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Diffusion-weighted magnetic resonance imaging

Diffusion-weighted magnetic resonance imaging (DWI or DW-MRI) is the use of specific MRI sequences as well as software that generates images from the resulting data that uses the diffusion of water molecules to generate contrast in MR images. It allows the mapping of the diffusion process of molecules, mainly water, in biological tissues, in vivo and…

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Applications

Perfusion MRI Penumbra Wernicke encephalopathy MELAS syndrome Oncology

24 related topics

Diffusion tensor imaging

Neurites Dendrites Symmetric matrix Scalars Vector

24 related topics

Mechanism

MRI Moieties Gyromagnetic ratio Le Bihan Fick's first law

15 related topics

Introduction

Voxel T1 T2 relaxation Axonal Non-small-cell lung cancer

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MeSH: D038524

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Overview

MRI sequences MRI sequence
Contrast Contrast (vision)
Diffusion
Biological tissues
In vivo
Macromolecules Macromolecule
Membranes Biological membrane
White matter
Tractography

Introduction

Voxel
T1 T1 relaxation
T2 relaxation
Axonal Axon
Non-small-cell lung cancer Non-small cell lung cancer
Positron emission tomography
Grey matter
Cerebral cortex
Axons
Anisotropy
Brain tumors Brain tumor
Multiple sclerosis
Edema
Strokes Stroke
Tensor
Fractional anisotropy

Mechanism

MRI
Moieties Moiety (chemistry)
Gyromagnetic ratio
Le Bihan Denis Le Bihan
Fick's first law Fick's laws of diffusion
Gradient
Diffusion coefficient
Continuity equation
Divergence
Diffusion equation
Magnetization
Bloch equation
H.C. Torrey H.C. Torrey?action=edit&redlink=1
Bloch equations
Bloch-Torrey equation

ADC image

T2 weighting T2-weighted imaging
Cerebral infarction

Diffusion tensor imaging

Applications

Perfusion MRI
Penumbra Penumbra (medicine)
Wernicke encephalopathy
MELAS syndrome
Oncology
Stage Cancer staging
Myelin
Magnetic field
Lesions Lesion
Diffuse traumatic brain injury Traumatic brain injury
Tumors Tumor
Brain tumors
Corticospinal tract
Motor cortex
Spinal cord
Nerves Nerve
Alzheimer's disease
Dementia
Neural networks Neural network
Connectomics
Brachial plexus
DTI Diffusion tensor imaging
Cubital Tunnel Syndrome
Carpal Tunnel Syndrome

Research

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Diffusion-weighted magnetic resonance imaging

Nodes103

Edges102

Triples14

Avg. degree1.98

Density0.019417

Components1

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Diffusion-weighted magnetic resonance imaging

Top relations

MeSH · 1

Diffusion-weighted magnetic resonance imaging → D038524

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Important terminology

diffusion tensor ellipsoid mri voxel displaystyle water imaging dwi dti anisotropy gradient brain matrix also adc vector direction three images

Entity relationships Subject–Predicate–Object triples

Subject	Predicate	Object	Confidence	Src
Diffusion-weighted magnetic resonance imaging	MeSH	D038524	1.00	infobox
T1 or T2 relaxation rates	instance of	DWI is more sensitive to early changes after a stroke than more traditional MRI measurements	0.80	text
the fractional anisotropy	instance of	diffusion anisotropy measures	0.80	text
the prostate.In DTI	instance of	as well as other tissues	0.80	text
each voxel has one or more pairs of parameters	instance of	as well as other tissues	0.80	text
cerebrospinal fluid	instance of	to gather information about the process of diffusion in each voxel of the tissue.In an isotropic medium	0.80	text
water molecules are moving due to diffusion	instance of	to gather information about the process of diffusion in each voxel of the tissue.In an isotropic medium	0.80	text
they move at equal rates in all directions	instance of	to gather information about the process of diffusion in each voxel of the tissue.In an isotropic medium	0.80	text
cell membranes	instance of	When various barriers and restricting factors	0.80	text
microtubules interfere with the free diffusion	instance of	When various barriers and restricting factors	0.80	text
we are measuring an	instance of	When various barriers and restricting factors	0.80	text
diffusion kurtosis imaging	instance of	Some more specialized diffusion MRI techniques	0.80	text

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