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PubMed · 9090607

Vessel enhancement filtering in three-dimensional MR angiograms using long-range signal correlation.

Y P Du·D L Parker
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Abstract

Small vessels in three-dimensional MR angiograms have low visibility in maximum-intensity projection images because of their low contrast. In a previous study, we had two nonlinear filters that appeared to give significant improvement in small vessel detail. In this paper, we report on a generalization of this filter that allows a more general modeling of the vessels and a more complete suppression of background. One implementation of the general filter gave a vessel mean contrast-to-noise ratio that is 2.52 and 3.51 times higher than the vessel mean contrast-to-noise ratio obtained using our previously reported maximum-minimum (max-min) filter and cross-section filter, respectively.

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Blood VesselsCircle of WillisHumansImage EnhancementMagnetic Resonance AngiographyModels, CardiovascularReference ValuesSensitivity and SpecificityJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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Y P Du, D L Parker. Vessel enhancement filtering in three-dimensional MR angiograms using long-range signal correlation.. https://doi.org/10.1002/jmri.1880070234

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