Journal
WORLD JOURNAL OF RADIOLOGY
Volume 8, Issue 9, Pages 785-798Publisher
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.4329/wjr.v8.i9.785
Keywords
Diffusion weighted imaging; Diffusion tensor imaging; Onco-imaging; Neuro-imaging
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Diffusion weighted imaging (DWI) is a method of signal contrast generation based on the differences in Brownian motion. DWI is a method to evaluate the molecular function and micro-architecture of the human body. DWI signal contrast can be quantified by apparent diffusion coefficient maps and it acts as a tool for treatment respon se evaluation and assessment of disease progression. Ability to detect and quantify the anisotropy of diffusion leads to a new paradigm called diffusion tensor imaging (DTI). DTI is a tool for assessment of the organs with highly organised fibre structure. DWI forms an integral part of modern state-of-art magnetic resonance imaging and is indispensable in neuroimaging and oncology. DWI is a field that has been undergoing rapid technical evolution and its applications are increasing every day. This review article provides insights in to the evolution of DWI as a new imaging paradigm and provides a summary of current role of DWI in various disease processes.
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