增强磁共振血管造影。方法、限制和可能性。

Acta radiologica. Supplementum Pub Date : 1997-01-01

M Kouwenhoven

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引用次数: 0

摘要

传统MRA依赖于血流诱导的幅度和/或相位效应增强的血液信号，而钆增强MRA主要依赖于松弛时间T1减少引起的血液信号增强。这对所使用的成像技术以及成像体积方向和总扫描时间都有很大的影响。一般来说，钆增强的MRA比没有造影剂的MRA更快，伪影更少。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Contrast-enhanced MR angiography. Methods, limitations and possibilities.

Whereas conventional MRA relies on enhanced blood signal from flow-induced magnitude and/or phase effects, gadolinium-enhanced MRA relies mainly on the enhanced blood signal caused by the reduced relaxation time T1. This has a large impact on the imaging technique used, as well as on the imaging volume orientation and the total scanning time. In general, gadolinium-enhanced MRA is faster, with fewer artifacts than MRA without contrast agents.

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Acta radiologica. Supplementum

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