Embedded MR fluoroscopy: High temporal resolution real-time imaging during high spatial resolution 3D MRA acquisition

Sean B. Fain; Stephen J. Riederer; John Huston III; Bernard F. King

doi:10.1002/mrm.1247

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Embedded MR fluoroscopy: High temporal resolution real-time imaging during high spatial resolution 3D MRA acquisition

Journal article

Open access

Peer reviewed

Embedded MR fluoroscopy: High temporal resolution real-time imaging during high spatial resolution 3D MRA acquisition

Sean B. Fain, Stephen J. Riederer, John Huston III and Bernard F. King

Magnetic resonance in medicine, Vol.46(4), pp.690-698

10/2001

DOI: 10.1002/mrm.1247

PMID: 11590645

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Abstract

A method termed “embedded fluoroscopy” for simultaneously acquiring a real-time sequence of 2D images during acquisition of a 3D image is presented. The 2D images are formed by periodically sampling the central phase encodes of the slab-select direction during the 3D acquisition. The tradeoffs in spatial and temporal resolution are quantified by two parameters: the “redundancy” (R), the fraction of the 3D acquisition sampled more than once; and the “effective temporal resolution” (T), the time between temporal updates of the central views. The method is applied to contrast-enhanced MR angiography (CE-MRA). The contrast bolus dynamics are portrayed in real time in the 2D image sequence while a high-resolution 3D image is being acquired. The capability of the 2D acquisition to measure contrast enhancement with only a 5% degradation of the spatial resolution of the 3D CE-MR angiogram is shown theoretically. The method is tested clinically in 15 CE-MRA patient studies of the carotid and renal arteries

contrast-enhanced 3D MR angiography

MR fluoroscopy

perfusion MRI

real-time MRI

vascular MRI

Details

Title: Subtitle: Embedded MR fluoroscopy: High temporal resolution real-time imaging during high spatial resolution 3D MRA acquisition
Creators: Sean B. Fain - University of Wisconsin–Madison
Stephen J. Riederer - Mayo Clinic
John Huston III - Mayo Clinic
Bernard F. King - Mayo Clinic
Resource Type: Journal article
Publication Details: Magnetic resonance in medicine, Vol.46(4), pp.690-698
DOI: 10.1002/mrm.1247
PMID: 11590645
NLM abbreviation: Magn Reson Med
ISSN: 0740-3194
eISSN: 1522-2594
Publisher: John Wiley & Sons, Inc
Number of pages: 9
Language: English
Date published: 10/2001
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Radiology; Electrical and Computer Engineering; Health, Sport, and Human Physiology
Record Identifier: 9984274955302771

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