Since 2020, aggregated from related topics
Diffusion-weighted imaging (DWI) is a magnetic resonance imaging (MRI) technique that measures the random motion of water molecules in biological tissues. This technique is particularly useful in detecting abnormalities or changes in cellular structure, as water diffusion is restricted in tissues with densely packed cells or structures. DWI is commonly used in neurological imaging to detect acute stroke, brain tumors, and demyelinating diseases. It is also used in oncology for tumor characterization and response assessment to treatment. DWI can provide valuable information about tissue microstructural integrity and is a powerful tool in clinical diagnosis and research.