Gouliamos A, Gotsis E, Vlahos L, Samara C, Kapsalaki E, Rologis D, Kapsalakis Z, Papavasiliou C
Department of Radiology, University of Athens, Greece.
Neuroradiology. 1992;35(1):46-9. doi: 10.1007/BF00588278.
In order to evaluate the sensitivity and specificity of magnetic resonance angiography (MRA) in spontaneous subarachnoid haemorrhage, 14 patients with recent haemorrhage verified by CT or lumbar puncture were investigated with both selective intra-arterial digital subtraction angiography (IA-DSA) and MRA by two independent teams, each having the same preangiographic information. The results were compared with each other and whenever possible (all positive cases except one) with those of surgical intervention. Seven patients were identified by MRA and IA-DSA as having a single aneurysm on the circle of Willis, 1 an aneurysm of the posterior inferior cerebellar artery 1 an aneurysm of the internal carotid artery (siphon) and 2 patients with two aneurysms on the circle of Willis. MRA and IA-DSA both failed to demonstrate aneurysms in 2 cases. Three patients had negative results on both methods and no surgical intervention was attempted. The aneurysms ranged from 0.3 to 1.5 cm in size. In most cases there was agreement between MRA and DSA, leading us to believe that, if the proper protocols are followed, MRA is a powerful alternative to other established methods in the detection of intracranial aneurysms. At this stage it will not replace IA-DSA prior to surgery, but the ability to obtain various projections using 3D MRA may improve surgical planning.
为了评估磁共振血管造影（MRA）在自发性蛛网膜下腔出血中的敏感性和特异性，由两个独立的团队使用选择性动脉内数字减影血管造影（IA-DSA）和MRA对14例经CT或腰椎穿刺证实近期有出血的患者进行了检查，每个团队都拥有相同的血管造影前信息。将结果相互比较，并尽可能（除1例阳性病例外的所有阳性病例）与手术干预结果进行比较。MRA和IA-DSA均确诊7例患者在Willis环有单个动脉瘤，1例为小脑后下动脉瘤，1例为颈内动脉（虹吸部）动脉瘤，2例患者在Willis环有两个动脉瘤。MRA和IA-DSA在2例中均未显示动脉瘤。3例患者两种方法检查结果均为阴性，未尝试手术干预。动脉瘤大小在0.3至1.5厘米之间。在大多数情况下，MRA和DSA结果一致，这使我们相信，如果遵循适当的方案，MRA在检测颅内动脉瘤方面是其他既定方法的有力替代方法。在此阶段，它不会在手术前取代IA-DSA，但使用3D MRA获得各种投影的能力可能会改善手术规划。
