A Monte Carlo model for independent dose verification in serial tomotherapy

Vikren Sarkar, Sotirios Stathakis, Nikos Papanikolaou

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Due to the very high complexity of IMRT treatment plans, it is imperative to perform dose verification, preferably before patient delivery. The aim of this project is to develop a Monte-Carlo-based model to verify the final dose distributions of plans developed using the Peacock system (CORVUS Treatment Planning System and MIMiC collimator). The system delivers radiation through arc therapy and uses sinogram files to determine the state of each of the multileaf collimator leaves. In-house software was developed using Matlab to decode the sinograms and create blocklets that are used as input in an MCSIM model of the MIMiC collimator attached to a Varian Clinac 600C. After validating the model, a prostate and head and neck case were simulated. The CORVUS-predicted dose distributions were compared with the Monte Carlo dose distributions. As expected, the results agreed very closely for the homogeneous case of the prostate but there were large discrepancies observed for the more heterogeneous head and neck case.

Original languageEnglish (US)
Pages (from-to)385-391
Number of pages7
JournalTechnology in Cancer Research and Treatment
Volume7
Issue number5
DOIs
StatePublished - Oct 2008

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Keywords

  • Dose verification
  • IMRT
  • Monte Carlo
  • Serial tomotherapy

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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