Lee B C, Herzberg L, Zimmerman R D, Deck M D
AJNR Am J Neuroradiol. 1985 Nov-Dec;6(6):863-70.
Fifteen vascular malformations, including six supratentorial arteriovenous malformations (AVMs), three venous malformations, and six brainstem vascular malformations, were examined on 0.5 T magnetic resonance (MR) and GE 9800 and 8800 computed tomographic (CT) scanners. All the malformations were shown by MR, and the arterial and venous drainage of AVMs was precisely delineated. Hematoma was always differentiated from calcification by MR signal characteristics. Increased signal in the brain parenchyma was often seen adjacent to AVMs. The signal of blood within venous malformations altered with spin-echo techniques using various repetition times and was distinguished from rapidly flowing blood in AVMs that lacked signal in all imaging sequences. Brainstem malformations were seldom demonstrated by angiography. Hemorrhage was common and was invariably associated with multiple areas of absent signal that may have represented abnormal vessels. These appearances are distinct from those of intrinsic tumors and are probably pathognomonic of brainstem vascular malformations.
15个血管畸形，包括6个幕上动静脉畸形（AVM）、3个静脉畸形和6个脑干血管畸形，在0.5T磁共振（MR）以及GE 9800和8800计算机断层扫描（CT）扫描仪上进行了检查。所有畸形均能在MR上显示，并且AVM的动静脉引流情况得到了精确描绘。通过MR信号特征，血肿总能与钙化区分开来。在AVM附近的脑实质中经常可见信号增强。静脉畸形内血液的信号随使用不同重复时间的自旋回波技术而改变，并且与AVM中在所有成像序列中均无信号的快速流动血液区分开来。脑干畸形很少通过血管造影显示。出血很常见，并且总是与多个无信号区域相关，这些无信号区域可能代表异常血管。这些表现与原发性肿瘤不同，可能是脑干血管畸形的特征性表现。
