320层CT单容积肺动脉成像诊断老年肺动脉血栓栓塞的临床应用  

Application of 320 detector row CT single volume pulmonary angiography in diagnosis of pulmonary embolism in elderly patients

作　　者：濮欣[1] 窦瑞雨[1] 黄小勇[1] 晏子旭[1] 赵轶轲[1] 张卫华[1] 王玲娜[1] 张丽[1] 

机构地区：[1]首都医科大学附属北京安贞医院医学影像科,100029

出　　处：《中华老年心脑血管病杂志》2010年第11期974-976,共3页Chinese Journal of Geriatric Heart,Brain and Vessel Diseases

摘　　要：目的探讨320层CT单容积肺动脉成像诊断肺动脉血栓栓塞(肺栓塞)的临床应用价值。方法应用320层CT单容积扫描模式对75例年龄>60岁临床怀疑肺栓塞患者行肺动脉CT成像,采用容积再现技术、多平面重建及曲面重建等方法分析扫描数据。结果本组75例患者均成功完成扫描,图像质量均可满足诊断,41例诊断为肺栓塞,其中段级肺栓塞12例,余34例除外肺栓塞。全部病例最终诊断均经核素肺通气灌注扫描及临床溶栓治疗有效所证实。应用320层CT单容积肺动脉成像扫描时间1 s,平均射线剂量为(2.73±0.47)mSv,造影剂总量45 ml。结论 320层CT单容积肺动脉成像诊断肺栓塞是一种有效的无创检查手段,其具有低射线损伤、低对比剂用量、成像速度快等优势,尤其适用于临床急重症及老年患者。Objective To evaluate the feasibility and clinical value of 320 detector row CT single volume scan pulmonary angiography in the diagnosis of pulmonary embolism（PE）. Methods Seventy-five patients（〉60 years） suspected to have PE underwent 320 detector row CT single volume scan pulmonary angiography. The post processing techniques included VR, MPR and CPR. The data were analyzed and the feasibility and clinical value of this new scan model were as- sessed. Results All of 75 cases completed the exam successfully.and the quality of the image was good enough for diagnosis,41 cases were dianosed as PE,including 12 with segmental PE. In other 34 cases,PE was ruled out. The diagnoses were verified by ventilation/perfusion scintigraphy and effective anticoagulant-thrombolysis therapy. For every patient,the scan time of 320 detector row CT single volume scan pulmonary angiography was 1 s,the amount of contrast agent used was 45 ml,and the average radiation exposure was（2.73±0.47） mSv. Conclusion 320 detector row CT single volume scan pulmonary angiography is a noninvasive imaging method which is feasible to evaluate the morphology of pulmonary artery and to diagnose pulmonary embolism accurately. Because of the advantages such as low radiation exposure and low dose of contrast agent and rapid imaging, this scan mode is particularly applicable to acute severe patients and old patients.

关 键 词：肺栓塞 体层摄影扫描仪 X线计算机 肺动脉 血管造影术 X线影像增强 

分 类 号：R816.2[医药卫生—放射医学]