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首页> 外文期刊>Radiology >Cerebral arteriovenous malformations: flow quantitation by means of two-dimensional cardiac-gated phase-contrast MR imaging.
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Cerebral arteriovenous malformations: flow quantitation by means of two-dimensional cardiac-gated phase-contrast MR imaging.

机译：脑动静脉畸形：通过二维心脏门控相衬MR成像进行流量定量。

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摘要

PURPOSE: To test two-dimensional cardiac-gated phase-contrast (2DGPC) magnetic resonance (MR) imaging in the evaluation of cerebral arteriovenous malformations (AVMs) and the alterations in flow that accompany embolization therapy. MATERIALS AND METHODS: A 2DGPC sequence was used to measure flow velocity in the feeding vessels and corresponding contralateral vessels (CCVs) of seven patients (six men and one woman, 21-55 years of age; mean, 37 years) with cerebral AVMs and in the vessels of four healthy volunteers (all men; mean age, 22 years). RESULTS: In the patients, the flow in the feeding vessels exceeded the flow in the CCVs by a margin far greater than the asymmetry in flow in the volunteers. The mean reduction in flow after embolization was 54.9% +/- 11.1 in embolized feeding vessels (n = 6) and 5.3% +/- 2.8 in nonembolized vessels (n = 3). Postembolization flow enhancement was observed in the CCV (n = 2), which suggests a degree of autoregulatory dysfunction. CONCLUSION: This technique can be used to evaluate the flow patterns of AVMs and the hemodynamic changes that occur with embolization.
机译：目的：在评估脑动静脉畸形（AVM）和栓塞治疗后血流变化的过程中，测试二维心脏门控相衬（2DGPC）磁共振（MR）成像。材料与方法：使用2DGPC序列测量了7例脑AVM和静脉曲张的患者（六男一女，年龄21-55岁;平均37岁）在进食血管和相应对侧血管（CCV）中的流速。在四名健康志愿者的血管中（全部男性;平均年龄22岁）。结果：在患者中，喂养血管中的流量超过CCV中的流量，其幅度远大于志愿者中流量的不对称性。栓塞后的供血容器（n = 6）中栓塞后的平均血流减少量为54.9％+/- 11.1，非栓塞器中（n = 3）为5.3％+/- 2.8。在CCV中观察到栓塞后血流增强（n = 2），这提示一定程度的自动调节功能障碍。结论：该技术可用于评估AVM的流动模式以及栓塞后发生的血液动力学变化。

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