Ostertun B, Solymosi L
Clinic for Epileptology, University Hospital Bonn, Federal Republic of Germany.
Neuroradiology. 1993;35(2):97-104. doi: 10.1007/BF00593962.
CT, MRI and contrast angiography of 20 patients with 21 developmental venous anomalies (DVAs), so-called venous angiomas, were compared with magnetic resonance angiography employing a two-dimensional time-of-flight technique (2D-MRA). MRA was diagnostic in 17 DVAs, when both the primary 2D slices and the maximum-intensity-projection images were read. Contrast angiography still provides the best visualization of both DVA components: dilated medullary veins and transcerebral draining vein; however, it is an invasive procedure and delivers no information about brain parenchyma. We regard MRI as necessary in cases with a suspected DVA because of the high rate of association with cavernomas: 33% in this study. Acute neurological symptoms were caused by haemorrhage from an associated cavernoma and not from the DVA in 4 such cases. Thus MRA combined with MRI obviates angiography in most cases and offers a noninvasive diagnostic strategy adequate for DVAs.
对20例患有21处发育性静脉异常（DVA）（即所谓的静脉血管瘤）的患者进行了CT、MRI和对比血管造影，并与采用二维时间飞跃技术（2D-MRA）的磁共振血管造影进行了比较。当同时读取原始二维切片和最大强度投影图像时，MRA对17处DVA具有诊断价值。对比血管造影仍然能够最佳地显示DVA的两个组成部分：扩张的髓静脉和经脑引流静脉；然而，它是一种侵入性检查，无法提供有关脑实质的信息。由于DVA与海绵状血管瘤的关联率很高（本研究中为33%），我们认为对于疑似DVA的病例，MRI是必要的。在4例此类病例中，急性神经症状是由相关海绵状血管瘤出血引起的，而非DVA所致。因此，MRA与MRI相结合在大多数情况下可避免进行血管造影，并为DVA提供了一种足够的非侵入性诊断策略。
