颅脑AVM的CT,MRI／MRA和血管造影的分析比较

对颅脑AMV的主要影像学诊断方法——CT、MRI/MRA和血管造影检查作分析和比较。材料与方法:72例确诊为颅脑AVM的病人,男性42例,女性30例,年龄从21～52岁,平均37岁。结果:三种影像学检查方法都能很好地显示颅脑的AVM的病灶。MRI/MRA可直接显示畸形的血管团,供血动脉和引流静脉,对AVM的诊断有其特异性,但操作复杂,费用昂贵。而CT检查操作较为简便,可揭示诊断及其合并症——出血。颅脑血管造影检查(特别是DSA)可明确诊断,显示供血动脉和引流静脉,准确度很高,但操作复杂、昂贵,而且有创伤性.结论:可疑颅脑AVM的病人应首选MRI/MRA检查,而CT检查对急诊昏迷的病人较好;脑血管造影则应依手术或介入放射治疗的需要而适当使用。

The Analysis and Comparison of CT, MRI/MRA and Angiography on Cranio-cerebral AVM

Prupose: to analyse and compare the several imagic examinations on cranio-cerebral AVM-CT, MRI/MRA and angiography. Materials and methods: A-mong 72 patients with cranio-cerebral AVM. male 42, female 30, aged from 21 to 52 years old with an average of 37. Results:These three methods can illustrate the foci of AVM, MRI/MRA can directly show the apperearnce of the abnormal blood vessles , including supply arteries and leading draining. So it's quite specific for AVM. But is's an expensive and complicated method. CT can also show the foci of AVM and its complica-tion-hemorrage, and the manipulation is quite simple. The cranio-cerebral angiography (esp. DSA ) can make a firm diagnosis of AVM, showing the supply arteries and draining veins in great details. But it's very complicated, expensive and intrusive. Conclusions: the suspect patients of AVM should be first examined by MRI/MRA; the emergency patients with coma should be scanned by CT; and the cranio-angiography (or DSA) should be chosen according to the needs of operation or intervention treatment.