Spatial localization in nuclear magnetic resonance spectroscopy

SF Keevil - Physics in Medicine & Biology, 2006 - iopscience.iop.org
The ability to select a discrete region within the body for signal acquisition is a fundamental
requirement of in vivo NMR spectroscopy. Ideally, it should be possible to tailor the selected …

Fast image reconstruction with L2‐regularization

B Bilgic, I Chatnuntawech, AP Fan… - Journal of magnetic …, 2014 - Wiley Online Library
Purpose We introduce L2‐regularized reconstruction algorithms with closed‐form solutions
that achieve dramatic computational speed‐up relative to state of the art L1‐and L2‐based …

Removal of nuisance signals from limited and sparse 1H MRSI data using a union‐of‐subspaces model

C Ma, F Lam, CL Johnson… - Magnetic resonance in …, 2016 - Wiley Online Library
Purpose To remove nuisance signals (eg, water and lipid signals) for 1H MRSI data
collected from the brain with limited and/or sparse (k, t)‐space coverage. Methods A union …

High‐resolution 1H‐MRSI of the brain using short‐TE SPICE

C Ma, F Lam, Q Ning, CL Johnson… - Magnetic resonance in …, 2017 - Wiley Online Library
Purpose To improve signal‐to‐noise ratio (SNR) for high‐resolution spectroscopic imaging
using a subspace‐based technique known as SPectroscopic Imaging by exploiting …

Lipid suppression in CSI with spatial priors and highly undersampled peripheral k‐space

B Bilgic, B Gagoski, T Kok… - Magnetic resonance in …, 2013 - Wiley Online Library
Mapping 1H brain metabolites using chemical shift imaging is hampered by the presence of
subcutaneous lipid signals, which contaminate the metabolites by ringing due to limited …

Echo planar spectroscopic imaging

RV Mulkern, LP Panych - Concepts in Magnetic Resonance, 2001 - Wiley Online Library
Echo planar spectroscopic imaging (EPSI) allows for mapping one spatial dimension and
the spectroscopic dimension in a single readout. Modern clinical magnetic resonance …

Three‐dimensional MR spectroscopic imaging using adiabatic spin echo and hypergeometric dual‐band suppression for metabolic mapping over the entire brain

M Esmaeili, TF Bathen, BR Rosen… - Magnetic resonance …, 2017 - Wiley Online Library
Purpose Large lipid and water signals in MR spectroscopic imaging (MRSI) complicate brain
metabolite quantification. In this study, we combined adiabatic hypergeometric dual‐band …

Proton metabolic mapping of the brain at 7 T using a two‐dimensional free induction decay–echo‐planar spectroscopic imaging readout with lipid suppression

KM Nam, AD Hendriks, VO Boer… - NMR in …, 2022 - Wiley Online Library
The increased signal‐to‐noise ratio (SNR) and chemical shift dispersion at high magnetic
fields (≥ 7 T) have enabled neuro‐metabolic imaging at high spatial resolutions. To avoid …

Truncation artifact reduction in spectroscopic imaging using a dual-density spiral k-space trajectory

S Sarkar, K Heberlein, X Hu - Magnetic resonance imaging, 2002 - Elsevier
Truncation artifacts arise in magnetic resonance spectroscopic imaging (MRSI) of the human
brain due to limited coverage of k-space necessitated by low SNR of metabolite signal and …

Compartmentalized low‐rank recovery for high‐resolution lipid unsuppressed MRSI

I Bhattacharya, M Jacob - Magnetic resonance in medicine, 2017 - Wiley Online Library
Purpose To introduce a novel algorithm for the recovery of high‐resolution magnetic
resonance spectroscopic imaging (MRSI) data with minimal lipid leakage artifacts, from dual …