Published May 2004
| Version v1
Report
Study of formation of flat field by particle radiations
Creators
- 1. Tsukuba Univ., Ibaraki (Japan). Inst of Applied Physics
- 2. National Inst. of Radiological Sciences, Chiba (Japan)
Description
Insertion of a bolus disturbs the dose distribution when a fixed modulation method is used for large field formation. This is due to the different lateral spreads of dose distributions of pencil beams passing through the different thicknesses of the bolus at the same water-equivalent depths. A bi-material bolus is used to control the lateral spreads at the same depths while keeping the range losses at the design values. Improvement of the field flatness has been observed for a 290 MeV/u carbon beam and a 160 MeV proton beam. (authors)
Additional details
Publishing Information
- Imprint Title
- 2003 annual report of the research project with heavy ions at NIRS-HIMAC
- Imprint Pagination
- 339 p.
- Journal Page Range
- p. 280-281
- Report number
- NIRS-M--173
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 36050072
- Subject category
- S62: RADIOLOGY AND NUCLEAR MEDICINE;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- CARBON IONS; DEPTH DOSE DISTRIBUTIONS; IONIZATION CHAMBERS; PROTON BEAMS; RADIOTHERAPY
- Descriptors DEC
- BEAMS; CHARGED PARTICLES; IONS; MEASURING INSTRUMENTS; MEDICINE; NUCLEAR MEDICINE; NUCLEON BEAMS; PARTICLE BEAMS; RADIATION DETECTORS; RADIATION DOSE DISTRIBUTIONS; RADIOLOGY; SPATIAL DOSE DISTRIBUTIONS; THERAPY
Optional Information
- Secondary number(s)
- HIMAC--083