MOSFET dosimetry for radiation dose assessment of bismuth shielding of the eye in children

被引：52

作者：

Mukundan, Srinivasan, Jr. ^{[1
]}

Wang, Page Inman ^{[1
]}

Frush, Donald P. ^{[1
]}

Yoshizumi, Terry ^{[1
]}

Marcus, Jeffrey ^{[1
]}

Kloeblen, Emily ^{[1
]}

Moore, Meredith ^{[1
]}

机构：

[1] Duke Univ, Med Ctr, Dept Radiol, Durham, NC 27705 USA

来源：

AMERICAN JOURNAL OF ROENTGENOLOGY | 2007年 / 188卷 / 06期

关键词：

bismuth shielding; CT; dosimetry; eye; head and neck imaging; pediatric imaging; radiation dose; safety;

D O I：

10.2214/AJR.06.1146

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：

OBJECTIVE. The purpose of our study was to measure radiation dose to the orbit during pediatric cranial CT with and without bismuth shielding using a novel dosimetry system. Cranial CT was performed on a pediatric anthropomorphic phantom, with and without bismuth eye shields. A solid-state metal oxide semiconductor field effect transistor ( MOSFET) dosimeter was used to obtain real-time dose measurements. CONCLUSION. Bismuth shielding reduced radiation dose to the eye by up to 42%; shield artifact fell outside the diagnostic area of interest.

引用

页码：1648 / 1650

页数：3

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