NDLI: Combined parallel and partial fourier MR reconstruction for accelerated 8-channel hyperpolarized carbon-13 in vivo magnetic resonance Spectroscopic imaging (MRSI)

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Combined parallel and partial fourier MR reconstruction for accelerated 8-channel hyperpolarized carbon-13 in vivo magnetic resonance Spectroscopic imaging (MRSI)

Content Provider	Scilit
Author	Md, Michael A. Ohliger Larson, Peder E. Z. Bok, Robert A. Shin, Peter Hu, Simon Tropp, James Robb, Fraser Carvajal, Lucas Nelson, Sarah J. Kurhanewicz, John Vigneron, Daniel B.
Copyright Year	2013
Description	Journal: Journal of Magnetic Resonance Imaging (JMRI) Purpose: To implement and evaluate combined parallel magnetic resonance imaging (MRI) and partial Fourier acquisition and reconstruction for rapid hyperpolarized carbon‐13 $(^{13}$C) spectroscopic imaging. Short acquisition times mitigate hyperpolarized signal losses that occur due to T1 decay, metabolism, and radiofrequency (RF) saturation. Human applications additionally require rapid imaging to permit breath‐holding and to minimize the effects of physiologic motion. Materials and Methods: Numerical simulations were employed to validate and characterize the reconstruction. In vivo MR spectroscopic images were obtained from a rat following injection of hyperpolarized$ ^{13}$C pyruvate using an 8‐channel array of carbon‐tuned receive elements. Results: For small spectroscopic matrix sizes, combined parallel imaging and partial Fourier undersampling resulted primarily in decreased spatial resolution, with relatively less visible spatial aliasing. Parallel reconstruction qualitatively restored lost image detail, although some pixel spectra had persistent numerical error. With this technique, a 30 × 10 × 16 matrix of 4800 3D MR spectroscopy imaging voxels from a whole rat with isotropic 8 $mm^{3}$ resolution was acquired within 11 seconds. Conclusion: Parallel MRI and partial Fourier acquisitions can provide the shorter imaging times and wider spatial coverage that will be necessary as hyperpolarized$ ^{13}$C techniques move toward human clinical applications. J. Magn. Reson. Imaging 2013;38:701–713.
Related Links	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3759833/pdf
Ending Page	713
Page Count	13
Starting Page	701
e-ISSN	15222586
DOI	10.1002/jmri.23989
Journal	Journal of Magnetic Resonance Imaging (JMRI)
Issue Number	3
Volume Number	38
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2013-01-04
Access Restriction	Open
Subject Keyword	Journal: Journal of Magnetic Resonance Imaging (JMRI) Radiology, Nuclear Medicine and Imaging
Content Type	Text
Resource Type	Article

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