Corpus ID: 17828364

Fast magnetic resonance spectroscopic imaging using RF coil arrays

  title={Fast magnetic resonance spectroscopic imaging using RF coil arrays},
  author={B. Gagoski},
Conventional Magnetic Resonance Spectroscopic Imaging (MRSI) suffers from both low signal-to-noise (SNR), as well as long acquisition times. The development of high-fidelity gradient coils has opened opportunities for fast k-space encoding schemes that are already used in structural imaging. At the same time, receive-coil arrays using 4 and 23 channels have been developed and reported to produce improved SNR over conventional quadrature detection by single coils. Fast spectroscopic imaging… Expand
1 Citations
Improved magnetic resonance chemical shift imaging at 3 Tesla using a 32-channel integrated RF-shim coil array
In vivo chemical shift imaging is an imaging modality which uses the so-called chemicalshift phenomenon to quantitate brain metabolites spatially, therefore renders the study of brain metabolism andExpand


SENSE: Sensitivity encoding for fast MRI
The problem of image reconstruction from sensitivity encoded data is formulated in a general fashion and solved for arbitrary coil configurations and k‐space sampling patterns and special attention is given to the currently most practical case, namely, sampling a common Cartesian grid with reduced density. Expand
Snapshot flash mri. applications to t1, t2, and chemical‐shift imaging
  • A. Haase
  • Chemistry, Medicine
  • Magnetic resonance in medicine
  • 1990
Extensions to real‐time MRI of blood vessels, diffusion coefficients, combination with two‐dimensional MR spectroscopy experiments, and other nuclei are discussed. Expand
A general treatment of NMR imaging with chemical shifts and motion
A general treatment of nuclear magnetic resonance imaging (MRI) and spectroscopic imaging (MRSI), which takes into account the effects of chemical shift, motion, field inhomogeneity, and relaxationExpand
Volumetric spectroscopic imaging with spiral‐based k‐space trajectories
Spiral‐based k‐space trajectories were applied in a spectroscopic imaging sequence with time‐varying readout gradients to collect volumetric chemical shift information to automatically phase the spectra and to aid the reconstruction of metabolite maps. Expand
A fast spectroscopic imaging method using a blipped phase encode gradient
A new time‐varying gradient method is presented that offers a decrease in scan time (when SNR is sufficient), simplifies the reconstruction problem by retaining an essentially rectilinear sampling grid, and makes efficient use of scan time by minimizing gradient reversals. Expand
Acquistion and Accuracy in Rapid NMR Imaging Methods
  • D. Twieg
  • Mathematics, Medicine
  • Magnetic resonance in medicine
  • 1985
It is shown that ideal observer performance can differ significantly between EPI and SEPI for some visual tasks, using the same NMR imaging system, and it need not degrade images if appropriate reconstruction computations are used. Expand
Simultaneous spatial and spectral selective excitation
Using a k‐space interpretation of small‐tip excitation, a single excitation pulse has been designed that is simultaneously selective in space and resonant frequency that has been applied to a rapid gradient‐echo imaging sequence that forms both water and fat images within a breath‐holding interval. Expand
Lipid‐suppressed single‐and multisection proton spectroscopic imaging of the human brain
A pulse sequence that uses inversion recovery for lipid suppression and a spectral‐spatial refocusing pulse for water suppression is introduced to provide water suppression insensitive to a reasonable range of B0 and B1 inhomogeneities. Expand
Consistent fat suppression with compensated spectral‐spatial pulses
The spectral‐spatial FSE sequence delivers clinically lower fat signal with better uniformity than spectrally selective pre‐saturation techniques, which is important with fast imaging techniques such as echo‐planar, spiral, and fast spin‐echo T2‐weighted imaging. Expand
Theory and application of array coils in MR spectroscopy
The optimization of the signal‐to‐noise ratio from an array of coils is developed by considering the efficiency of a phased array transmit coil, and should be useful in future considerations of transmit phased array coils for MR spectroscopy. Expand