:: Volume 2, Issue 4 (3-2005) ::
Int J Radiat Res 2005, 2(4): 191-195 Back to browse issues page
Comparison of MCNP4C, 4B and 4A Monte Carlo codes when calculating electron therapy depth doses
H. Nedaie , M. Shariary , H. Gharaati , M. Allahverdi , M.A. Mosleh-Shirazi
, nedaieha@sina.tums.ac.ir
Abstract:   (16886 Views)

ABSTRACT

Background:

accurate methods of radiation therapy dose calculation. There are different Monte Carlo codes

for simulation of photons, electrons and the coupled transport of electrons and photons. MCNP

is a general purpose Monte Carlo code that can be used for electron, photon and coupled

photon-electron transport.

Monte Carlo simulation of radiation transport is considered to be one of the most

Materials and Methods:

calculating electron beam doses in water. For simulating, the geometry and other parameters

were the same for three codes. By choosing two energy indexing algorithm (ITS & MCNP),

absorbed doses were scored in water. 10

In this study the MCNP4A, 4B and 4C have been compared when6 Particles were followed in these three cases.

Results:

used in 4B and 4C versions. There was a good agreement between versions 4B and 4C. For the

energy spectrum, there were significant differences between these three versions in two planes.

MCNP4C and 4B gave different results compared to 4A when the ITS algorithm was

Conclusion:

for electron transport and also requires a shorter time than the two previous versions. These

results, in addition to the practical measurements acquired with MCNP4B by other investigators,

suggest that in electron transport the user should use the ITS indexing energy

algorithm.

Because of new improvements in electron transport in 4C, this version is reliableIran. J. Radiat. Res., 2005 2 (4): 191-195

Keywords:

Radiotherapy, electron therapy, Monte Carlo, absorbed dose, energy spe
Keywords: absorbed dose, Monte Carlo, electron therapy, Radiotherapy, energy spectrum
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Type of Study: Original Research | Subject: Radiation Biology


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