SU-E-T-876: Comparison of Dose Distributions for Plans Optimized by Using Monte Carlo and Ray-Tracing Algorithms for the Treatment of Lung Tumors with CyberKnife

2011 ◽  
Vol 38 (6Part24) ◽  
pp. 3693-3693
Author(s):  
J Fan ◽  
S Hayes ◽  
L Jin ◽  
L Wang ◽  
J Yang ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Ray Tracing ◽  
Lung Tumors ◽  
Dose Distributions

scholarly journals Comparison of dose distributions calculated by the cyberknife Monte Carlo and ray tracing algorithms for lung tumors: a phantom study

2015 ◽  
Vol 100 ◽  
pp. 03003 ◽  
Author(s):  
Canan Koksal ◽  
Ugur Akbas ◽  
Murat Okutan ◽  
Bayram Demir ◽  
Ismail Hakki Sarpun
Keyword(s):  
Monte Carlo ◽  
Ray Tracing ◽  
Lung Tumors ◽  
Phantom Study ◽  
Dose Distributions

Dose distributions in SBRT of lung tumors: Comparison between two different treatment planning algorithms and Monte-Carlo simulation including breathing motions

2006 ◽  
Vol 45 (7) ◽  
pp. 978-988 ◽  
Author(s):  
Ingmar Lax ◽  
Vanessa Panettieri ◽  
Berit Wennberg ◽  
Maria Amor Duch ◽  
Ingemar Näslund ◽  
...  
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Treatment Planning ◽  
Lung Tumors ◽  
Dose Distributions ◽  
Planning Algorithms

scholarly journals Comparing the clinical outcomes in stereotactic body radiotherapy for lung tumors between Ray-Tracing and Monte-Carlo algorithms

Oncotarget ◽  
2015 ◽  
Vol 7 (14) ◽  
pp. 19045-19053 ◽  
Author(s):  
Jin Ho Song ◽  
Ki Mun Kang ◽  
Hoon-Sik Choi ◽  
Hojin Jeong ◽  
In Bong Ha ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Ray Tracing ◽  
Clinical Outcomes ◽  
Stereotactic Body Radiotherapy ◽  
Lung Tumors ◽  
Monte Carlo Algorithms

Analysis of a Hybrid PV/T Concept Based on Wavelength Selective Films

2013 ◽  
Author(s):  
Tejas U. Ulavi ◽  
Jane H. Davidson ◽  
Tim Hebrink
Keyword(s):  
Thin Film ◽  
Monte Carlo ◽  
Total Energy ◽  
Ray Tracing ◽  
Solar Spectrum ◽  
Photovoltaic Module ◽  
Optical Performance ◽  
Technical Performance ◽  
Compound Parabolic Concentrator ◽  
Pv Modules

The technical performance of a non-tracking hybrid PV/T concept that uses a wavelength selective film is modeled. The wavelength selective film is coupled with a compound parabolic concentrator to reflect and concentrate the infrared portion of the solar spectrum onto a tubular absorber while transmitting the visible portion of the spectrum to an underlying thin-film photovoltaic module. The optical performance of the CPC/selective film is obtained through Monte Carlo Ray-Tracing. The CPC geometry is optimized for maximum total energy generation for a roof-top application. Applied to a rooftop in Phoenix, Arizona USA, the hybrid PV/T provides 20% more energy compared to a system of the same area with independent solar thermal and PV modules, but the increase is achieved at the expense of a decrease in the electrical efficiency from 8.8% to 5.8%.

Uncertainties evaluations in the ray-tracing algorithm based on Monte Carlo method

2014 ◽  
Author(s):  
Guojin Feng ◽  
Ping Li ◽  
Yingwei He ◽  
Yu Wang ◽  
Houping Wu
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Ray Tracing ◽  
Tracing Algorithm

Methods to Accelerate Ray Tracing in the Monte Carlo Method for Surface-to-Surface Radiation Transport

2006 ◽  
Vol 128 (9) ◽  
pp. 945-952 ◽  
Author(s):  
Sandip Mazumder
Keyword(s):  
Monte Carlo ◽  
Ray Tracing ◽  
Radiation Transport ◽  
Three Dimensional ◽  
Intersection Point ◽  
Surface Radiation ◽  
Computational Domain ◽  
Two Dimensional ◽  
Spatial Partitioning ◽  
The Monte Carlo Method

Two different algorithms to accelerate ray tracing in surface-to-surface radiation Monte Carlo calculations are investigated. The first algorithm is the well-known binary spatial partitioning (BSP) algorithm, which recursively bisects the computational domain into a set of hierarchically linked boxes that are then made use of to narrow down the number of ray-surface intersection calculations. The second algorithm is the volume-by-volume advancement (VVA) algorithm. This algorithm is new and employs the volumetric mesh to advance the ray through the computational domain until a legitimate intersection point is found. The algorithms are tested for two classical problems, namely an open box, and a box in a box, in both two-dimensional (2D) and three-dimensional (3D) geometries with various mesh sizes. Both algorithms are found to result in orders of magnitude gains in computational efficiency over direct calculations that do not employ any acceleration strategy. For three-dimensional geometries, the VVA algorithm is found to be clearly superior to BSP, particularly for cases with obstructions within the computational domain. For two-dimensional geometries, the VVA algorithm is found to be superior to the BSP algorithm only when obstructions are present and are densely packed.

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