Three dimensional shear wave scattering MR elastography
نویسندگان
چکیده
Introduction: Magnetic resonance elastography (MRE) is a non invasive method that combines externally applied vibrations with the motion sensitivity of MRI to measure the shear elasticity soft tissues [1]. In MRE this is traditionally achieved by solving an inverse problem with MRE shear wave images as input data [2]. A complementary approach, which does not require the solution of an inverse problem, is based on an analysis of the distribution of shear wave intensity inside measured MRE wave images. The sensitivity of this intensity speckle analysis with respect to shear wave scattering was previously studied for the case of scalar waves in a two dimensional (2D) scenario of shear horizontal waves [3].
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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...
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