Monte Carlo Methods for Dose Calculations

2011 ◽  
pp. 97-116 ◽  
Author(s):  
Katia Parodi
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Methods ◽  
Dose Calculations

WE-C-224A-05: Patient Modeling and Organ Dose Calculations Using Monte Carlo Methods

2006 ◽  
Vol 33 (6Part19) ◽  
pp. 2239-2239
Author(s):  
X G Xu ◽  
H Paganetti
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Methods ◽  
Organ Dose ◽  
Dose Calculations ◽  
Patient Modeling

Dosimetric validation of Acuros®XB with Monte Carlo methods for photon dose calculations

2011 ◽  
Vol 38 (4) ◽  
pp. 2208-2221 ◽  
Author(s):  
K. Bush ◽  
I. M. Gagne ◽  
S. Zavgorodni ◽  
W. Ansbacher ◽  
W. Beckham
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Methods ◽  
Dose Calculations ◽  
Photon Dose

SU-E-T-485: Validation of Acuros XB Dose Calculations in SBRT Lung Planning with Monte Carlo Methods

2012 ◽  
Vol 39 (6Part17) ◽  
pp. 3816-3817
Author(s):  
K Bush ◽  
L Wang ◽  
E Mok
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Methods ◽  
Dose Calculations ◽  
Acuros Xb

Dose calculations in heterogeneous volumes with the GATE Monte Carlo software for radiological protection

2019 ◽  
Vol 54 (2) ◽  
pp. 125-132
Author(s):  
T. Deschler ◽  
N. Arbor ◽  
F. Carbillet ◽  
A. Nourreddine
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Methods ◽  
Medical Physics ◽  
Computation Time ◽  
Radiological Protection ◽  
Monte Carlo Code ◽  
Statistical Uncertainty ◽  
Dose Calculations ◽  
The Subject ◽  
Reduce Computation Time

Monte Carlo methods have become widespread in the field of radiation protection and in particular in medical physics where the use of voxelized volumes for the reconstruction of dosimetric quantities is increasing. Changing the resolution of a dose map can be useful to compare dosimetric results coming from voxelized volumes with different resolutions, or to reduce computation time. This can be done by superimposing a dosel grid with a different resolution than that of the voxelized volume. In this case, each dosel will cover several voxels, leading the Monte Carlo code to calculate the dose in heterogeneous volumes. Two algorithms are available in GATE to perform these calculations, the Volume-Weighting (V-W) and the Mass-Weighting (M-W) algorithms, the latter being the subject of this work. In a general way, the M-W algorithm tends to reconstruct a higher dose than that the V-W one. In dosels involving heavy and lightweight materials (air-skin, bone-tissue), the M-W reconstructed dose is better estimated than the V-W one (up to 10% better at the air-skin interface). Moreover, the statistical uncertainty of the M-W dose can be up to 80% lower than the V-W one at air-skin interfaces. These results show that the M-W algorithm is more suitable for radiological protection applications and must be preferentially used in GATE for dose calculations in heterogeneous volumes.

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