Location

Snowbird, UT, USA

Start Date

1-1-1999 12:00 AM

Description

Palpation is a diagnostic tool that is commonly used by physicians to assess the elasticity of tissues. A medical imaging technique capable of quantitatively mapping tissue elasticity is of clinical interest because disease can affect the elastic properties of tissue [1]. Magnetic Resonance Elastography (MRE) [2, 3] is currently being developed to quantitatively image the elastic properties of tissue. MRE measures the displacements caused by a shear wave propagating within tissue. From the MRE displacement data, the propagation characteristics of the shear wave are determined and used to quantify elastic properties of the tissue. The MRE technique has three components: methods for generating acoustic shear waves, magnetic resonance imaging sequences capable of imaging cyclic displacements, and image processing techniques to determine phase velocity. The focus of this work has been to develop robust image processing techniques that will accurately relate measured shear velocity to tissue elasticity.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

18B

Chapter

Chapter 5: Engineered Materials

Section

Biomedical Applications

Pages

1593-1600

DOI

10.1007/978-1-4615-4791-4_205

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

3D FFT Mode Filtering for Phase Gradient Velocity Measurements

Snowbird, UT, USA

Palpation is a diagnostic tool that is commonly used by physicians to assess the elasticity of tissues. A medical imaging technique capable of quantitatively mapping tissue elasticity is of clinical interest because disease can affect the elastic properties of tissue [1]. Magnetic Resonance Elastography (MRE) [2, 3] is currently being developed to quantitatively image the elastic properties of tissue. MRE measures the displacements caused by a shear wave propagating within tissue. From the MRE displacement data, the propagation characteristics of the shear wave are determined and used to quantify elastic properties of the tissue. The MRE technique has three components: methods for generating acoustic shear waves, magnetic resonance imaging sequences capable of imaging cyclic displacements, and image processing techniques to determine phase velocity. The focus of this work has been to develop robust image processing techniques that will accurately relate measured shear velocity to tissue elasticity.