| SUN Jian-zhong,WANG Zhi-kang,ZHANG Wei-min,et al.Radiation doses in interventional radiology procedures[J].Chinese Journal of Radiological Medicine and Protection,2011,31(1):83-86 |
| Radiation doses in interventional radiology procedures |
| Received:December 02, 2009 |
| DOI：10.3760/cma.j.issn.0254-5098.2011.01.024 |
| KeyWords:Digital subtraction angiography Dose area product Cumulative air kerma Effective dose |
| FundProject:浙江省科学技术厅2010年度省级公益性技术应用研究计划项目(2010C33064);浙江省医药卫生科学研究基金(2009A094) |
| Author Name | Affiliation | | SUN Jian-zhong | Department of Radiology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China | | WANG Zhi-kang | Department of Radiology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China | | ZHANG Wei-min | Department of Radiology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China | | CAI Jin-song | Department of Radiology, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China |
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| Abstract:: |
| Objective To investigate the radiation doses for the patients undergoing interventional radiology and to analyze the dose-influencing factors. Methods The clinical data of 461 patients undergoing interventional radiology, including cerebral angiography(CEA), cerebral aneurysm embolism(CAE), superselective hepatic arterial chemoembolization (SHAC), coronary angiography(COA), percutaneous intracoronary stent implantation(PISI), cardiac radiofrequency catheter ablation (RFCA), and permanent cardiac pacemaker implantation(PCPI) were collected to observe the cumulative air kerma (CAK), dose area product (DAP), and fluoroscopy time, and effective dose was estimated using the conversion factors. Results The effective doses for CEA, CAE, SHAC, COA, PISI, RFCA, and PCPI were (0.33±0.20), (0.49±0.35), (6.92±4.19), (0.76±0.91), (2.35±1.47), (0.50±0.74), and (0.67±0.70) Sv, respectively. In 126 of the 416 patients (26%), the effective doses were greater than 1 Sv, and the effective doses of 10 person-times were greater than 10 Sv, all of which were observed in the patients undergoing SHAC. The CAK values for CEA, CAE, SHAC, COA, PISI, RFCA, and PCPI were (0.55±0.43), (1.34±1.11), (0.95±0.57), (0.32±0.31), (0.91±0.33), (0.16±0.22), and (0.15±0.14) Gy, respectively. The CAK values were greater than 1 Gy in 59 of the 461 patients (12.8%), greater than 2 Gy in 11 cases (2.4%), and greater than 3 Gy in 1 CEA cases and 1 CEA case, respectively. Conclusions There is a wide variation range in radiation dose for different procedures. As most interventional radiology procedure can result in clinically significant radiation dose to the patient, stricter dose control should be carried out. |
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