SU-GG-T-445: Dosimetric Analysis of Attenuation in the Leksell Gamma Knife PERFEXION Calibration Phantom Adaptor

2008 ◽  
Vol 35 (6Part16) ◽  
pp. 2827-2827
Author(s):  
J Bhatnagar ◽  
J Novotny ◽  
M Quader ◽  
M Huq
Keyword(s):  
Gamma Knife ◽  
Calibration Phantom ◽  
Dosimetric Analysis ◽  
Gamma Knife Perfexion

scholarly journals Verification of dose distribution on the gamma knife perfexion radiosurgery using gafchromic EBT3 film: RANDO phantom study

2020 ◽  
Vol 1528 ◽  
pp. 012028
Author(s):  
I N Pranditayana ◽  
A R. Setiadi ◽  
M M Ramadhan ◽  
D Tandian ◽  
S A. Pawiro
Keyword(s):  
Gamma Knife ◽  
Dose Distribution ◽  
Phantom Study ◽  
Gamma Knife Perfexion

scholarly journals Clinical Positioning Accuracy for Multisession Stereotactic Radiotherapy With the Gamma Knife Perfexion

2017 ◽  
Vol 16 (6) ◽  
pp. 893-899
Author(s):  
Wade P. Smith ◽  
Lori A. Young ◽  
Mark H. Phillips ◽  
Michael Cheung ◽  
Lia M. Halasz ◽  
...  
Keyword(s):  
Gamma Knife ◽  
Stereotactic Radiotherapy ◽  
Positioning Accuracy ◽  
Gamma Knife Perfexion

SU-GG-T-513: Patient-Specific Independent GammaPlan Quality Assurance for Gamma Knife Perfexion

2010 ◽  
Vol 37 (6Part23) ◽  
pp. 3305-3305
Author(s):  
M Mamalui-Hunter ◽  
T Zhao ◽  
R Drzymala
Keyword(s):  
Quality Assurance ◽  
Gamma Knife ◽  
Patient Specific ◽  
Gamma Knife Perfexion

scholarly journals Patient-specific independent 3D GammaPlan quality assurance for Gamma Knife Perfexion radiosurgery

2013 ◽  
Vol 14 (1) ◽  
pp. 62-70 ◽  
Author(s):  
Maria Mamalui-Hunter ◽  
Sridhar Yaddanapudi ◽  
Tianyu Zhao ◽  
Sasa Mutic ◽  
Daniel A. Low ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Gamma Knife ◽  
Patient Specific ◽  
Gamma Knife Perfexion

An Effective Method of Simulation for the Leksell Gamma Knife Perfexion by Rotating Particles in the Phase Space File

2020 ◽  
Vol 65 (1) ◽  
pp. 54-58
Author(s):  
T. Medjadj ◽  
A. Ksenofontov ◽  
A. Dalechina
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Phase Space ◽  
Gamma Knife ◽  
Homogeneous Medium ◽  
Planning System ◽  
Monte Carlo Code ◽  
Output Factors ◽  
Gamma Knife Perfexion ◽  
Conical Form

Purpose: To develop an effective method of Monte Carlo simulation of the GammaKnife Perfexion system by rotating particles in the phase space file (PSF). This method does not require simulating of all 192 sources that are distributed in the conical form of the Perfexion collimator. The simulation was performed only for 5 out of 192 sources for each collimator size. Material and methods: Monte Carlo simulation of dose distribution for previous models of GammaKnife system requires phase space file for only one source, since this phase space is identical for all the 201 sources. The Perfexion model is more complex due to the non-coaxial positions of the sources and the complexity of the collimator system itself. In this work, we present an effective method to simulate the Perfexion model using a phase space file. Penelope Monte Carlo code was used to perform this simulation. In this method, the PSF was obtained for one source in each ring, resulting in five files for each collimator size. PSF for other sources were created by azimuthal redistribution of particles, in the obtained PSF, by rotation around the Z-axis. The phase space files of the same ring were then stored together in a single file. Results: The paper presented MC simulation using the azimuthal redistribution of particles in the phase space file by rotation around the Z-axis. The simulation has been validated comparing the dose profiles and output factors with the data of the algorithm TMR10 planning system Leksell Gamma Plan (LGP) in a homogeneous environment. The acceptance criterion between TMR10 and Monte Carlo calculations for the profiles was based on the gamma index (GI). Index values more than one were not detected in all cases, which indicates a good agreement of results. The differences between the output factors obtained in this work and the TMR10 data for collimators 8 mm and 4 mm are 0.74 and 0.73 %, respectively. Conclusion: In this work successfully implemented an effective method of simulating the Leksell Gamma knife Perfexion system. The presented method does not require modeling for all 192 sources distributed in the conical form of the Perfexion collimator. The simulation was performed for only five sources for each collimator and their files PSF were obtained. These files were used to create the PSF files for other sources by azimuthal redistribution of particles, in these files, by rotation around the Z-axis providing correct calculations of dose distributions in a homogeneous medium for 16, 8 and 4 mm collimators.

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