High temporal and spatial resolution 4D MRA using spiral data sampling and sliding window reconstruction

Contrast‐enhanced magnetic resonance angiography (CE‐MRA) requires high spatial resolution to demonstrate detailed vasculature and high temporal resolution to capture the contrast bolus. Sparse bright voxels in MRA permit substantial undersampling in MRI data acquisition, allowing simultaneous high...

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Bibliographic Details
Published in:Magnetic resonance in medicine 2004-07, Vol.52 (1), p.14-18
Main Authors: Zhu, He, Buck, David G., Zhang, Zhenghui, Zhang, Honglei, Wang, Paul, Stenger, V. Andrew, Prince, Martin R., Wang, Yi
Format: Article
Language:English
Subjects:
Arteriosclerosis - diagnosis
atherosclerosis
Contrast Media
gadolinium
Gadolinium DTPA
Humans
Image Processing, Computer-Assisted
Leg - blood supply
magnetic resonance angiography
Magnetic Resonance Angiography - methods
peripheral artery
time resolved MRA
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Summary:Contrast‐enhanced magnetic resonance angiography (CE‐MRA) requires high spatial resolution to demonstrate detailed vasculature and high temporal resolution to capture the contrast bolus. Sparse bright voxels in MRA permit substantial undersampling in MRI data acquisition, allowing simultaneous high temporal and spatial resolution. We developed a time‐resolved 3D MRA technique using the efficient spiral sampling trajectory, and performed off‐resonance corrections using inhomogeneity field maps. View sharing and sliding window reconstruction were utilized to generate high temporal resolution. High‐resolution 3D angiograms were generated at 1–2 s per frame, with a 5–8 ml gadolinium dose, in patients with vascular disease. Magn Reson Med 52:14–18, 2004. © 2004 Wiley‐Liss, Inc.
ISSN:0740-3194
1522-2594
DOI:10.1002/mrm.20167