Ultrashort TE spectroscopic imaging (UTESI) using complex highly-constrained backprojection with local reconstruction (HYPR LR)

Recently, the highly‐constrained backprojection (HYPR) and HYPR with local reconstruction (HYPR LR) methods have been introduced to reconstruct magnitude images from a series of highly undersampled data while preserving high spatial and temporal resolution and high signal‐to‐noise ratio (SNR) in app...

Full description

Saved in:
Bibliographic Details
Published in:Magnetic resonance in medicine 2009-07, Vol.62 (1), p.127-134
Main Authors: Wang, Kang, Du, Jiang, O'Halloran, Rafael, Fain, Sean, Kecskemeti, Steven, Wieben, Oliver, Johnson, Kevin M., Mistretta, Charles
Format: Article
Language:English
Subjects:
Algorithms
Animals
fast MRI
Feasibility Studies
HYPR LR
Image Enhancement - methods
Image Interpretation, Computer-Assisted - methods
Imaging, Three-Dimensional - methods
Magnetic Resonance Imaging - methods
Magnetic Resonance Spectroscopy - methods
projection reconstruction
Reproducibility of Results
Sensitivity and Specificity
spectroscopy
Swine
Tibia - anatomy & histology
UTESI
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Recently, the highly‐constrained backprojection (HYPR) and HYPR with local reconstruction (HYPR LR) methods have been introduced to reconstruct magnitude images from a series of highly undersampled data while preserving high spatial and temporal resolution and high signal‐to‐noise ratio (SNR) in applications with spatiotemporal correlations. However, these conventional HYPR algorithms are limited to the generation of magnitude images and, therefore, have limitations in their potential applications. In this work, the HYPR LR algorithm has been modified to extend the use of algorithms in the HYPR family to applications that require processing of complex data, such as MR chemical shift imaging (CSI) or spectroscopic imaging. The proposed method processes the magnitude information the same way as in original HYPR LR processing. In addition, it improves the phase images by subtracting the phase map of a synthesized composite image. The feasibility and efficiency of this algorithm has been demonstrated on CSI of cortical bone, Achilles tendon, and a healthy volunteer on a clinical 3T scanner. Magn Reson Med, 2009. © 2009 Wiley‐Liss, Inc.
ISSN:0740-3194
1522-2594
1522-2594
DOI:10.1002/mrm.21986