|
|
|
| A study on the effective doses received by patients undergone esophageal scanning by using single-source and dual-source CT |
| YU Jinyu1,2, ZHANG Hongwei3, ZHANG Lin2, YANG Shuhui2, GAO Zeyu2, MIN Nan2, ZHU Jianguo2 |
1. School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250062 China;
2. Institute of Radiation Medicine, Shandong Academy of Medical Sciences;
3. Blood Center of Shandong Province |
|
|
|
|
Abstract Objective By aid of the phantom experiments, this study aims to investigate the effective doses received by patients undergone esophageal scanning by using single-source and dual-source CT in different scanning modes.Methods According to ICRP 103 publication, TLDs were placed in the 38 target holes of different organs or tissues of the phantom to measure the absorbed doses. The experiments were performed in the same scan condition by the single-source 64 slices CT, the dual-source 64 slices CT with single energy mode and the dual-source 64 slices CT with dual-energy mode. The effective dose was calculated based on the measured organ or tissue doses and their corresponding tissue weighting factors.Results The ranges of organ or tissue absorbed doses were 0.126~329.7 mGy, 0.114~317.8 mGy and 0.123~321.2 mGy for dual-source 64 slices CT in dual-energy mode, dual-source 64 slices CT in single energy mode and single-source 64 slices CT, respectively. The lowest organ adsorbed dose was found in gonad and the highest was in bone tissue. The effective doses were estimated to be 26.9 mSv, 26.1 mSv and 26.8 mSv for the three groups, respectively.Conclusion The effective doses of three scan modes are nearly the same. In this regard, in selecting the different modes for esophageal scanning, the difference of patient's dose can be ignored. Meanwhile the out-field of sensitive organ or tissue should be protected with the purpose of reducing the organ or tissue dose and the effective dose.
|
|
Received: 28 January 2018
|
|
|
|
|
|
[1] Global Burden of Disease Cancer Collaboration,Fitzmaurice C, Dicker D et, al. The global burden of cancer 2013[J]. JAMA Oncol, 2015, (1):505-527.
[2] 钟惠铃,张耀森.食道癌采用不同术式治疗的临床效果探析[J].齐齐哈尔医学院学报, 2016, 37(8):1013-1014.
[3] 于金玉,孙大伟,宋晓瑜,等.CT多平面重组技术(MPR)对于食管癌淋巴结术前评估的意义[J].医学影像学杂志, 2018, (1):34-38.
[4] 高林峰,郑钧正,卓维海,等.医用X射线CT主要检查类型所致成年受检者剂量研究[J].辐射防护, 2013, 33(2):74-81.
[5] 闵楠,刘伟,张琳,等.仿真人体模型测量腹部CT受检者受照剂量研究[J].中国辐射卫生, 2016, 25(6):730-732.
[6] 郑玲,顾海峰,杨刚,等.双源CT成像技术及其临床应用的新进展[J]. 医学研究生学报,2008,21(4):404-407, 411.
[7] 顾海峰,周长圣,李林,等.辐射剂量与图像质量的对比研究[J].医学研究生学报, 2014, 27(5):502-506.
[8] 李士骏.电离辐射计量学基础[M].苏州:苏州大学出版社, 2008. 41-65.
[9] UNSCEAR. UNSEAE 2008 Report Sources and Effects of Ionizing Radiation,Vol.Ⅰ[M].NewYork:UN,2010.
[10] 宋彬.等闲识得双能面万紫千红总是春·述评·-CT能量成像前景展望[J].放射学实践, 2013, 28(12):1190-1191.
[11] 李扬,时高峰,王琦,等.双期增强最佳单能量图像在食管癌诊断中的价值[J].临床放射学杂志, 2014, 33(10):1588-1592.
[12] 吴镭,赵林伟,陈明.双源CT双能量扫描对肝脏肿瘤诊断的价值研究[J].影像研究与医学应用, 2017, 1(16):9-12.
[13] 刘彪,陈泉桦,罗汉传,等.双源CT双能扫描在胰腺肿瘤诊断的临床应用[J].中国CT和MRI杂志, 2017, 15(7):95-97.
[14] Slovis, TL. The ALARA concept in pediatric CT:myth or reality[J].Radiology, 2002, 223(1):5-6.
[15] Willis, CE, Slovis, TL. The ALARA concept in radiographic dose reduction[J].Radiol Technol, 2004, 76(2):150-152.
[16] 刘建伟,刘威武,朱万安.256层CT在心脏疾病诊断中乳腺的受照剂量研究[J].中国辐射卫生, 2012, 21(2):141-142.
[17] 闵楠,梁绵英,李海亮.经皮冠状动脉介入治疗中患者受照剂量调查[J].中国职业医学, 2010, 37(3):208-210.
[18] 王萱,薛华丹,刘炜,等.双源CT头颈部双能量血管成像的图像质量和辐射剂量[J].中国医学科学院学报, 2010, 32(6):619-623.
[19] 顾海峰,周长圣,李林,等.炫速双源CT与普通双源CT头部血管双能量成像辐射剂量与图像质量的对比研究[J].医学研究生学报, 2014, 27(5):502-506.
[20] 杜广芬,李海亮,韩中山,等.多层螺旋CT低剂量扫描的临床应用现状[J].中国辐射卫生, 2012, 21(2):246-248. |
|
|
|
