Time-resolved contrast-enhanced carotid imaging using undersampled projection reconstruction acquisition

Jiang Du; Sean B Fain; Frank R Korosec; Thomas M Grist; Charles A Mistretta

doi:10.1002/jmri.20890

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Time-resolved contrast-enhanced carotid imaging using undersampled projection reconstruction acquisition

Journal article

Open access

Peer reviewed

Time-resolved contrast-enhanced carotid imaging using undersampled projection reconstruction acquisition

Jiang Du, Sean B Fain, Frank R Korosec, Thomas M Grist and Charles A Mistretta

Journal of magnetic resonance imaging, Vol.25(5), pp.1093-1099

05/2007

DOI: 10.1002/jmri.20890

PMID: 17410565

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Abstract

To investigate the utility of nonuniform angular spacing of projections in a three-dimensional (3D) hybrid undersampled projection reconstruction (PR) acquisition for contrast-enhanced (CE) time-resolved carotid imaging. Carotid CE magnetic resonance angiography (CE-MRA) was performed on seven healthy volunteers using a time-resolved hybrid sequence that combined undersampled PR acquisition in-plane and Cartesian slice encoding through-plane. The undersampling streak artifact comes mainly from the superior-inferior (S/I) direction in carotid imaging and is suppressed by nonuniform distribution of the projections. Phantom and volunteer studies were performed to demonstrate its efficacy. The undersampling streak artifact was significantly suppressed through a nonuniform distribution of the projection angles with more projections aligned along the S/I direction. The hybrid PR sequence combined with nonuniform distribution of the projection angles provided time-resolved images of the carotid arteries with high temporal resolution (two seconds per frame) and high spatial resolution (1.0 x 1.0 x 1.5 mm(3)) simultaneously. High-resolution dynamic imaging of the carotid arteries is feasible with the use of a hybrid undersampled PR acquisition. Undersampling streak artifact can be suppressed significantly through nonuniform distribution of the projections.

Adult

Artifacts

Carotid Arteries - anatomy & histology

Contrast Media

Female

Gadolinium DTPA

Humans

Image Processing, Computer-Assisted

Imaging, Three-Dimensional

Magnetic Resonance Angiography - methods

Phantoms, Imaging

Details

Title: Subtitle: Time-resolved contrast-enhanced carotid imaging using undersampled projection reconstruction acquisition
Creators: Jiang Du - University of Wisconsin–Madison
Sean B Fain - University of Wisconsin–Madison
Frank R Korosec - University of Wisconsin–Madison
Thomas M Grist - University of Wisconsin–Madison
Charles A Mistretta - University of Wisconsin–Madison
Resource Type: Journal article
Publication Details: Journal of magnetic resonance imaging, Vol.25(5), pp.1093-1099
DOI: 10.1002/jmri.20890
PMID: 17410565
NLM abbreviation: J Magn Reson Imaging
ISSN: 1053-1807
eISSN: 1522-2586
Language: English
Date published: 05/2007
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Radiology; Electrical and Computer Engineering; Health, Sport, and Human Physiology
Record Identifier: 9984274953902771

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