open access

Vol 9, No 6 (2004)
Published online: 2004-01-01
Submitted: 2004-02-02
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Track – a Monte Carlo computer code to assist design of scattering and collimating systems for proton therapy beams

Miloslav Rajćan, Márius Pavlović
DOI: 10.1016/S1507-1367(04)71033-0
·
Rep Pract Oncol Radiother 2004;9(6):235-241.

open access

Vol 9, No 6 (2004)
Published online: 2004-01-01
Submitted: 2004-02-02

Abstract

Purpose

Heavy charged particle therapy beams need to be modified before entering the target in order to deliver the prescribed spatial dose distribution. Small and medium lateral treatment fields are usually formed by a system of scatterers and collimators. A design goal is to mi-nimize the beam-losses in the vicinity of the patient in order to reduce the patient's irradiation by secondary particles while keeping a homo-geneous dose distribution over the treatment field.

Materials and methods

Track – a Monte Carlo code to calculate beam profiles on the target after passing through a system of scatterers and collimators has been developed. A physical model used in the code is presented. Its approximations and restrictions are discussed.

Results

Results of simulations are compared with experimental data. Validity of the current physical model is discussed.

Conclusions

The results are in a good agreement with experimental data.

Abstract

Purpose

Heavy charged particle therapy beams need to be modified before entering the target in order to deliver the prescribed spatial dose distribution. Small and medium lateral treatment fields are usually formed by a system of scatterers and collimators. A design goal is to mi-nimize the beam-losses in the vicinity of the patient in order to reduce the patient's irradiation by secondary particles while keeping a homo-geneous dose distribution over the treatment field.

Materials and methods

Track – a Monte Carlo code to calculate beam profiles on the target after passing through a system of scatterers and collimators has been developed. A physical model used in the code is presented. Its approximations and restrictions are discussed.

Results

Results of simulations are compared with experimental data. Validity of the current physical model is discussed.

Conclusions

The results are in a good agreement with experimental data.

Get Citation

Keywords

proton therapy; Moliere theory; Monte Carlo; multiple scattering

About this article
Title

Track – a Monte Carlo computer code to assist design of scattering and collimating systems for proton therapy beams

Journal

Reports of Practical Oncology and Radiotherapy

Issue

Vol 9, No 6 (2004)

Pages

235-241

Published online

2004-01-01

DOI

10.1016/S1507-1367(04)71033-0

Bibliographic record

Rep Pract Oncol Radiother 2004;9(6):235-241.

Keywords

proton therapy
Moliere theory
Monte Carlo
multiple scattering

Authors

Miloslav Rajćan
Márius Pavlović

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