モノブロック原体絞りとその線量分布 : 治療計画用電算機への応用

概要

論文の詳細を見る
Delivering enough of a dose to a target tumor and avoiding unnecessary irradiation of the surrounding normal tissues as possible are of prime importance in radiotherapy. The most suitable treatment to obtain the therapentic ratio should be pursued. For this purpose, multilefdiaphragm conformation radiotherapy has been applied. In 1981,we purchased a NELAC-1018 linear accelerator and developed the mono-block conformation system controlled micro computer in combination with NEC staff. This system without a multileafdiaphragm and a cam is economical, however, the dose distribution of this system is confined only to an oval configuration. The program to represent the dose distribution of a mono-block conformation radiotheraphy using radiation planning computer MODULEX was made. In this report, the mono-block conformation system and its dose distribution are discussed. The dose distribution calculated by MODULEX was compared with the measured dose (Film technique, TLD and Ionisation chamber). 1) Dose distribution of 10MV X-ray mono-block conformation system was homogeneous in the target area. 2) Calculated dose was very close to measured dose. Calculated dose was precise enough to utilize for routine radiation planning.
公益社団法人日本放射線技術学会の論文
1984-03-01