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Method for rapidly determining and reconstructing the peak arterial frame from a time‐resolved CE‐MRA exam
Author(s) -
Carroll Timothy J.,
Korosec Frank R.,
Swan J. Shan,
Grist Thomas M.,
Frayne Richard,
Mistretta Charles A.
Publication year - 2000
Publication title -
magnetic resonance in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.696
H-Index - 225
eISSN - 1522-2594
pISSN - 0740-3194
DOI - 10.1002/1522-2594(200011)44:5<817::aid-mrm22>3.0.co;2-x
Subject(s) - contrast (vision) , computer science , frame (networking) , k space , artificial intelligence , computer vision , image quality , data acquisition , latency (audio) , image (mathematics) , pattern recognition (psychology) , nuclear medicine , radiology , medicine , magnetic resonance imaging , telecommunications , operating system
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. Magn Reson Med 44:817–820, 2000. © 2000 Wiley‐Liss, Inc.