CAJ | 학술논문

目的研究16层螺旋CT肺血管造影及重建技术在老年人肺动脉栓塞(肺栓塞)诊断中的应用.方法 24例疑为肺栓塞的老年患者应用16层螺旋CT行肺动脉成像.CT后重建技术包括最大密度投影(MIP)、多平面重建(MPR)及容积再现(VR).结果 24例老年患者共发现肺动脉栓子161个,肺栓塞的直接CT征象:完全闭塞27支(占16.8%),不规则的充盈缺损109支(67.7%),中心性充盈缺损(轨道征)25支(15.5%).横断面图像共检出栓子161个,MPR像共检出153个(95.0%),MIP像检出113个(70.2%),VR像检出69个(42.9%).MIP和VR图像对栓子的显示效果相对较差,尤其是对肺叶及其以下肺动脉分支内栓子的显示效果明显低于横断面组(x2值分别为235.36和243.4l,均P＜0.05).结论 16层螺旋CT肺血管造影无创、快速、敏感性高,应当作为老年人肺栓塞的首选检查方法.
목적 연구16층라선CT폐혈관조영급중건기술재노년인폐동맥전새(폐전새)진단중적응용.방법 24례의위폐전새적노년환자응용16층라선CT행폐동맥성상.CT후중건기술포괄최대밀도투영(MIP)、다평면중건(MPR)급용적재현(VR).결과 24례노년환자공발현폐동맥전자161개,폐전새적직접CT정상:완전폐새27지(점16.8%),불규칙적충영결손109지(67.7%),중심성충영결손(궤도정)25지(15.5%).횡단면도상공검출전자161개,MPR상공검출153개(95.0%),MIP상검출113개(70.2%),VR상검출69개(42.9%).MIP화VR도상대전자적현시효과상대교차,우기시대폐협급기이하폐동맥분지내전자적현시효과명현저우횡단면조(x2치분별위235.36화243.4l,균P＜0.05).결론 16층라선CT폐혈관조영무창、쾌속、민감성고,응당작위노년인폐전새적수선검사방법.
Objective To study the application of pulmonary angiography and reconstruction techniques with 16-detector row spiral CT in the diagnosis of pulmonary embolism (PE) in the elderly.Methods Twenty-four elderly patients with suspected pulmonary thromboembolism received detection of CT and pulmonary artery angiography ( CTPA ) on 16-detector MSCT.Post-reconstruction techniques included maximum intensity projection (MIP), volume rendering (VR)and multiple planar reformation (MPR). Results A total of 161 pulmonary artery thrombi were detected in 24 elderly patients. The direct signs of pulmonary embolism included total occlusion (16.8%, 27/161), partial filling defect (67.7%, 109/161) and central filling defect or track sign (15.5%, 25/161). A total of 161 pieces of pulmonary thrombi were detected in transect image, 153 (95.0%) in MPR, 113 (70.2%) in MIP and 69 (42.9%) in VR. The transect image excelled evidently MIP and VR image in displaying pulmonary thrombi, especially the thrombi in pulmonary lobe and pulmonary artery branch (χ2 =235.36 and 243.41, P＜0.05). Conclusions The 16-detector row spiral CT pulmonary angiography is non-invasive, fast and high sensitive, it should be the first choice for the diagnosis of PE in the elderly.