Clinical applications of diffusion-weighted sequence in brain imaging: beyond stroke

Area of Science:

• Neuroimaging
• Radiology
• Neurology

Background:

• Diffusion-weighted imaging (DWI) is a standard MRI technique primarily used for early stroke detection.
• Its application extends beyond stroke, offering valuable insights into diverse central nervous system pathologies.
• Certain neurological conditions can acutely manifest symptoms mimicking stroke, necessitating broader diagnostic tools.

Purpose of the Study:

• To provide a concise overview of diffusion imaging techniques.
• To comprehensively review the utility of DWI in diagnosing neurological conditions other than stroke.
• To highlight DWI's role in establishing specific diagnoses and guiding management for non-stroke CNS disorders.

Main Methods:

• Literature review focusing on diffusion imaging principles.
• Analysis of studies detailing DWI applications in various neurological diseases.
• Synthesis of findings on DWI's diagnostic and therapeutic implications beyond acute stroke.

Main Results:

• DWI is instrumental in identifying early ischemic changes characteristic of stroke.
• The review details how DWI aids in the diagnosis of conditions such as encephalitis, meningitis, and tumors.
• Specific DWI patterns are presented for differentiating stroke mimics from true ischemic events.

Conclusions:

• DWI is a versatile neuroimaging tool with significant diagnostic value beyond stroke.
• Understanding DWI applications is essential for neurologists and radiologists managing a wide spectrum of CNS disorders.
• This review underscores the importance of DWI in the prompt and accurate diagnosis of acute neurological conditions.