不同模式下C形臂X射线机在腰椎神经根管造影术中产生的辐射剂量比较  

Comparison of radiation doses between different modes of C-arm X-ray apparatus applied to lumbar nerve root canal radiography

作　　者：伍亮[1] 张家立[1] 杨光[1] 莫怡[1] 付拴虎 

机构地区：[1]广西中医药大学第一附属医院骨一科,南宁市530023

出　　处：《广西医学》2015年第8期1082-1084,共3页Guangxi Medical Journal

基　　金：广西科学研究与技术开发计划(桂科攻1140003B-56)

摘　　要：目的对比C形臂X射线机脉冲透视和高对比度透视两种模式下术者在单节段腰椎神经根管造影术中所接受的有效辐射剂量,以探讨术中更为安全的C形臂X射线机透视模式。方法单节段腰椎管狭窄症患者46例,按随机数字表法分为A组24例、B组22例,分别在C形臂X射线机高对比度透视和脉冲透视模式下行腰椎神经根管造影,所有造影操作均由同一名医生完成。记录造影术操作时间及使用C形臂X射线机的透视时间,测量施术者右手背、左前胸及颈部3个部位的有效辐射剂量。结果两组造影术平均操作时间及平均透视时间的比较,差异无统计学意义(P>0.05)。A组术者右手背、左前胸及颈部平均有效辐射剂量分别为(0.142±0.012)m Sv、(0.066±0.011)m Sv、(0.031±0.005)m Sv,B组术者右手背、左前胸及颈部平均有效辐射剂量分别为(0.102±0.009)m Sv、(0.059±0.005)m Sv、(0.030±0.004)m Sv,其中B组术者右手背及左前胸的平均有效辐射剂量均低于A组(P<0.05),而两组术者颈部平均有效辐射剂量的比较,差异无统计学意义(P>0.05)。结论在腰椎神经根管造影术中,脉冲透视模式对术者产生的辐射剂量低于高对比度透视模式,更为安全。Objective To compare the effective radiation doses for operators during the single segmental lumbar nerve root canal radiography between pulsed fluoroscopy mode and high contrast fluoroscopy mode of C-arm X-ray apparatus so as to explore the safer fluoroscopy mode of C-arm X-ray apparatus during the operation.Methods Forty-six patients with single segmental lumbar spinal stenosis were randomly divided into Group A（n=24） and Group B（n=22）.And the patients of group A and group B received lumbar nerve root canal radiography under high contrast fluoroscopy mode and pulse fluoroscopy mode of C-arm X-ray apparatus respectively.All cases were performed by the same operator.The operative time and fluoroscopy time were recorded,and the effective radiation doses of right opisthenar, left chest and neck were measured for the operator.Results There was no statistical difference in the mean operation time or mean fluoroscopy time between two groups（P〉0.05）.The mean effective radiation doses of right opisthenar,left chest and neck in Group A were （0.142 ±0.012）mSv,（0.066 ±0.011）mSv and （0.031 ±0.005）mSv,respectively,while in Group B were （0.102 ±0.009）mSv, （0.059 ±0.005） mSv and （0.030 ±0.004） mSv,respectively.The mean effective radiation doses of right opisthenar and left chest in Group B were lower than those in Group A（P〈0.05）.There was no statistical difference in the mean effective radiation dose of neck between two groups（P〉0.05）.Conclusion During the lumbar nerve root canal radiography,the pulse fluoroscopy mode is a safer mode and produces lower radiation dose for operator compared to the high contrast fluoroscopy mode.

关 键 词：腰椎管狭窄症 腰椎神经根管造影 C形臂X射线机 有效辐射剂量 脉冲透视模式 高对比度透视模式 

分 类 号：R681.5[医药卫生—骨科学]