Shoshtary Akram, Pirayesh Islamian Jalil, Asadinezhad Mohsen, Sadremomtaz Alireza
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Glob J Health Sci. 2015 Nov 18;8(7):185-94. doi: 10.5539/gjhs.v8n7p185.
Interventional procedures, cine acquisitions and operation of fluoroscopic equipment in high-dose fluoroscopic modes, involve long fluoroscopic times which can lead to high staff doses. Also, Coronary angiography (CA) procedures require the cardiologist and assisting personnel to remain close to the patient, which is the main source of scattered radiation. Thus, radiation exposure is a significant concern for radiation workers and it is important to measure the radiation doses received by personnel and evaluate the parameters concerning total radiation burden. In this research, we investigated radiation doses to 10 cardiologists performing 120 CA procedures. Using thermo luminescent dosimeters doses to the wrists, thyroid and eyes per procedure were measured. Based on the measured dose values, maximum doses to the Left wrist, Right wrist, thyroid and eyes of cardiologist were measured 241.45 µSv, 203.17 µSv, 78.21 µSv and 44.58 µSv, respectively. The results of this study indicate that distance from the source, use of protective equipment's, procedure complexity, equipment performance, and cardiologist experience are the principal exposure-determining variables. It can be conclude that if adequate radiation protection approaches have been implemented, occupational dose levels to cardiologists would be within the regulated acceptable dose limits.
介入程序、电影采集以及在高剂量透视模式下操作透视设备，都涉及较长的透视时间，这可能导致工作人员接受高剂量辐射。此外，冠状动脉造影（CA）程序要求心脏病专家和辅助人员靠近患者，这是散射辐射的主要来源。因此，辐射暴露是辐射工作人员的一个重大担忧，测量人员接受的辐射剂量并评估与总辐射负担相关的参数非常重要。在本研究中，我们调查了10名进行120例CA程序的心脏病专家所接受的辐射剂量。使用热释光剂量计测量了每次程序手腕、甲状腺和眼睛所接受的剂量。根据测量的剂量值，心脏病专家左手腕、右手腕、甲状腺和眼睛所接受的最大剂量分别为241.45微希沃特、203.17微希沃特、78.21微希沃特和44.58微希沃特。本研究结果表明，与源的距离、防护设备的使用、程序复杂性、设备性能以及心脏病专家的经验是决定暴露剂量的主要变量。可以得出结论，如果实施了充分的辐射防护措施，心脏病专家的职业剂量水平将在规定的可接受剂量限值内。
