Radiologic Assessment of Brain Arteriovenous Malformations: What Clinicians Need to Know
Radiologic Assessment of Brain Arteriovenous Malformations: What Clinicians Need to Know
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DOI：
10.1148/rg.302095728
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发表时间：
2010-03-01
期刊：
影响因子：
5.5
通讯作者：
Krings, Timo
中科院分区：
文献类型：
--
作者：
Geibprasert, Sasikhan;Pongpech, Sirintara;Krings, Timo
脑动静脉畸形（AVMs）是脑内血管连接异常，可能是先天性的。有几个亚组，最常见的是肾小球型脑动静脉畸形，瘘管型脑动静脉畸形较少见。脑AVM也可能是更广泛疾病的一部分（例如，脑面动静脉异聚综合征）。当在横断面成像中发现颅内病变血管时，还必须考虑其他诊断，包括大的发育性静脉异常、恶性硬膜动静脉瘘和烟雾病，因为已知这些实体具有不同的自然病史，需要不同的治疗方案。脑动静脉畸形的一些影像学发现对临床管理决策有影响；最重要的是那些已知与未来出血风险相关的因素，包括先前出血的证据、膜内动脉瘤、静脉狭窄、深静脉引流和病灶深部。其他影像学表现应包括在放射学报告中，包括脑动静脉畸形引起的继发性影响，可能导致非出血性神经功能缺损，如静脉充血、胶质增生、脑积水或动脉偷盗。2010. (C) RSNA, radiographics.rsna.org
Brain arteriovenous malformations (AVMs) are abnormal vascular connections within the brain that are presumably congenital in nature. There are several subgroups, the most common being glomerular type brain AVMs, with fistulous type AVMs being less common. A brain AVM may also be a part of more extensive disease (eg, cerebrofacial arteriovenous metameric syndrome). When intracranial pathologic vessels are encountered at cross-sectional imaging, other diagnoses must also be considered, including large developmental venous anomalies, malignant dural arteriovenous fistulas, and moyamoya disease, since these entities are known to have different natural histories and require different treatment options. Several imaging findings in brain AVMs have an impact on decision making with respect to clinical management; the most important are those known to be associated with risk of future hemorrhage, including evidence of previous hemorrhage, intranidal aneurysms, venous stenosis, deep venous drainage, and deep location of the nidus. Other imaging findings that should be included in the radiology report are secondary effects caused by brain AVMs that may lead to nonhemorrhagic neurologic deficits, such as venous congestion, gliosis, hydrocephalus, or arterial steal. (C)RSNA, 2010.radiographics.rsna.org