Published November 2014 | Version v1
Journal article Metadata-only

Monte Carlo simulation of linac irradiation with dynamic wedges

Creators

  • 1. Department of Medical Imaging and Radiological Sciences and Institute of Radiological Sciences, Tzu Chi College of Technology, 880, Section 2, Chien-Kuo Road, Hualien 970, Taiwan (China)
  • 2. Department of Radiology, Lotung Poh-Ai Hospital, 83, Nanchang Street, Luodong Township, Yilan County 265, Taiwan (China)
  • 3. Department of Radiation Therapy, Mennonite Christian Hospital, 44, Min-chuan Road, Hualien 970, Taiwan (China)

Description

This study aims to simulate the dose distributions of LINAC with dynamic wedges (DWs) under various field sizes and wedge angles by the BEAMnrc code with DYNJAWS component module. These were compared with those calculated by the treatment planning system (TPS) and the measured data. All percentage depth doses (PDDs) were found to be in good agreement between TPS, Monte Carlo (MC) and measurements made in open fields and fields with DWs. For dose profiles, compared with the MC and the measurements, TPS gives reliable results for large field sizes (>10 x 10 cm2) but results in significant errors in small field sizes (5 x 5 cm2). The entrance surface doses calculated by TPS were found to be significantly overestimated. For depths deeper than 0.5 cm, TPS yields PDDs in agreement with MC simulations. (authors)

Availability note (English)

Available from doi: http://dx.doi.org/10.1093/rpd/ncu211

Additional details

Identifiers

DOI
10.1093/rpd/ncu211;

Publishing Information

Journal Title
Radiation Protection Dosimetry
Journal Volume
162
Journal Issue
1-2
Journal Page Range
p. 24-28
ISSN
0144-8420

Conference

Title
2. International Conference on Radiation and Dosimetry in Various Fields of Research; 2. East European Radon Symposium - SEERAS
Acronym
RAD 2014
Dates
27-30 May 2014
Place
Nis (Serbia)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
France
INIS RN
46037035
Subject category
S61: RADIATION PROTECTION AND DOSIMETRY; S62: RADIOLOGY AND NUCLEAR MEDICINE; S43: PARTICLE ACCELERATORS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
COMPARATIVE EVALUATIONS; COMPUTERIZED SIMULATION; DEPTH DOSE DISTRIBUTIONS; ERRORS; IRRADIATION; LINEAR ACCELERATORS; MONTE CARLO METHOD; PLANNING; YIELDS
Descriptors DEC
ACCELERATORS; CALCULATION METHODS; EVALUATION; RADIATION DOSE DISTRIBUTIONS; SIMULATION; SPATIAL DOSE DISTRIBUTIONS

Optional Information

Notes
20 refs.