钆剂在磁共振血管造影术中团注法与持续输注法的比较。
Comparison of bolus and constant infusion methods of gadolinium administration in MR angiography.
作者信息
Sze G, Goldberg S N, Kawamura Y
机构信息
Yale University School of Medicine, Department of Radiology, New Haven, CT 06510.
出版信息
AJNR Am J Neuroradiol. 1994 May;15(5):909-12.
PURPOSE
To determine whether the method of delivery of gadolinium can alter optimal small-vessel detail in MR angiography.
METHODS
Six healthy volunteers were studied with MR angiography using both a constant infusion and a bolus method of contrast administration to a total dose of 0.1 mmol/kg. Both three-dimensional time-of-flight and 3-D phase-contrast techniques were used.
RESULTS
Constant infusion did not prove superior to bolus administration of contrast. With both techniques, gadolinium enhancement uniformly improved visualization of small vessels. Delay from the time of contrast administration to scan acquisition decreased vessel enhancement.
CONCLUSIONS
Bolus administration of gadolinium is sufficient to improve small vessel visualization with MR angiography. When a series of contrast-enhanced images is to be obtained, MR angiographic sequences should be obtained first.
目的
确定钆的给药方式是否会改变磁共振血管造影中最佳小血管细节。
方法
对6名健康志愿者进行磁共振血管造影研究，采用持续输注和团注两种造影剂给药方法，总剂量为0.1 mmol/kg。使用了三维时间飞跃法和三维相位对比技术。
结果
持续输注并未证明优于造影剂团注。在两种技术中，钆增强均能均匀改善小血管的可视化。从造影剂给药到扫描采集的延迟会降低血管增强。
结论
钆团注足以通过磁共振血管造影改善小血管可视化。当要获取一系列对比增强图像时，应首先获取磁共振血管造影序列。
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