Unipolar MR elastography: Theory, numerical analysis and implementation

Data Reduction Analysis for Brain MR Elastography

Introduction Magnetic resonance elastography (MRE) is a method for quantitatively assessing the stiffness of tissue non-invasively by using phase contrast MRI to visualize and measure the propagation speed with which shear waves travel through the tissue of interest [1]. There is an increasing interest in applying the technology as a way to characterize the mechanical properties of the brain [2...

Intensity speckle MR elastography

Introduction: Magnetic resonance elastography (MRE) allows the measurement of the mechanical properties of living tissue by combining shear waves and motion sensitive MRI [1]. In classical MRE, shear wave images are evaluated using an appropriate wave inversion technique for calculating an estimate of the spatial distribution of the shear modulus within the region of interest [2]. Problem: Wave...

MR Elastography Analysis of Glioma Stiffness and IDH1-Mutation Status.

BACKGROUND AND PURPOSE Our aim was to noninvasively evaluate gliomas with MR elastography to characterize the relationship of tumor stiffness with tumor grade and mutations in the isocitrate dehydrogenase 1 (IDH1) gene. MATERIALS AND METHODS Tumor stiffness properties were prospectively quantified in 18 patients (mean age, 42 years; 6 women) with histologically proved gliomas using MR elastog...

Optical Elastography: From Theory to Clinical Applications

MR Elastography of Peritoneal Tumor

Background: MRE is a phase contrast MRI technique that evaluates the stiffness of tissues by directly visualizing and measuring propagated mechanical shear waves in tissues. MRE generates quantitative measurements and colorized spatial maps of shear wave displacement. The initial wave images are processed to generate an elastogram, which displays the quantitative values of the shear modulus of ...