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Applications of diffusion-weighted and diffusion tensor MRI to white matter diseases - a review
Mark A Horsfield1, Derek K Jones
1Division of Medical Physics, University of Leicester, Leicester Royal Infirmary, UK. mah5@le.ac.uk
Abstract:
This paper reviews the current applications of diffusion-weighted and diffusion tensor MRI in diseases of the brain white matter. The contribution that diffusion-weighted imaging has made to our understanding of white matter diseases is critically appraised. The quantitative nature of diffusion MRI is one of its major attractions; however, this is offset by the more advanced hardware required to collect diffusion-weighted images reliably, and the more complex processing to produce quantitative parametric diffusion images. With the now common availability of scanners equipped to perform echo-planar imaging, the acquisition of diffusion tensor images is sure to become more widespread and routine.
Insights
Diffusion MRI, including diffusion-tensor imaging, offers valuable insights into brain white matter diseases. While advanced hardware and complex processing are needed, its routine use is increasing with improved MRI technology.
Area of Science:
- Neuroimaging
- Radiology
- Medical Physics
Background:
- White matter diseases affect the brain's structural integrity.
- Diffusion MRI techniques provide unique insights into tissue microstructure.
Purpose of the Study:
- To review current applications of diffusion-weighted imaging (DWI) and diffusion tensor imaging (DTI) in brain white matter diseases.
- To critically appraise the contribution of DWI to understanding these conditions.
Main Methods:
- Review of existing literature on diffusion MRI applications in white matter diseases.
- Critical appraisal of the benefits and challenges of DWI and DTI.
Main Results:
- Diffusion MRI offers quantitative insights into white matter pathology.
- Challenges include requirements for advanced hardware and complex image processing.
- Increasing availability of echo-planar imaging facilitates routine DTI acquisition.
Conclusions:
- Diffusion MRI is a powerful tool for studying white matter diseases.
- Technological advancements are making diffusion MRI more accessible and routine for clinical applications.