论文部分内容阅读
目的评价彩色多普勒血流图(CDFI)与增强磁共振血管造影(CEMRA)诊断肾动脉狭窄(RAS)的价值。方法84例患者行CDFI初步筛查确定肾动脉及其3、4级分支情况;55例行MRA检查明确肾动脉病变,38例行DSA检查。应用TESTBOLUS先以2mL/s试注射测定肾动脉最佳显示时间,再从前臂静脉注射造影剂Magnevist 20 mL,延时20～35s行双肾动脉容积数据扫描;层厚1.1mm,连续共4次;源像输入RON-ADO2004A工作站作三维重建。结果发现左、右RAS各为18、30例,轻、中、重度狭窄各26、15、7例;5例行RAS扩张成形介入治疗。CDFI、MRA与DSA对照诊断轻度RAS的敏感性、特异性和准确性各为95%、100%,100%、100%,96%、100%;诊断中、重度RAS的敏感性,特异性和准确性各为92%、100%,100%、50%,93%、93%。结论CDFI筛查及CEMRA诊断RAS均有重要作用,能提供RAS的全面信息;对RAS所致高血压的诊治有重要意义。
Objective To evaluate the value of color Doppler flow imaging (CDFI) and enhanced magnetic resonance angiography (CEMRA) in the diagnosis of renal artery stenosis (RAS). Methods Eighty-four patients underwent primary screening with CDFI to identify the renal arteries and their grade 3 and 4 branches. Fifty-five MRA examinations were performed to identify renal artery lesions and 38 to DSA. Application of TESTBOLUS first 2mL / s test injection of renal artery best display time, and then from the forearm vein injection of contrast agent Magnevist 20 mL, delay 20 ~ 35s line renal artery volume data scan; layer thickness 1.1mm, a total of 4 times ; Source image input RON-ADO2004A workstation for three-dimensional reconstruction. The results showed that left and right RAS each of 18,30 cases, mild, moderate and severe stenosis of 26,15,7 cases; 5 cases of RAS dilation interventional treatment. The sensitivity, specificity and accuracy of CDFI, MRA and DSA in the diagnosis of mild RAS were 95%, 100%, 100%, 100%, 96% and 100% respectively. The sensitivity and specificity of diagnostic RAS And the accuracy of each of 92%, 100%, 100%, 50%, 93%, 93%. Conclusion CDFI screening and CEMRA diagnosis of RAS have an important role in providing RAS comprehensive information; RAS-induced hypertension diagnosis and treatment of great significance.