DIRECT MEASUREMENTS OF SKIN, EYE LENS AND THYROID DOSE DURING PEDIATRIC BRAIN CT EXAMINATIONS

被引：7

作者：

Ploussi, Agapi ^{[1
]}

Stathopoulos, Ioannis ^{[1
]}

Syrgiamiotis, Vasileios ^{[2
]}

Makri, Triantafillia ^{[2
]}

Hatzigiorgi, Christiana ^{[2
]}

Platoni, Kalliopi ^{[1
]}

Carinou, Eleftheria ^{[3
]}

Efstathopoulos, Efstathios P. ^{[1
]}

机构：

[1] Univ Athens, Univ Gen Hosp Attikon, Sch Med, Dept Radiol 2, Athens 12462, Greece

[2] Childrens Hosp Agia Sophia, CT MRI Dept, Athens 11527, Greece

[3] GAEC, Attiki 15310, Greece

来源：

RADIATION PROTECTION DOSIMETRY | 2018年 / 179卷 / 03期

关键词：

COMPUTED-TOMOGRAPHY; RADIATION-EXPOSURE; CANCER-RISK; THRESHOLD; DOSIMETRY;

D O I：

10.1093/rpd/ncx251

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Pediatric brain computed tomography (CT) is identified as the most frequent CT examination in children. The aim of the study is the direct measurement of skin, eye lens and thyroid dose in pediatric patients during brain CT examinations. The study included 35 pediatric patients who underwent brain CT examinations. The patients were categorized in three age groups: Group A (age range: 0.8-1 years), Group B (age range: 2.0-4.9 years) and Group C (age range: 5.5-15.5 years). thermoluminescent dosimeters (TLDs) were placed on the eyes, the frontal region of the head, the mastoid apophysis and the thyroid gland. The skin dose was found 16.6 +/- 1.5, 38.8 +/- 5.1 and 41.7 +/- 9.4 mGy for Groups A, B and C, respectively. The mean dose for the eye lens was 10.5 +/- 3.3, 29.9 +/- 8.6 and 34.2 +/- 14.9mGy and for the thyroid 1.7 +/- 0.4, 2.4 +/- 0.5 and 1.9 +/- 0.4mGy for Groups A, B and C, respectively. In vivo dosimetry using TLDs proved to be an efficient method. Gantry tilting and patient's set-up seem to significantly affect eye lens dose.

引用

页码：199 / 205

页数：7

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