Diffusion weighted imaging: Technique and applications

• 作者: Arun Kumar Gupta Chandan J Das Raju Sharma Vinit Baliyan
• 来源期刊: 世界放射学杂志：英文版（电子版）
• 学科: 医学
• 关键词: DIFFUSION WEIGHTED IMAGING DIFFUSION TENSOR IMAGING Onco-imaging Neuro-imaging
• 年，卷（期）: 2016,（9）
• 页码范围: 785-798
• 页数: 14页
• 分类号: R445.2

摘要

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.