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PubMed · 8180460

Time-resolved MR imaging by automatic data segmentation.

J O Fredrickson·N J Pelc
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Abstract

A method for time-resolved imaging that provides a flexible trade-off between imaging time and temporal resolution is presented. It is based on a view order selection technique that automatically segments the acquired raw data into appropriate temporal frames. When used with cardiac monitoring and phase-contrast imaging, data similar to that obtained with a conventional gated phase-contrast sequence are acquired rapidly. For many applications, the temporal resolution can be reduced enough to permit imaging within a breath-hold interval, while still allowing accurate time-averaged flow quantitation. This is a general technique that can be implemented within a variety of pulse sequences and can resolve other motion cycles, including the respiratory cycle.

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AlgorithmsAortaArtifactsHeartHeart RateHumansImage EnhancementMagnetic Resonance ImagingModels, CardiovascularModels, StructuralMotion PicturesPortal VeinRegional Blood FlowRenal ArteryRespirationSignal Processing, Computer-AssistedTime FactorsTracheaJournal ArticleResearch Support, Non-U.S. Gov'tResearch Support, U.S. Gov't, P.H.S.

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J O Fredrickson, N J Pelc. Time-resolved MR imaging by automatic data segmentation.. https://doi.org/10.1002/jmri.1880040217

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