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

Timothy J. Carroll*, Frank R. Korosec, J. Shannon Swan, Thomas M. Grist, Richard Frayne, Charles A. Mistretta

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

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. (C) 2000 Wiley-Liss, Inc.

Original languageEnglish (US)
Pages (from-to)817-820
Number of pages4
JournalMagnetic resonance in medicine
Volume44
Issue number5
DOIs
StatePublished - 2000

Keywords

  • Contrast-enhanced
  • K-space
  • MR angiography
  • Multi-phase
  • Time-resolved

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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