CT radiation dose in children: a survey to establish age-based diagnostic reference levels in Switzerland

被引:139
作者
Verdun, Francis R. [1 ]
Gutierrez, Daniel
Vader, John Paul [2 ,3 ]
Aroua, Abbas
Alamo-Maestre, Leonor Trinidad
Bochud, Francois
Gudinchet, Francois
机构
[1] CHU Vaudois, Univ Inst Radiat Phys IRA DUMSC, CH-1007 Lausanne, Switzerland
[2] CHU Vaudois, Univ Inst Social & Prevent Med IUMSP DUMSC, CH-1005 Lausanne, Switzerland
[3] Univ Lausanne, CH-1005 Lausanne, Switzerland
关键词
computed tomography; paediatrics; radiation dosimetry; radiation protection; diagnostic reference levels;
D O I
10.1007/s00330-008-0963-4
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
This work aimed at assessing the doses delivered in Switzerland to paediatric patients during computed tomography (CT) examinations of the brain, chest and abdomen, and at establishing diagnostic reference levels (DRLs) for various age groups. Forms were sent to the ten centres performing CT on children, addressing the demographics, the indication and the scanning parameters: number of series, kilovoltage, tube current, rotation time, reconstruction slice thickness and pitch, volume CT dose index (CTDIvol) and dose length product (DLP). Per age group, the proposed DRLs for brain, chest and abdomen are, respectively, in terms of CTDIvol: 20, 30, 40, 60 mGy; 5, 8, 10, 12 mGy; 7, 9, 13, 16 mGy; and in terms of DLP: 270, 420, 560, 1,000 mGy cm; 110, 200, 220, 460 mGy cm; 130, 300, 380, 500 mGy cm. An optimisation process should be initiated to reduce the spread in dose recorded in this study. A major element of this process should be the use of DRLs.
引用
收藏
页码:1980 / 1986
页数:7
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