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Magnetic Resonance Imaging

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...

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Updated: Dec 28, 2025

Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases

Diffusion Tensor Magnetic Resonance Imaging in the Analysis of Neurodegenerative Diseases

Published on: July 28, 2013

Direction-averaged diffusion-weighted MRI signal using different axisymmetric B-tensor encoding schemes.

Maryam Afzali¹, Santiago Aja-Fernández^1,2, Derek K Jones^1,3

¹Cardiff University Brain Research Imaging Centre (CUBRIC), School of Psychology, Cardiff University, Cardiff, United Kingdom.

Magnetic Resonance in Medicine

|February 22, 2020

Summary

This summary is machine-generated.

Diffusion-weighted MRI signal decay follows a power-law in specific tissue geometries and encoding types. This study confirms theoretical predictions for planar tensor encoding (PTE) and linear tensor encoding (LTE) in vivo.

Failed At:

2026-06-19T13:47:49.684945+00:00

Keywords:

B-tensor encoding diffusion-weighted MRI direction-averaged diffusion signal high b-value power-law

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