Premium
Three‐dimensional reconstruction of limited‐view projections for contrast‐enhanced magnetic resonance angiography at high temporal and spatial resolution
Author(s) -
Huang Yuexi,
Gurr David,
Wright Graham A.
Publication year - 2006
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/mrm.20727
Subject(s) - a priori and a posteriori , image resolution , temporal resolution , projection (relational algebra) , data set , contrast (vision) , biplane , imaging phantom , computer science , iterative reconstruction , artificial intelligence , computer vision , set (abstract data type) , resolution (logic) , magnetic resonance angiography , magnetic resonance imaging , pattern recognition (psychology) , algorithm , physics , optics , radiology , materials science , medicine , philosophy , epistemology , composite material , programming language
The feasibility of reconstructing three‐dimensional (3D) MRI data sets from limited‐view projections is investigated in phantom and in vivo animal studies to improve the temporal resolution of magnetic resonance angiography without sacrificing spatial resolution. Thirty‐two pairs of orthogonal biplane projections are acquired in an interleaved manner during the first pass of a contrast agent. The full data set is reconstructed as a priori 3D information. Each pair of projections is then reconstructed into an individual 3D data set based on a correlation analysis with the a priori data set. In this way, time‐resolved 3D data sets at 1‐ to 2‐s time intervals are reconstructed with submillimeter spatial resolution. Artifacts are limited if the image is simply structured or sparse and if SNR is sufficient in the projection images. With this technique, both high temporal and spatial resolution can be achieved simultaneously. Magn Reson Med, 2005. © 2005 Wiley‐Liss, Inc.