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目的调查河南省某医院心脏介入手术致患者和放射工作人员的外照射剂量水平。方法患者入射体表剂量(ESD)和剂量面积乘积(DAP)由数字减影血管造影系统内置的剂量测量系统测得,对从事介入治疗的医护人员采用热释光剂量方法进行铅衣内、外剂量监测,统计并转换为年有效剂量。结果心脏介入手术致患者入射体表平均剂量为(1.86±2.36)Gy,剂量面积乘积平均为(19.8±26.2)mGy.m2,该医院心内科放射工作人员平均年有效剂量为(1.16±1.80)mGy/a。结论该医院心脏介入手术致患者受照剂量高于国内外其他调查结果,而放射工作人员受照剂量低于国内外其他调查结果。心脏介入手术中患者的放射损伤和放射防护应受到关注和重视。
Objective To investigate the dose level of external exposure of patients and radiologists in a hospital in Henan province. Methods The patient’s body surface dose (ESD) and dose area product (DAP) were measured by a dosimetry system built into the digital subtraction angiography system. The medical staff engaged in the interventional therapy were exposed to the lead, Dose monitoring, statistics and conversion to annual effective dose. Results The mean body surface dose (1.86 ± 2.36) Gy and mean dose area (19.8 ± 26.2) mGy.m2 were significantly higher in patients undergoing cardiac intervention. The average annual effective dose of cardiologists was (1.16 ± 1.80) mGy / a. Conclusion The hospitalized patients undergoing cardiac intervention have higher doses of radiation than other investigations at home and abroad, while radiation workers receive lower doses than other surveys at home and abroad. Radiation injury and radiation protection in patients undergoing cardiac intervention should receive attention and attention.