Effect of tube current modulation for dose estimation using a simulation tool on body CT examination

被引：9

作者：

Kawaguchi, Ai ^{[1
,2
]}

Matsunaga, Yuta ^{[2
,3
]}

Kobayashi, Masanao ^{[4
]}

Suzuki, Shoichi ^{[5
]}

Matsubara, Kosuke ^{[6
]}

Chida, Koichi ^{[2
]}

机构：

[1] Toyota Mem Hosp, Dept Radiol, Toyota, Aichi 4710821, Japan

[2] Tohoku Univ, Grad Sch Med, Dept Radiol Technol, Aoba Ku, Sendai, Miyagi 9808575, Japan

[3] Nagoya Kyoritsu Hosp, Dept Imaging, Toyota, Aichi 4540933, Japan

[4] Fujita Hlth Univ Hosp, Dept Radiol, Toyota, Aichi 4701192, Japan

[5] Fujita Hlth Univ, Sch Hlth Sci, Toyota, Aichi 4701192, Japan

[6] Kanazawa Univ, Fac Hlth Sci, Dept Quantum Med Technol, Kanazawa, Ishikawa 9201192, Japan

来源：

RADIATION PROTECTION DOSIMETRY | 2015年 / 167卷 / 04期

关键词：

LENGTH PRODUCT; ABDOMINAL CT;

D O I：

10.1093/rpd/ncu340

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The purpose of this study was to evaluate the effect of tube current modulation for dose estimation of a body computed tomography (CT) examination using a simulation tool. The authors also compared longitudinal variations in tube current values between iterative reconstruction (IR) and filtered back-projection (FBP) reconstruction algorithms. One hundred patients underwent body CT examinations. The tube current values around 10 organ regions were recorded longitudinally from tube current information. The organ and effective doses were simulated by average tube current values and longitudinal modulated tube current values. The organ doses for the bladder and breast estimated by longitudinal modulated tube current values were 20 % higher and 25 % lower than those estimated using the average tube current values, respectively. The differences in effective doses were small (mean, 0.7 mSv). The longitudinal variations in tube current values were almost the same for the IR and FBP algorithms.

引用

页码：562 / 568

页数：7

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