Radiation effective dose received by performing CT-guided interventional procedures in the patients with liver cancer

doi:10.3969/j.issn.1006-7795.2016.01.019

Abstract

Abstract: Objective Totally To explore the effective radiation dose taken during 5 kinds CT-guided interventional procedures to the patients with liver cancer. Methods Totally 390 case-time inspection records from Sept. to Dec. 2014, of who were diagnosed and treated by the CT-guided interventional procedures, were retrospectively analyzed. The interventional procedures include liver biopsy, chemical ablation, radiofrequency ablation, microwave ablation, and cryoablation. The type of CT-guided interventional procedure, the scanning time, the exposure dose(total mAs),volume-weighted CT dose index(CTDIvol) and the total does-length product (DLP) were recorded. Effective dose(ED) was calculated. Results The average scanning time of liver biopsy, chemical ablation, radiofrequency ablation, microwave ablation, and cryoablation were (49.7±23.4)s,(88.9±21.3)s,(89.5±40.6)s,(106.0±43.5)s and (87.7±27.6)s. The EDs of the five procedures were (19.5±14.9) mSv,(30.0±10.2) mSv,(34.2±17.6) mSv,(38.1±19.9) mSv and (33.1±13.1) mSv, respectively. The EDs in biopsy procedure were significantly lower than those in ablation procedures. It was represented that the ED are positively correlative with the tube current, the scanning time, the exposure dose and the CTDIvol. Conclusion The effective radiation dose of single CT-guided interventional procedure is relatively lower. Therefore the risk of radiational damage and subsequent complications is lower as well. It should be paid attention that the cumulated effective dose for several times of CT-guided interventional treatments may exceed the acceptable range.

Key words: computed tomography, interventional treatment, radiation dose, effective dose

CLC Number:

Fang Da, Cui Xiongwei, Li Jinghua, Zhao Liying, Zheng Jiasheng, Cui Shichang. Radiation effective dose received by performing CT-guided interventional procedures in the patients with liver cancer[J]. Journal of Capital Medical University, 2016, 37(1): 97-101.

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URL: https://journal03.magtech.org.cn/Jweb_sdykdxxb/EN/10.3969/j.issn.1006-7795.2016.01.019

https://journal03.magtech.org.cn/Jweb_sdykdxxb/EN/Y2016/V37/I1/97

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