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PubMed · 1881326

MR angiography without subtraction.

Y Zur·X Zou·L J Neuringer
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Abstract

A new NMR method for producing angiograms with strong suppression of the static spin signal and without the need for subtraction is described and demonstrated. A velocity-selective pulse sequence was implemented whereby the magnetization of all stationary spins is driven to the -z axis and is not detected, while maximizing the signal intensity of the moving spins. A theory of the method is presented and gives good agreement with experimental results obtained on a flow phantom. It is shown theoretically and experimentally that high-quality velocity-independent angiograms of the head and neck can be obtained with strong suppression of static spin signal when TR approximately T1. The method can be extended to produce three-dimensional angiograms.

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AngiographyAngiography, Digital SubtractionBlood CirculationBlood Flow VelocityBlood VesselsHumansImage EnhancementMagnetic Resonance ImagingModels, CardiovascularModels, TheoreticalRheologyJournal ArticleResearch Support, Non-U.S. Gov't

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Y Zur, X Zou, L J Neuringer. 1991. MR angiography without subtraction.. https://doi.org/10.1002/mrm.1910190227

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