T 1 ‐corrected quantitative chemical shift‐encoded MRI

Quantitative mapping of chemical compositions with MRI using compressed sensing.

In this work, a magnetic resonance (MR) imaging method for accelerating the acquisition time of two dimensional concentration maps of different chemical species in mixtures by the use of compressed sensing (CS) is presented. Whilst 2D-concentration maps with a high spatial resolution are prohibitively time-consuming to acquire using full k-space sampling techniques, CS enables the reconstructio...

Application of Quantitative MRI for Brain Tissue Segmentation at 1.5 T and 3.0 T Field Strengths

BACKGROUND Brain tissue segmentation of white matter (WM), grey matter (GM), and cerebrospinal fluid (CSF) are important in neuroradiological applications. Quantitative Mri (qMRI) allows segmentation based on physical tissue properties, and the dependencies on MR scanner settings are removed. Brain tissue groups into clusters in the three dimensional space formed by the qMRI parameters R1, R2 a...

Depth-corrected versus Non Depth-corrected Gfr Determination by Quantitative Renal Scintigraphy in the Dog

Accelerated, motion-corrected high-resolution intravascular MRI at 3T.

Audience: Interventionalists, and those interested in atherosclerosis and intravascular MR imaging. Purpose. Current speeds for intravascular (IV) MRI and MRI endoscopy are limited to ~2frames/s at 3T, rendering high-resolution (~100μm) images susceptible to degradation by physiological motion on the order of mm/ms. Here, using projection reconstruction we: (A) reduce sensitivity to motion from...

Fast, iterative, field-corrected image reconstruction for MRI

Magnetic field inhomogeneities cause distortions in the reconstructed images for non-cartesian k-space MRI (using spirals, for example). Several noniterative methods are currently used to compensate for the off-resonance during the reconstruction, but these methods rely on the assumption of a smoothly varying field map. Recently, iterative methods have been proposed that do not rely on this ass...