正确使用数字减影血管造影机减少介入手术中的辐射吸收剂量

目的:通过分析介入手术治疗中数字减影血管造影(DSA)参数,探讨减少辐射吸收剂量的途径及防护方法.方法:对随机选取的1200例各类介入手术操作时DSA机器的管电压、管电流和透视时间的资料进行统计分析,研究在介入手术治疗中影响吸收剂量的相关因素.结果:心脏冠状动脉支架术和室上速射频消融术所需透视时间最长,此时的管电流、管电压数值最大,因此应特别注意在行心脏介入手术治疗过程中的吸收剂量,并做好辐射防护.结论:合理应用DSA机器,正确使用缩光器、减少透视时间和每秒脉冲率是减少吸收剂量的有效方法

Reducing the absorbed dose of radiation in interventional procedures by using digital subtraction angiography machine correctly

Objective： To explore the approach of reducing the absorbed dose of radiation and radiation protection method by analyzing the parameters of digital subtraction angiography （DSA） machine in interventional operations. Methods： The data about the kilovoltage （kV）, milliampere （mA） and fluoroscopy time of DSA machines in 1200 cases of various interventional procedures were analyzed to investigate the factors affecting the absorbed dose of radiation in the interventional procedures. Results： The fluoroscopy time was the longest and the values of the kV and mA were the highest in the procedures of percutaneous intracoronary stent implantation and cardiac radiofrequency catheter ablation, so measures for radiation protection should be emphasized in order to reduce the absorbed dose of radiation in cardiac interventional procedure. Conclusion： Rational utilization of DSA machine in shortening fluoroscopy time and decreasing pulse rate per second can reduce the absorbed dose of radiation effectively in interventional operations.