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| The Study of Radiation Exposure to Patients During ERCP |
| WANG Tao1,2,3, NIU Fei2, YANG Shu-hui2, ZHANG Lin2, MIN Nan2, SONG Gang2, ZHU Jian-guo2 |
1. School of Medicine and Life Sciences, University of Jinan Shandong Academy of Medical Sciences, Jinan 250062 China;
2. The Radiation Medical Institute, Shandong Academy of Medical Sciences;
3. Department of MRI, The Fifth People's Hospital of Jinan |
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Abstract Objective To provide basic data for estimating patient dose, dose area product was measured by simulating ERCP operation using the related parameters of field investigation and water phantom.Methods Measure the dose area product date by using the related parameters (mainly fluoroscopy time and photo frames) of field investigation and replacing human body with water model.Results A total of 56 cases of ERCP operation were investigated, including common bile duct stone extraction in 49 cases (87.5%) and stent placement in 7 cases (12.5%). The range of fluoroscopy time was 1.3~27.3 min, the average was 6.9±6.0 min;The range of photo frames was 0~14, the average frame was 4±3; The range of DAP date was3.2~58.5 Gy·cm2, the average was 15.0±12.9Gy·cm2.Conclusion There was a good correlation between fluoroscopy time and DAP, r=0.999, P<0.01; The proportion of fluoroscopy time was 96% in ERCP. The fluoroscopy time of biliary stent implantation was longer than that of lithotomy of common bile duct. Accordingly, the DAP of biliary stent placement was slightly higher than that of common bile duct stone extraction. The difference of the complexity of the operation and the proficiency of operator lead to the significant difference of DAP.
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Received: 11 February 2017
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