主动脉瘤25例的影像诊断  

Aortic aneurysm:diagnosis of spiral CT and MRI

作　　者：毛文萍[1] 陈峰[1] 储成凤[1] 徐秋贞[1] 高广如[1] 

机构地区：[1]南京铁道医学院附属医院放射科,江苏南京210009

出　　处：《铁道医学》2000年第4期231-233,共3页Railway Medical Journal

摘　　要：目的　探讨螺旋CT(SCT)和MRI对主动脉瘤的诊断价值。方法　 2 5例主动脉瘤 ,13例行MRI检查 ,12例行SCT及三维重建技术检查。三维重建方法采用表面阴影显示法 (SSD)、最大密度投影 (MaxIP)及多层面重建法 (MPVR)。结果　 13例主动脉夹层MRI和SCT均较好显示主动脉夹层内膜片和真假腔 ,SCT显示内膜破口 5例 ,MRI无一例显示 ;SCT及三维重建较好地显示了主动脉夹层的内膜撕裂的范围、真性主动脉瘤 (TAA)瘤壁的厚度及钙化、附壁血栓的情况及与邻近大血管分支的关系。结论　SCT及三维重建技术的联合应用较低场MRI更能明确主动脉瘤的病变 。Objective To evaluate the diagnostic value of spiral CT(SCT) and MRI in the assessment of aortic aneurysm.Methods SCT or MRI were performed on 25 patients of whom 13 was investigated by MRI and 12 by SCT with SSD,MaxIP and MPVR images.Results MRI and SCT could demonstrate the intimal flap,the true lumen and the false one in 13 AD patients.Site of rupture of aorta was clearly showed by SCT in five patients but none by MRI.SCT better showed the extent of aorta rupture, intraluminal thrombus, the thickness and calcification of the aneurysm wall, and the relationship between aneurysm and arterial branches in aortic aneurysm.Conclusions SCT combined with 3-dimensional reconstructed images are more useful than low magnetic field MRI in the assessment of aortic aneurysm and can provide more information for the surgeons.

关 键 词：主动脉瘤 磁共振成像 螺旋CT MRI 

分 类 号：R543.160.4[医药卫生—心血管疾病]