Investigation of the usefulness of Monte Carlo simulation in electron beam therapy using body surface lead cutout
Creators
- 1. Juntendo University Shizuoka Hospital, Department of Radiology, Izunokuni, Shizuoka (Japan)
Description
The purpose of this study was to understand the PDD and OAR during electron beam therapy using lead cutout on the body surface. The Monte Carlo code PHITS version 3.24 was used to simulate PDD and OAR. The simulation results were compared with actual measurements using a silicon diode detector to evaluate the validity of the simulation results. The simulated PDD and OAR parameters of the linac agreed with the measured values within 2 mm. When the lead cutout on the body surface was used, all parameters except for R100 agreed with the measured values within 2 mm. The cutout sizes of the broad-beam square irradiation fields were 3 cm for 6 MeV, 5 cm for 12 MeV, and 8 cm for 18 MeV when the lead cutout on the body surface was used. The Monte Carlo simulation was useful for understanding the PDD and OAR of the lead cutout irradiation fields, which are difficult to measure. (author)
Abstract (Japanese)
体表面鉛カットアウトを使用した電子線治療時のPDD,OARを把握すること.モンテカルロコードPHITS version 3.24を使用しPDDおよびOARのシミュレーションを行った.また,その妥当性を評価するためシリコンダイオード検出器を用いて実測を行い比較した.リニアックのシミュレーションによるPDDおよびOARのパラメータは実測値と2mm以内で一致した.体表面鉛カットアウトを使用した場合も,R100以外はおおむね2mm以内で一致した.体表面鉛カットアウトを使用した場合,ブロードビームとなる正方形照射野のカットアウトサイズは6MeVが3cm,12MeVが5cm,18MeVが8cmであった.モンテカルロシミュレーションは,測定が困難な体表面鉛カットアウト照射野のPDD,OARを把握するために有用であった.(著者)Additional details
Additional titles
- Original title (Japanese)
- 体表面鉛カットアウトを使用した電子線治療におけるモンテカルロシミュレーションの有用性の検討
Identifiers
Publishing Information
- Journal Title
- Nippon Hoshasen Gijutsu Gakkai Zasshi (Online)
- Journal Volume
- 80
- Journal Issue
- 2
- Series
- 雑誌名:日本放射線技術学会雑誌
- Journal Page Range
- p. 175-187
- ISSN
- 1881-4883
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 55074640
- Subject category
- S62: RADIOLOGY AND NUCLEAR MEDICINE;
- Descriptors DEI
- DEPTH DOSE DISTRIBUTIONS; ELECTRON BEAMS; ELECTRON SOURCES; EXTERNAL BEAM RADIATION THERAPY; LEAD; LINEAR ACCELERATORS; MONTE CARLO METHOD; P CODES; PHANTOMS; SHIELDING MATERIALS
- Descriptors DEC
- ACCELERATORS; BEAMS; CALCULATION METHODS; COMPUTER CODES; ELEMENTS; LEPTON BEAMS; MATERIALS; MEDICINE; METALS; MOCKUP; NUCLEAR MEDICINE; PARTICLE BEAMS; PARTICLE SOURCES; RADIATION DOSE DISTRIBUTIONS; RADIATION SOURCES; RADIOLOGY; RADIOTHERAPY; SPATIAL DOSE DISTRIBUTIONS; STRUCTURAL MODELS; THERAPY
Optional Information
- Notes
- 17 refs., 14 figs., 2 tabs.