| Xu Hui,Xue Xian,Zhao Hongfeng,Wang Jianchao,Wei Kedao,Yue Baorong.Peak skin dose measurements in two cardiac interventional procedures using radiochromic film[J].Chinese Journal of Radiological Medicine and Protection,2014,34(4):302-305 |
| Peak skin dose measurements in two cardiac interventional procedures using radiochromic film |
| Received:June 10, 2013 |
| DOI：10.3760/cma.j.issn.0254-5098.2014.04.017 |
| KeyWords:Cardiac interventional Cumulative dose Peak skin dose Deterministic effects |
| FundProject:卫生行业科研专项（201002009） |
| Author Name | Affiliation | E-mail | | Xu Hui | National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Xue Xian | National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Zhao Hongfeng | 北京市朝阳区疾病预防控制中心 | | | Wang Jianchao | National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Wei Kedao | National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Yue Baorong | National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | bryue@163.com |
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| Abstract:: |
| Objective To measure the peak skin dose (PSD) in two cardiovascular interventional procedures, including coronary angiography (CA) and percutaneous transluminal coronary angioplasty (PTCA) using radiochromic film. Methods Gafchromic XR-RV3 film was selected to measure PSD in two hospitals. The films were placed on the table underneath the patient during interventional surgery. The kV, mA, fluoroscopy time, dose-area product (DAP), and cumulative dose at reference point and other relevant information were recorded for all cases. Using the Epson V750 flatbed scanner for scanning and analyzing film,FilmQA software was chosen to analyze the pixel value of red, green and blue color channels. The PSD was determined using red channel data. The correlation and linear regression analysis between PSD and device-displayed parameters was carried out. Results PSD were measured using XR-RV3 film for 26 CA and 19 CA+PTCA procedures. For CA procedures, maximum fluoroscopy time, cumulative dose and DAP were 17.62 min, 1 498.50 mGy and 109.68 Gy ·cm2, respectively. The maximum PSD was 361.20 mGy. However, for CA+PTCA procedures, maximum fluoroscopy time, cumulative dose and DAP were 64.48 min, 6 976.20 mGy and 5 336.00 Gy ·cm2, respectively. One patient with CA+PTCA procedures was found to have received the PSD value more than 2 Gy, up to 2 195.70 mGy. DAP was found to be a good indicator (R2=0.815,P<0.05) of PSD for CA procedure, and correlated with cumulative dose (R2=0.916,P<0.05) for CA+PTCA procedures. Conclusions The PSD value of some patients in cardiac interventional procedures would exceed 2 Gy, the threshold of deterministic effects recommended by ICRP. The dose-related parameters value showed on DSA device can only used to estimate PSD roughly. Using XR-RV3 film accurate measurement of the PSD in interventional projects is a very fast and effective method. |
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