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Method for rapidly determining and reconstructing the peak arterial frame from a time-resolved CE-MRA exam.

T J Carroll·F R Korosec·J S Swan·T M Grist·R Frayne·C A Mistretta
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Abstract

A method that determines the information necessary to reconstruct a single vascular image from a time-resolved CE-MRA exam is presented. Raw k-space data are used to approximate the time course of the contrast passage prior to image reconstruction. The resulting k-space contrast curve is used to select the data corresponding to peak arterial enhancement. These data are reconstructed and immediately presented for physician review, with the entire time-series of images available at a later time for more detailed diagnosis. This approach dramatically reduces the latency between acquisition of large 4D (3D plus time) data sets and presentation of a diagnostic quality time frame. This algorithm has proven successful in the imaging of several anatomical regions and-in exams that do not require a breath hold-permits the use of an acquisition method that produces a contrast-enhanced angiogram without a timing scan.

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ArteriesFemaleHumansImage Processing, Computer-AssistedMagnetic Resonance AngiographyTime FactorsJournal Article

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BibTeXRIS

T J Carroll, F R Korosec, J S Swan, T M Grist, R Frayne, C A Mistretta. 2000. Method for rapidly determining and reconstructing the peak arterial frame from a time-resolved CE-MRA exam.. https://doi.org/10.1002/1522-2594(200011)44%3A5%3C817%3A%3Aaid-mrm22%3E3.0.co%3B2-x

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