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The brain is the most complex organ in the human body. It consists of four main parts: the cerebrum, diencephalon, cerebellum, and brainstem.
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Cerebral White Matter Tract Anatomy.

Asthik Biswas1, Pradeep Krishnan2, Logi Vidarsson2

  • 1Department of Diagnostic Imaging, The Hospital for Sick Children, 555, University Avenue, Toronto, Ontario M5G1X8, Canada; Department of Medical Imaging, University of Toronto, Toronto, Ontario M5G1X8, Canada; Department of Radiology, Great Ormond Street Hospital for Children NHS Trust, London WC1N3JH, United Kingdom.

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Summary

This review details cerebral white matter anatomy using advanced MR imaging and diffusion tensor imaging. Understanding white matter connectivity is crucial for diagnosing and treating various neurological and cognitive disorders.

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AnatomyDTIMRINeuroimagingWhite matter

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Area of Science:

  • Neuroimaging
  • Neuroanatomy
  • Neurology

Background:

  • Detailed in vivo depiction of white matter tracts is now possible with advanced MR imaging techniques.
  • Understanding white matter structure and connectivity is vital for various neurological conditions, including leukodystrophies, demyelinating disorders, neoplasms, and cognitive/neuropsychiatric disorders.
  • Advanced function-preserving surgical techniques necessitate a thorough understanding of white matter anatomy for precise surgical planning in tumor and epilepsy cases.

Purpose of the Study:

  • To describe cerebral white matter anatomy.
  • To highlight the utility of conventional MRI and diffusion tensor imaging (DTI) in visualizing white matter.
  • To emphasize the clinical relevance of white matter tractography in neurological and surgical contexts.

Main Methods:

  • Review of current literature on MR imaging techniques for white matter assessment.
  • Description of conventional MRI sequences for evaluating white matter pathology.
  • Explanation of diffusion tensor imaging (DTI) principles and its application in mapping white matter tracts.

Main Results:

  • Conventional MRI provides foundational anatomical detail of white matter.
  • Diffusion tensor imaging (DTI) enables detailed in vivo tractography, revealing structural connectivity.
  • Integration of conventional MRI and DTI offers comprehensive insights into white matter integrity and organization.

Conclusions:

  • Advanced MR imaging, particularly DTI, significantly enhances the understanding of cerebral white matter anatomy and connectivity.
  • Accurate visualization of white matter tracts is essential for diagnosing white matter diseases and for neurosurgical planning.
  • This review underscores the importance of MR imaging in both clinical diagnosis and surgical guidance related to white matter.