Evaluation of Calculation Algorithms for photon Beam dose in Heterogeneous Medium
Journal Title: JOURNAL OF ADVANCES IN PHYSICS - Year 0, Vol 9, Issue 2
Abstract
The success of the implementations of a radiotherapy treatment planning system is determined by the ability of the dose calculation algorithms to reproduce the algorithm input data, and in most cases the agreement was found within ±2%. Varian linear accelerator DMX, TPS Eclipse (version 10.33) is used and absolute dosimetry and relative dosimetry system (PTW, Freiburg, Germany) and 2D array were also used. The Calculation of Analytical Anisotropic Algorithm (AAA) is more accurate than the Pencil beam Algorithm (PBC) in heterogeneity medium in comparison with practical measurement. The extent of the effort required to carry out a validation study of the complexity of that described here precludes its use as a routine component of TPS commissioning. Our realistic recommendation is that commissioning includes tests aimed at confirming that raw beam data have been entered correctly and that the operation of the system is understood. Finally, the study tell us that the observed deviations between TPS calculated using Eclipse version 10.33 and measured dose in the present of heterogeneous medium are well within the tolerance levels and the study also show that the use of Eclipse (version 10.33) TPS, AAA algorithm records significant improvement than the previous TPS versions especially in the present of low density inhomogeneity.
Authors and Affiliations
G. S. Hassan, Saleh A. Mohamed, Khaled M. Elshahat
Keywords
Related Articles
- EP ID EP653743
- DOI 10.24297/jap.v9i2.1405
- Views 60
- Downloads 0
Electron transport in double bridges system
In this paper we investigate theoretically the effect of introducing wide band, and Narrow band approximations for the bridge energy band on the electron transport process (ET) through the donor-bridges-acceptor (DBA) sy...
Enrichment of Poly Vinyl Chloride (PVC) Biological Uses Through Sodium Chloride Filler, Density Functional Theory (DFT) Supported Experimental Study
Samples of pristine poly vinyl chloride (PVC) and other samples of the same matrix containing a variable amount of inorganic sodium salt (sodium chloride NaCl) were prepared via simple casting route in a dimethyl sulfoxi...
Four Bosons Electromagnetism
Based on light invariance and electric conservation a four bosons electromagnetism is proposed. It enlarges theelectric charge conservation beyond displacement current and Dirac charge to a new physical situation where t...
Low-Inductive Extended Z-Discharge As a Manyrange Source of Radiations
The present paper summarizes the results of studying of nanosecond low-inductive extended discharge as source of electromagnetic radiations and analyzes the works of other research groups that can throw upon additional l...
Characterization of Thermally Evaporated CdSe1-XSX Thin Films for Solar Cells Applications
Binary semiconductor CdSe and CdS thin films are widely used for optoelectronic devices and window materials. The formation of ternary CdSe1-xSx thin films improves the physical characteristics of the binary CdSe thin fi...