Microdosimetric comparison of scanned and conventional proton beams used in radiation therapy.

Abstract

Multiple groups have hypothesised that the use of scanning beams in proton therapy will reduce the neutron component of secondary radiation in comparison with conventional methods with a corresponding reduction in risks of radiation-induced cancers. Loma Linda University Medical Center (LLUMC) has had FDA marketing clearance for scanning beams since 1988 and an experimental scanning beam has been available at the LLUMC proton facility since 2001. The facility has a dedicated research room with a scanning beam and fast switching that allows its use during patient treatments. Dosimetric measurements and microdosimetric distributions for a scanned beam are presented and compared with beams produced with the conventional methods presently used in proton therapy.

• Authors: John F Dicello, Bradford B Gersey, Daila S Gridley, George B Coutrakon, David Lesyna, Vincent L Pisacane, James B Robertson, Reinhard W Schulte, Jerry D Slater, Andrew J Wroe, James M Slater
• Journal: Radiation protection dosimetry (Radiat Prot Dosimetry) Vol. 143 Issue 2-4 Pg. 513-8 (Feb 2011) ISSN: 1742-3406 [Electronic] England
• PMID: 21362697 (Publication Type: Journal Article)

Chemical References

• Protons

Topics

• Particle Accelerators
• Protons
• Radiometry
• Radiotherapy Dosage