Quantification of beam complexity in intensity-modulated radiation therapy treatment plans

2014 ◽  
Vol 41 (2) ◽  
pp. 021716 ◽  
Author(s):  
Weiliang Du ◽  
Sang Hyun Cho ◽  
Xiaodong Zhang ◽  
Karen E. Hoffman ◽  
Rajat J. Kudchadker
Keyword(s):  
Radiation Therapy ◽  
Intensity Modulated Radiation Therapy ◽  
Intensity Modulated ◽  
Treatment Plans ◽  
Beam Complexity ◽  
Therapy Treatment

scholarly journals Evaluation of jaws-only intensity modulated radiation therapy treatment plans using Octavius 4D system

2018 ◽  
Vol 24 (2) ◽  
pp. 75-78 ◽  
Author(s):  
Duong Thanh Tai ◽  
Luong Thi Oanh ◽  
Nguyen Dong Son ◽  
Truong Thi Hong Loan
Keyword(s):  
Radiation Therapy ◽  
Intensity Modulated Radiation Therapy ◽  
Patient Specific ◽  
Intensity Modulated ◽  
Angle Measurements ◽  
Gamma Index ◽  
Treatment Plans ◽  
Zero Degree ◽  
Gantry Angle ◽  
Therapy Treatment

Abstract Introduction: Jaws-Only Intensity modulated radiation therapy (JO-IMRT) is a technique uses the collimator jaws of the linear accelerator (LINAC) to delivery of complex intensity patterns. In previous studies, pretreatment patient specific quality assurance for those JO-IMRT were also performed using ionization chamber, MapCHECK2, and Octavius 4D and good agreements were shown. The aim of this study is to further verify JO-IMRT plans in 2 different cases: one with the gantry angle set equal to beam angle as in the plans and the other with gantry angle set to zero degree. Materials and Methods: Twenty-five JO-IMRT, previously verified, were executed twice for each plan. The first one used a real gantry angle, and the second one used a 0° gantry angle. Measurements were performed using Octavius 4D 1500. Results: The results were analyzed using Verisoft software. The results show that the Gamma average was 97.32 ± 2.21% for IMRT with a 0° gantry angle and 94.72 ± 2.67% for IMRT with a true gantry angle. Conclusion: In both cases, gamma index of more than 90% were found for all of our 25 JO-IMRT treatment plans.

SU-E-T-353: Decoding the Beam Complexity in Intensity-Modulated Radiation Therapy Plans

2014 ◽  
Vol 41 (6Part17) ◽  
pp. 305-305
Author(s):  
W Du ◽  
S Cho ◽  
X Zhang ◽  
K Hoffman ◽  
R Kudchadker
Keyword(s):  
Radiation Therapy ◽  
Intensity Modulated Radiation Therapy ◽  
Intensity Modulated ◽  
Beam Complexity
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