title: Diffusion weighted imaging: Technique and applications.
abstract: 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 response 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.
authors.affiliation: Vinit Baliyan, Chandan J Das, Raju Sharma, Arun Kumar Gupta, Department of Radiology, All India Institute of Medical Sciences, New Delhi 110029, India.
authors.forename: Vinit
authors.initials: V
authors.lastname: Baliyan
authors.affiliation: Vinit Baliyan, Chandan J Das, Raju Sharma, Arun Kumar Gupta, Department of Radiology, All India Institute of Medical Sciences, New Delhi 110029, India.
authors.forename: Chandan J
authors.initials: CJ
authors.lastname: Das
authors.affiliation: Vinit Baliyan, Chandan J Das, Raju Sharma, Arun Kumar Gupta, Department of Radiology, All India Institute of Medical Sciences, New Delhi 110029, India.
authors.forename: Raju
authors.initials: R
authors.lastname: Sharma
authors.affiliation: Vinit Baliyan, Chandan J Das, Raju Sharma, Arun Kumar Gupta, Department of Radiology, All India Institute of Medical Sciences, New Delhi 110029, India.
authors.forename: Arun Kumar
authors.initials: AK
authors.lastname: Gupta
keywords: Diffusion tensor imaging; Diffusion weighted imaging; Neuro-imaging; Onco-imaging