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Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Quantitative Magnetic Resonance Imaging of Skeletal Muscle Disease

Published on: December 18, 2016

Simultaneous MR elastography and diffusion acquisitions: diffusion-MRE (dMRE).

Ziying Yin¹, Richard L Magin, Dieter Klatt

¹The Richard and Loan Hill Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois, USA.

Magnetic Resonance in Medicine

|March 21, 2014

Summary

This summary is machine-generated.

A new diffusion-MR elastography (dMRE) technique enables simultaneous measurement of tissue stiffness and diffusion. This combined approach is feasible and shows no interference, offering a more efficient MRI method.

Keywords:

diffusion elastography imaging

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Area of Science:

Magnetic Resonance Imaging
Biomedical Engineering
Medical Physics

Background:

Magnetic Resonance Elastography (MRE) measures tissue stiffness.
Diffusion MRI measures water molecule diffusion.
Concurrent acquisition of both is challenging.

Purpose of the Study:

Introduce a novel technique, diffusion-MRE (dMRE), for simultaneous MRE and diffusion MRI.
Validate dMRE's feasibility and performance.

Main Methods:

dMRE encodes motion and diffusion into MR signal phase and magnitude using bipolar gradients.
Pulse sequence timing optimizes sensitivity to intravoxel motions.
A tissue phantom was used for validation, comparing dMRE with conventional methods.

Main Results:

dMRE accurately measured apparent diffusion coefficient (ADC) values in phantom beads.
Shear stiffness measurements from dMRE closely matched conventional MRE results.
No observable interference between diffusion and MRE components was detected.

Conclusions:

Simultaneous MRE and diffusion MRI acquisition using dMRE is feasible.
The dMRE technique offers a potential for more efficient MRI protocols.
This method paves the way for combined biomechanical and microstructural tissue assessment.