SHIELDING CONSIDERATIONS FOR AN OPERATING-ROOM BASED INTRAOPERATIVE ELECTRON RADIOTHERAPY UNIT

被引：11

作者：

MILLS, MD

ALMOND, PR

BOYER, AL

OCHRAN, TG

MADIGAN, W

RICH, TA

DALLY, EB

机构：

[1] UNIV TEXAS,MD ANDERSON HOSP & TUMOR INST,CTR CANC,DEPT RADIAT PHYS,HOUSTON,TX 77030

[2] JAMES GRAHAM BROWN CANC CTR,SCH MED,DEPT RADIAT BIOL,LOUISVILLE,KY 40292

[3] UNIV TEXAS,MD ANDERSON HOSP & TUMOR INST,CTR CANC,DEPT CLIN RADIOTHERAPY,HOUSTON,TX 77030

[4] SIEMENS MED LAB INC,WALNUT CREEK,CA 94596

来源：

INTERNATIONAL JOURNAL OF RADIATION ONCOLOGY BIOLOGY PHYSICS | 1990年 / 18卷 / 05期

关键词：

Electrons; Intraoperative radiotherapy; Linear accelerator; Radiation leakage;

D O I：

10.1016/0360-3016(90)90460-2

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

The leakage radiation characteristics of a dedicated intraoperative radiotherapy linear accelerator have been measured on a machine designed to minimize the shielding required to allow it to be placed in an operating room suite. The scattering foil design was optimized to produce a flat beam for the field sizes employed while generating minimal bremsstrahlung contamination over the available energy range. More lead shielding was used in the treatment head than is used in conventional accelerators. A small amount of borated polyethylene shielding was also employed since neutron production was present at measurable levels. The room shielding installed in the operating room was demonstrated to be adequate to treat at least 20 patients each month to an average dose of 20 Gy. The worst case exposure was found to be 73% maximum permissible exposure. Administrative control was required for adjoining areas when calibrations and maintenance were performed. © 1990.

引用

页码：1215 / 1221

页数：7

共 7 条

[1] DOSIMETRY, FIELD SHAPING AND OTHER CONSIDERATIONS FOR INTRAOPERATIVE ELECTRON THERAPY [J].