Diffusion-weighted MR imaging in acute stroke: theoretic considerations and clinical applications

Area of Science:

• Neuroimaging
• Radiology
• Medical Physics

Background:

• Diffusion-weighted imaging (DWI) is a key MRI technique.
• Current primary clinical application is in acute cerebral infarction detection.
• DWI offers insights beyond visual inspection of standard MRI sequences.

Purpose of the Study:

• To review the established and emerging clinical applications of DWI.
• To highlight DWI's potential in quantitative analysis and characterizing intracranial abnormalities.
• To project the future growth of DWI in clinical practice and research.

Main Methods:

• Review of existing literature on diffusion-weighted imaging applications.
• Analysis of DWI's role in evaluating cerebral infarction.
• Exploration of DWI's utility in quantitative analysis using apparent diffusion coefficient (ADC) maps for detecting subtle biologic changes.
• Assessment of DWI's capability in characterizing intracranial pathologies such as abscesses and tumors.

Main Results:

• DWI demonstrates high efficacy in the evaluation of cerebral infarction.
• Quantitative analysis via ADC maps reveals biologic changes not visible on conventional imaging.
• DWI aids in differentiating various intracranial abnormalities, including tumors and abscesses.

Conclusions:

• Diffusion-weighted imaging is a powerful tool for diagnosing cerebral infarction.
• Emerging applications in quantitative analysis and abnormality characterization are expanding DWI's utility.
• The clinical and research applications of DWI are expected to grow, enhancing understanding of tissue physiology.