ESTIMATE OF ORGAN RADIATION ABSORBED DOSES IN CLINICAL CT USING THE RADIATION TREATMENT PLANNING SYSTEM

被引：4

作者：

Fujibuchi, Toshioh ^{[1
,2
]}

Funabashi, Nobusada ^{[3
]}

Hashimoto, Masatoshi ^{[4
]}

Kato, Hideyuki ^{[5
]}

Kurokawa, Masayuki ^{[5
]}

Deloar, Hossain M. ^{[6
]}

Kunieda, Etsuo ^{[7
]}

Komuro, Issei ^{[3
]}

Sakae, Takeji ^{[1
]}

机构：

[1] Univ Tsukuba, Grad Sch Comprehens Human Sci, Tsukuba, Ibaraki 3058575, Japan

[2] Ibaraki Prefectural Univ, Sch Hlth Sci, Dept Radiol Sci, Ami, Ibaraki 3000394, Japan

[3] Chiba Univ, Grad Sch Med, Dept Cardiovasc Sci & Med, Chuou Ku, Chiba 2608687, Japan

[4] Univ Tokyo, Grad Sch Med, Div Radiol & Biomed Engn, Bunkyo Ku, Tokyo 1138655, Japan

[5] Chiba Univ Hosp, Dept Radiol, Chuou Ku, Chiba 2608687, Japan

[6] Christchurch Hosp, Dept Med Phys & Bioengn, Christchurch, New Zealand

[7] Tokai Univ, Sch Med, Isehara, Kanagawa 2591193, Japan

来源：

RADIATION PROTECTION DOSIMETRY | 2010年 / 142卷 / 2-4期

关键词：

COMPUTED-TOMOGRAPHY; RADIOLOGY; MODEL; ENERGY; PCXMC;

D O I：

10.1093/rpd/ncq188

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Organ absorbed doses in computed tomography (CT) scans can be measured with anatomical phantoms but not inside the human body. In this study, a straightforward method was investigated to estimate organ doses in clinical CT using the radiation treatment planning system (RTPS) and compared them with experimental results of photoluminescence dosemeters (PLD). In a heterogeneous phantom, the average difference between PLD and RTPS values were -5.0 % for the body and 7.1 % for the lung. Using CT data, organ doses in 30 clinical cases were then calculated. There was a significant inverse correlation between the calculated values of organ doses and body mass index (BMI, correlation coefficients (r) = -0.69 (whole body), -0.80 (right lung), -0.81 (left lung), -0.76 (spinal cord), -0.74 (vertebra bone), -0.74 (heart), and -0.79 (oesophagus), all p < 0.01). An RTPS can be a simple and useful tool for estimating equivalent doses inside the human body, during whole-body CT scans.

引用

页码：174 / 183

页数：10

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