Sign on

SAO/NASA ADS Physics Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· References in the article
· Citations to the Article (17) (Citation History)
· Refereed Citations to the Article
· Reads History
·
· Translate This Page
Title:
Intrafractional motion during proton beam scanning
Authors:
Lambert, J.; Suchowerska, N.; McKenzie, D. R.; Jackson, M.
Affiliation:
AA(School of Physics, The University of Sydney, NSW 2006, Australia ; Department of Radiation Oncology, Royal Prince Alfred Hospital, Camperdown, NSW 2050, Australia ), AB(School of Physics, The University of Sydney, NSW 2006, Australia ; Department of Radiation Oncology, Royal Prince Alfred Hospital, Camperdown, NSW 2050, Australia), AC(School of Physics, The University of Sydney, NSW 2006, Australia), AD(Department of Radiation Oncology, Royal Prince Alfred Hospital, Camperdown, NSW 2050, Australia)
Publication:
Physics in Medicine and Biology, Volume 50, Issue 20, pp. 4853-4862 (2005).
Publication Date:
10/2005
Origin:
IOP
DOI:
10.1088/0031-9155/50/20/008
Bibliographic Code:
2005PMB....50.4853L

Abstract

Patient and internal organ motion during treatment with a scanned proton beam can introduce unplanned heterogeneities in the dose distribution throughout the irradiated volume. With static beam techniques, a margin around the target volume is added to compensate for patient and organ motion. This margin may not provide the solution with dynamic beam scanning. Intrafractional motion parallel and perpendicular to the beam axis is studied using two different scanning methods on a cubic water phantom. The direction of motion relative to the beam scanning direction as well as the method of scanning the proton beam across the target has a significant effect on the resulting dose distribution within the target volume. In the extreme cases studied here up to 100% of the target receives a dose outside the recommended limits, with a minimum dose as low as 34% of the prescribed dose.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

Find Similar Abstracts:

Use: Authors
Title
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints