COMPARATIVE MEASUREMENTS OF BONE-MARROW DOSE IN QUANTITATIVE COMPUTED-TOMOGRAPHY (QCT), DUAL PHOTON X-RAY (DPX) AND CONVENTIONAL LUMBAR SPINE X-RAY

被引：4

作者：

KASPERCZYK, A

FREYSCHMIDT, J

WELL, JC

SEEGER, W

机构：

来源：

FORTSCHRITTE AUF DEM GEBIETE DER RONTGENSTRAHLEN UND DER NEUEN BILDGEBENDEN VERFAHREN | 1991年 / 155卷 / 02期

关键词：

BONE DENSITY MEASUREMENT; BONE MARROW DOSE; QCT; DPX;

D O I：

10.1055/s-2008-1033237

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：

One of the issues in the discussion on the best method for measuring the bone mineral content is the relevance of the applied dose. We used highly sensitive thermoluminescent dosimeters (TLD) to directly compare bone marrow doses in a human phantom. DPX gave a bone marrow dose in the lumbar spine of 4-mu-Gy, in QCT the dose corrected to the same amount of irradiated marrow was about 1 mGy. This value is in the same range as conentional a.p. plus lateral view x-rays of the lumbar spine. Corrected to the total body dose, the QCT dose is as low as 10% of the yearly background irradiation. It should therefore be radiobiologically irrelevant.

引用

页码：155 / 158

页数：4

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