SU-E-T-638: Influence of Dose Rate On Step and Shoot IMRT Plan Quality and Deliverability

2013 ◽  
Vol 40 (6Part21) ◽  
pp. 352-353
Author(s):  
S Sharma ◽  
D Manigandan ◽  
A Biswas ◽  
B Mohanty ◽  
V Subramani ◽  
...  
Keyword(s):  
Dose Rate ◽  
Imrt Plan ◽  
Plan Quality ◽  
Step And Shoot

scholarly journals EP-1207: Influence of dose rate on dynamic IMRT plan quality and deliverability

2013 ◽  
Vol 106 ◽  
pp. S457
Author(s):  
S. Sharma ◽  
M. Durai ◽  
V. Subramani ◽  
B. Manoj ◽  
S. Aman ◽  
...  
Keyword(s):  
Dose Rate ◽  
Imrt Plan ◽  
Plan Quality

SU-E-T-636: Impact of Different Intensity Levels On Step and Shoot IMRT Plan Quality and Deliverability

2013 ◽  
Vol 40 (6Part20) ◽  
pp. 352-352
Author(s):  
D Manigandan ◽  
S Sharma ◽  
A Biswas ◽  
B Mohanty ◽  
V Subramani ◽  
...  
Keyword(s):  
Imrt Plan ◽  
Plan Quality ◽  
Step And Shoot

Direct computation of the “step-and-shoot” IMRT plan

2000 ◽  
pp. 35-36
Author(s):  
Pekka Kolmonen ◽  
Jouko Tervo ◽  
Kai Jaatinen ◽  
Tapani Lahtinen
Keyword(s):  
Imrt Plan ◽  
Direct Computation ◽  
Step And Shoot

Comparison of Elekta VMAT with helical tomotherapy and fixed field IMRT: Plan quality, delivery efficiency and accuracy

2010 ◽  
Vol 37 (3) ◽  
pp. 1350-1359 ◽  
Author(s):  
Min Rao ◽  
Wensha Yang ◽  
Fan Chen ◽  
Ke Sheng ◽  
Jinsong Ye ◽  
...  
Keyword(s):  
Helical Tomotherapy ◽  
Imrt Plan ◽  
Plan Quality ◽  
Fixed Field ◽  
Delivery Efficiency

MO-D-BRB-01: Study of Systemic and Random Errors On VMAT and IMRT Plan Quality and Deliver Accuracy

2009 ◽  
Vol 36 (6Part20) ◽  
pp. 2692-2692
Author(s):  
F Chen ◽  
M Rao ◽  
J Ye ◽  
S Luan ◽  
D Shepard ◽  
...  
Keyword(s):  
Random Errors ◽  
Imrt Plan ◽  
Plan Quality

SU-E-T-720: Maintaining Prostate IMRT Plan Quality Using the Fraction of Rectum Overlapping the PTV

2013 ◽  
Vol 40 (6Part22) ◽  
pp. 372-372
Author(s):  
T Hwang ◽  
S Kang ◽  
T Suh
Keyword(s):  
Imrt Plan ◽  
Plan Quality

SU-E-T-492: Influence of Clipping PTV in Build-Up Region On IMRT Plan Quality and Deliverability

2015 ◽  
Vol 42 (6Part20) ◽  
pp. 3447-3448
Author(s):  
S Sharma ◽  
D Manigandan ◽  
P Sahai ◽  
A Biswas ◽  
V Subramani ◽  
...  
Keyword(s):  
Imrt Plan ◽  
Plan Quality

scholarly journals Does inverse planning improve plan quality in interstitial high-dose-rate breast brachytherapy?

2020 ◽  
Vol 12 (2) ◽  
pp. 166-174 ◽  
Author(s):  
Tibor Major ◽  
Georgina Fröhlich ◽  
Norbert Mészáros ◽  
Viktor Smanykó ◽  
Csaba Polgár
Keyword(s):  
Dose Rate ◽  
High Dose Rate ◽  
High Dose ◽  
Plan Quality ◽  
Inverse Planning ◽  
Breast Brachytherapy

scholarly journals Verification of an optimizer algorithm by the beam delivery evaluation of intensity-modulated arc therapy plans

2021 ◽  
Vol 55 (4) ◽  
pp. 508-515
Author(s):  
Tamas Pocza ◽  
Domonkos Szegedi ◽  
Tibor Major ◽  
Csilla Pesznyak
Keyword(s):  
Dose Rate ◽  
Early Stage ◽  
Plan Quality ◽  
Imaging Device ◽  
Passing Rate ◽  
Treatment Plans ◽  
Beam Delivery ◽  
Fraction Dose ◽  
Delivery Accuracy ◽  
Gamma Passing Rate

Abstract Background In the case of dynamic radiotherapy plans, the fractionation schemes can have dosimetric effects. Our goal was to define the effect of the fraction dose on the plan quality and the beam delivery. Materials and methods Treatment plans were created for 5 early-stage lung cancer patients with different dose schedules. The planned total dose was 60 Gy, fraction dose was 2 Gy, 3 Gy, 5 Gy, 12 Gy and 20 Gy. Additionally renormalized plans were created by changing the prescribed fraction dose after optimization. The dosimetric parameters and the beam delivery parameters were collected to define the plan quality and the complexity of the treatment plans. The accuracy of dose delivery was verified with dose measurements using electronic portal imaging device (EPID). Results The plan quality was independent from the used fractionation scheme. The fraction dose could be changed safely after the optimization, the delivery accuracy of the treatment plans with changed prescribed dose was not lower. According to EPID based measurements, the high fraction dose and dose rate caused the saturation of the detector, which lowered the gamma passing rate. The aperture complexity score, the gantry speed and the dose rate changes were not predicting factors for the gamma passing rate values. Conclusions The plan quality and the delivery accuracy are independent from the fraction dose, moreover the fraction dose can be changed safely after the dose optimization. The saturation effect of the EPID has to be considered when the action limits of the quality assurance system are defined.

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