Would thyroid and breast shielding be beneficial in CT of the head?

被引：41

作者：

Beaconsfield, T ^{[1
]}

Nicholson, R ^{[1
]}

Thornton, A ^{[1
]}

Al-Kutoubi, A ^{[1
]}

机构：

[1] St Marys Hosp, Dept Radiol, London W2 1PG, England

来源：

EUROPEAN RADIOLOGY | 1998年 / 8卷 / 04期

关键词：

radiation dose reduction; head CT; breast; thyroid; protective lead shielding;

D O I：

10.1007/s003300050456

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：

Contrary to common perception, the advent of third- and fourth-generation scanners has lead to a significant increase in radiation dose to the patient per computed tomography (CT) head scan. With that in mind, a pilot study was designed with the objective of assessing the effectiveness of a dental-style protective bib in reducing the dose to the radiosensitive organs of the neck and thorax. Radiation doses over the thyroid gland and breast were measured with thermoluminenscent dosemeters and an ionization chamber respectively in 110 patients undergoing routine head scans. Half the patients wore the protective bib and collar. With lead protection, the thyroid measurements were reduced by an average of 45% and the breast measurements by an average of 76%. Similar results were seen in phantom measurements.

引用

页码：664 / 667

页数：4

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