SU-FF-T-195: Effect of Respiratory Gating On the Dose Distributions of Dynamic Wedge and IMRT Treatment Fields

2007 ◽  
Vol 34 (6Part10) ◽  
pp. 2446-2446
Author(s):  
P Lindsay ◽  
T Briere ◽  
P Balter ◽  
R Sadagopan ◽  
G Starkschall ◽  
...  
Keyword(s):  
Respiratory Gating ◽  
Dose Distributions ◽  
Dynamic Wedge

A study of enhanced dynamic wedge dosimetry using a 2D ion chamber array detector

2015 ◽  
Vol 14 (4) ◽  
pp. 394-402
Author(s):  
S. A. Syam Kumar ◽  
P. Aparna ◽  
P. T. Anjana ◽  
C. P. Aswathi ◽  
G. P. Sitha
Keyword(s):  
Array Detector ◽  
Good Tool ◽  
Dose Distributions ◽  
Ion Chamber ◽  
Dynamic Wedge ◽  
Shoulder Region ◽  
Different Depths ◽  
Solid Water ◽  
Scanned Images ◽  
2D Array

AbstractThe purpose of this work was to study the dosimetric properties of the enhanced dynamic wedge using a Seven29 ion chamber array. The PTW Seven29 ion chamber array and solid water phantoms were used for the study. Primarily, the solid water phantoms with the two-dimensional (2D) array were scanned using a computed tomography scanner at different depths. Using these scanned images, planning was performed for different wedge angles at 6 and 15 MV. A dose of 100 CGy was delivered in each case. For each delivery, the required monitoring units (MUs) were calculated. Using the same setup with a Varian Clinac iX, the calculated MU was delivered for different wedge angles. Subsequently, the different wedged dose distributions that had been obtained were analysed using Verisoft software. A shoulder-like region was observed in the profile; this region reduced as depth increased. The percentage deviation between the planned and measured doses at the shoulder region fell within the range of 0·9–4·3%. The standard deviation between planned and measured doses at shoulder region in the profile fell within 0·08±0·02 at different depths. The standard deviations between planned and measured wedge factors for different depths (2·5, 5, 10 and 15 cm) were 0·0021, 0·0007, 0·0050 and 0·0001 for 6 MV and 0·0024, 0·0191, 0·0013 and 0·0005 for 15 MV, respectively. On the basis of the studies that we performed, it can be concluded that the 2D ion chamber array is a good tool for enhanced dynamic wedge dosimetry.

scholarly journals 3D heterogeneous dose distributions for total body irradiation patients

2011 ◽  
Vol 12 (3) ◽  
pp. 205-214 ◽  
Author(s):  
Marie-Claude Lavallée ◽  
Sylviane Aubin ◽  
Marie Larochelle ◽  
Isabelle Vallières ◽  
Luc Beaulieu
Keyword(s):  
Total Body Irradiation ◽  
Dose Distributions ◽  
Total Body

scholarly journals Deep learning prediction of proton and photon dose distributions for paediatric abdominal tumours

2021 ◽  
Vol 156 ◽  
pp. 36-42
Author(s):  
F. Guerreiro ◽  
E. Seravalli ◽  
G.O. Janssens ◽  
J.H. Maduro ◽  
A.C. Knopf ◽  
...  
Keyword(s):  
Deep Learning ◽  
Dose Distributions ◽  
Photon Dose ◽  
Abdominal Tumours
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