans. METHODS In this study, a 2D-array ion chamber device - the I'mRT MatriXX and Multicube Phantom from IBA - was used for dose verification of different TomoDirect plans. Pre-treatment megavoltage computed tomography (MVCT) was performed on the phantom setup for position correction....

Journal: :Medical physics 2003
Larry DeWerd Rock Mackie

IMRT plans are usually verified by phantom measurements: dose distributions are measured using film and the absolute dose using an ionization chamber. The measured and calculated doses are compared and planned MUs are modified if necessary. To achieve a conformal dose distribution, IMRT fields are composed of small subfields, or "beamlets." The size of beamlets is on the order of 1 x 1 cm2. The...

Journal: :DEStech Transactions on Computer Science and Engineering 2019

Journal: :Japanese Journal of Radiological Technology 1995

2010
S Xu C Xie Z Ju X Dai H Gong L Wang J Yang

PURPOSE To investigate the clinical usage of dose verification of Helical Tomotherapy plans by using 2D-array ion chambers, and to develop an efficient way to validate the dose delivered for the patients during treatments. MATERIALS AND METHODS A pixel-segmented ionisation chamber device, IMRT MatriXX™ and Multicube™ phantom from IBA were used on ten selected Tomotherapy IMRT/IGRT head and ne...

Journal: :International journal of radiation oncology, biology, physics 1997
C Burman C S Chui G Kutcher S Leibel M Zelefsky T LoSasso S Spirou Q Wu J Yang J Stein R Mohan Z Fuks C C Ling

PURPOSE To improve the local control of patients with adenocarcinoma of the prostate we have implemented intensity modulated radiation therapy (IMRT) to deliver a prescribed dose of 81 Gy. This method is based on inverse planning and the use of dynamic multileaf collimators (DMLC). Because IMRT is a new modality, a major emphasis was on the quality assurance of each component of the process and...

Journal: :the modares journal of electrical engineering 2010
seyed morteza - babamir sayed - jalili

static verification and software testing are not able to verify software single-handedly. therefore, another approach called run-time verification dealing with verifying software behavior against constraints at run-time received attention. however, the run-time verification faces the problem of verification of run-time activities against the constraints are specified in high-level and abstractl...

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