Diffusion weighted imaging(DWI)is a noninvasive functional imaging method that analyzes the internal structure and tissue components of lesions by detecting the diffusion movement of water molecules in human tissues.At present,single-shot echo planar imaging(ss-EPI)DWI technology is mostly used clinically,which has fast imaging speed but poor image quality.With the emergence of new DWI-related technologies,image quality and application range can be further improved.This article reviews the imaging theory,technical progress and clinical application of new DWI-related technologies.
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