Core tip diffusion weighted imaging has revolutionised the magnetic resonance imaging there is wide use of this technique in neuroimaging body imaging as well as in oncoimaging this article reviews the current role of diffusion weighted imaging in medical imaging and highlights the current challenges and limitations to this technique. Diffusion weighted magnetic resonance mr imaging provides image contrast that is different from that provided by conventional mr techniques it is particularly sensitive for detection of acute ischemic stroke and differentiation of acute stroke from other processes that manifest with sudden neurologic deficits diffusion weighted mr imaging also provides adjunctive information for other . Mr imaging o review diffusion weighted mri in the body applications and challenges in oncology ment of whole body dwi or two decades diffusion weighted imaging dwi has been applied to dwi applications and challenges in oncology ajr188 june 2007 1623 in biologic tissue the dwi signal is derived . Two main challenges in the application of dw imaging to body imaging are the decreased signal to noise ratio of body tissues compared with neuronal tissues due to their shorter t2 relaxation time and image degradation related to physiologic motion eg respiratory motion diffusion weighted mr imaging of the liver radiology 20102541
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