SU-E-T-289: On the Use of a Diode Array for the Commissioning of Dynamically-Wedged Asymmetric Fields Generated by Varian EDW's in the Pinnacle Treatment Planning System

2012 ◽  
Vol 39 (6Part14) ◽  
pp. 3770-3770
Author(s):  
M Ahmad ◽  
W Liu ◽  
J Deng ◽  
K Nguyen ◽  
D Wu ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Planning System ◽  
Treatment Planning System ◽  
Diode Array

scholarly journals Evaluation of a software system for estimating planned dose error in patients, based on planar IMRT QA measurements

2014 ◽  
Vol 48 (1) ◽  
pp. 87-93 ◽  
Author(s):  
Mohammad Bakhtiari ◽  
Ashkan Parniani ◽  
Fritz Lerma ◽  
Shannon Reynolds ◽  
James Jordan ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Organs At Risk ◽  
Intensity Modulated Radiation Therapy ◽  
Pass Rate ◽  
Planning System ◽  
Treatment Planning System ◽  
Background Intensity ◽  
Diode Array ◽  
Software System ◽  
Different Depths

Abstract Background. Intensity modulated radiation therapy (IMRT) dosimetry verification is routinely conducted via integrated or individual field dosimetry using film or a matrix of detectors. Techniques and software systems are commercially available which use individual field dosimetry measurements as input into algorithms that estimate 3D patient dose distributions on CT scan derived target volumes and organs at risk (OARs), thus allowing direct dose-volume histogram (DVH) analysis vs. treatment planning system (TPS) DVH. The purpose of this work is to present a systematic benchmarking technique to evaluate the accuracy and consistency of such a software system. Methods. A MapCheck2 diode array and 3DVH™ software from Sun Nuclear were used for this study. Delivered planar dose was measured with the diode array as an input to 3DVH™ software that was used to estimate the 3D dose matrix. Accuracy of the output of 3DVH™ is tested by comparing measured planar doses over a range of depths to the same planes reconstructed by 3DVH™. Different fields from complex IMRT cases were selected and examined in this study. The sensitivity to depth of measurement was evaluated. Results. The Gamma Index analysis, comparing calculated 3D dose with measured 3D dose with 2% and 2mm distance-to-agreement (DTA) criteria returned a pass rate of > 90% for all patient cases calculated by the treatment planning system and it returned a pass rate of > 96% in 9 out of 10 cases calculated by 3DVH™. Extracted computed dose planes with 3DVH™ software at different depths in the flat phantom passed all gamma evaluation analyses when compared to measured planes at different depths using MapCheck2. Conclusions. Studying complex head and neck IMRT fields, it was shown that the 3D dose distribution predicted by the planned dose perturbation (PDP) algorithm is both accurate and consistent.

scholarly journals EP-1787 Commissioning of the RayStation treatment planning system in a multi-vendor context

2019 ◽  
Vol 133 ◽  
pp. S967
Author(s):  
A. Savini ◽  
F. Rosica ◽  
V. D'Errico ◽  
T. Licciardello ◽  
E. Menghi ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Planning System ◽  
Treatment Planning System
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