Charged photoparticle production in tissue during radiotherapy

被引：5

作者：

Allen, PD

Chaudhri, MA

机构：

[1] AUSTIN HOSP,DEPT PHYS MED,HEIDELBERG,VIC 3084,AUSTRALIA

[2] UNIV MELBOURNE,PARKVILLE,VIC 3052,AUSTRALIA

来源：

MEDICAL PHYSICS | 1997年 / 24卷 / 06期

关键词：

radiation therapy; photonuclear reactions; dosimetry;

D O I：

10.1118/1.598004

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Photon-induced proton and alpha particle production in tissue is estimated for the photon energy range from 3 to 28 MeV, using the authors' previously established methods. It is shown that charged particle emission exceeds neutron emission for energies greater than II MeV by a factor that reaches a maximum of 7.0 at 17 MeV. Due to uncertainties in the source data this maximum value should be regarded as indicative only. Above 17 MeV the neutron yield rises sharply and the ratio of charged particle emission to neutron emission declines to values of 3.0 and 1.7 at 20 and 28 MeV, respectively. (C) 1997 American Association of Physicists in Medicine.

引用

页码：837 / 839

页数：3

共 10 条

[1] PHOTONEUTRON DOSE IN SOFT-TISSUE PHANTOMS IRRADIATED BY 25 MV X-RAYS [J].