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Imaging Studies I: CT and MRI

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
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Computed Tomography (CT) scan:
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Diffusion

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Diffusion

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Reliability and Validity

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Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.

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Updated: Feb 8, 2026

Diffusion Imaging in the Rat Cervical Spinal Cord

Diffusion Imaging in the Rat Cervical Spinal Cord

Published on: April 7, 2015

Validation strategies for the interpretation of microstructure imaging using diffusion MRI.

Tim B Dyrby¹, Giorgio M Innocenti², Martin Bech³

¹Danish Research Centre for Magnetic Resonance, Center for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark; Department of Applied Mathematics and Computer Science, Technical University of Denmark, Kongens Lyngby, Denmark.

|June 20, 2018

Summary

Diffusion MRI (dMRI) offers non-invasive insights into brain microanatomy, crucial for diagnostics and neuroscience. Validating dMRI methods through interdisciplinary collaboration is key to improving accuracy for clinical applications.

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Last Updated: Feb 8, 2026

Diffusion Imaging in the Rat Cervical Spinal Cord

Diffusion Imaging in the Rat Cervical Spinal Cord

Published on: April 7, 2015

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery

Published on: July 5, 2021

Diffusion Tensor Magnetic Resonance Imaging in Chronic Spinal Cord Compression

Diffusion Tensor Magnetic Resonance Imaging in Chronic Spinal Cord Compression

Published on: May 7, 2019

Area of Science:

Neuroimaging
Biophysics
Computational Neuroscience

Background:

Diffusion MRI (dMRI) holds promise for non-invasively assessing brain microanatomy, like cell bodies and neurites, previously only accessible via histology or biopsies.
Current dMRI measures are indirect estimations limited by image resolution, making validation crucial for reliable interpretation.

Purpose of the Study:

To review current literature on extracting microanatomical information from dMRI data.
To highlight the need for integrative work across anatomical scales to validate new dMRI methods.
To encourage interdisciplinary collaboration and data sharing for advancing dMRI specificity.

Main Methods:

Literature review of current dMRI techniques and validation strategies.
Analysis of mathematical models for microstructural interpretation of dMRI data.
Discussion of integrative approaches across anatomical length scales.

Main Results:

dMRI can potentially provide microanatomical information non-invasively, advancing diagnostics and neuroscience.
Validation of dMRI methods is complex, depending on experimental parameters, models, and implementation.
Integrative validation across length scales is essential for trusting new dMRI techniques.

Conclusions:

Non-invasive microanatomical information from dMRI could revolutionize neurological disease diagnosis and understanding of brain development.
Robust validation through interdisciplinary efforts and data sharing is critical for improving the specificity and reliability of future dMRI methods.