摘要
目的:研究16层螺旋CT肺血管造影在急性肺动脉栓塞(PE)诊断中的应用价值。着重探讨亚段水平周围型肺栓塞的适宜扫描参数及显示方法。方法:应用16层螺旋CT扫描机(GE ligtspeed 16)对临床拟诊肺栓塞的42例患者进行前瞻性研究。依据患者屏气时间长短,设定3组扫描参数。结果:CT诊断肺栓塞31例。中央型22例,周围型9例。3组扫描参数均可清晰显示亚段水平肺动脉栓子。高质量扫描模式肺动脉CTA成像质量最高,常规扫描模式次之,高速扫描模式再次之。结论:16层螺旋CT肺血管造影快速、无创、敏感性、特异性高。选择适宜扫描参数及显示方法,急性肺栓塞诊断可以达到亚段水平。2组常规扫描模式更为适宜PE患者。
Objective：To study the role of pulmonary angiography with 16-detector row spiral CT in the diagnosis of pulmonary embolism （PE）. The author emphatically explored the proper scanning parameters and image-forming methods to demonstrate peripheral pulmonary embolism （PFFE）in subsegment level. Methods： Forty-two patients suspected of having pulmonary embolism were examined prospectively with 16-detector row spiral CT pulmonary angioga-aphy. Three groups scanning parameters were set up according to the time of holding breath. Results：PE were diagnosed in 31 of 42 cases. Central pulmonary embolism were found in 22 cases. Peripheral pulmonary embolism （PPTE） were found in 9 cases.The emboli in subsegmental pulmonary arteries were detected clearly with three groups scanning parameters. The high quality CT scanning mode provided the best images of pulmonary angiography. The images yielded with conventioual CT scanning technology were better than high-speed scanning technology. Conclusion： 16-detector row spiral CT pulmonary angiography is non-invasive, fast, and highly sensitive for PE. Acute pulmonary embolism in subsegment level can be diagnosed with proper selection of CT scanning parameters and image-forming methods. The conventional CT scanning mode is the most appropriate technology for PE.
出处
《医学影像学杂志》
2006年第11期1152-1154,共3页
Journal of Medical Imaging
关键词
肺栓塞
体层摄影术
X线计算机
Pulmonary embolism
Tomography, X-ray computed
