A simple method for evaluation of half-value layer variation in CT equipment

被引：16

作者：

Maia, AF ^{[1
]}

Caldas, LVE ^{[1
]}

机构：

[1] IPEN CNEN SP, BR-05422970 Sao Paulo, Brazil

来源：

PHYSICS IN MEDICINE AND BIOLOGY | 2006年 / 51卷 / 06期

关键词：

D O I：

10.1088/0031-9155/51/6/016

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Tandem systems, each formed by a pencil ionization chamber with and without a specific covering, were developed and tested in standard radiation beams. These systems were designed to be used in computed tomography radiation beams, where the half-value layer (HVL) determination is not an easy task. The behaviour of the tandem systems in diagnostic radiology showed the possibility of their use to confirm HVL values previously determined by the conventional HVL measurement method in quality control programmes. These systems also have other advantages: low cost, easy application and quick measurement procedure.

引用

页码：1595 / 1601

页数：7

共 16 条

[1]

[Anonymous], 1995, GUID EXPR UNC MEAS

[2]

[Anonymous], 1994, 61267 IEC

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