SU-E-T-182: The Effect of Multi Leaf Collimator Characteristics in Treatment Planning Systems Calculation Errors as Detected in Phantom and in Patient QA

2013 ◽  
Vol 40 (6Part13) ◽  
pp. 246-246
Author(s):  
M Bakhtiari ◽  
J Schmitt ◽  
A Sedaghat ◽  
V Aroumougame ◽  
M Sarfaraz ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Planning Systems ◽  
Treatment Planning Systems ◽  
Multi Leaf Collimator

Comparison of Algorithms for Static Multi-Leaf Collimator Field Segmentation

2011 ◽  
Vol 80-81 ◽  
pp. 1091-1095
Author(s):  
Dong Dong Ni ◽  
Xu Wu ◽  
Jian Qi Chen ◽  
Jia Jing ◽  
Cai Xia Liu
Keyword(s):  
Treatment Planning ◽  
Treatment Time ◽  
Beam Intensity ◽  
Effective Strategy ◽  
Monitor Unit ◽  
Planning Systems ◽  
Treatment Planning Systems ◽  
Multi Leaf Collimator ◽  
Leaf Sequencing ◽  
Number Of Segments

Purpose: A multi-leaf collimator leaf sequencing comparison program in the sense that it translates beam intensity maps into the least number of MLC field segments was presented. Methods: The IMRT leaf sequencing calculation program based on Galvin, Bortfeld algorithms was constructed. The output of the leaf sequencing program were the number of segment and the total number of monitor unit. Results: Assuming 15 x 15 bixel fields with an average of 10 intensity levels, Bortfeld algorithm could yield better result on example 1 while Galvin algorithm yielded better results on example 2. Conclusions: This represented a useful tool for optimizing the leaf sequencing of static multi-leaf collimator that can yield shorter treatment time and higher utilization of photons by comparing with the total number of monitor units and number of segments of existed typical algorithms. It was an effective strategy and could be applied in commercial Treatment Planning Systems.

A novel convolution-based approach to address ionization chamber volume averaging effect in model-based treatment planning systems

2015 ◽  
Vol 60 (16) ◽  
pp. 6213-6226 ◽  
Author(s):  
Brendan Barraclough ◽  
Jonathan G Li ◽  
Sharon Lebron ◽  
Qiyong Fan ◽  
Chihray Liu ◽  
...  
Keyword(s):  
Treatment Planning ◽  
Ionization Chamber ◽  
Volume Averaging ◽  
Planning Systems ◽  
Model Based ◽  
Chamber Volume ◽  
Treatment Planning Systems
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