diffusion weighted imaging


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Related to diffusion weighted imaging: Diffusion tensor imaging

diffusion weighted imaging

MRIs with intensity proportional to the diffusion constant of water; because of the impaired movement of water in myelin, the signal is strongest parallel to nerve tracts; used primarily to evaluate edema in acute stroke, but also shows demyelinating diseases, and has been used in mapping muscle fiber direction in the heart.
Synonym(s): diffusion imaging

diffusion weighted imaging

In magnetic resonance imaging, the use of changes in the movement of water through tissues as a contrast medium. Diffusion weighted imaging has been used in the diagnosis of strokes and other neurological diseases as well as abdominal and musculoskeletal injuries and diseases.
See also: imaging
References in periodicals archive ?
Diffusion weighted imaging, which shows a spotty hypointense lesion in the irradiation field, is suggestive of radiation necrosis.
Magneti cresonance imaging of benign spinal lesions stimulating metastasis: role of diffusion weighted imaging.
KEY WORDS: Hepatic abscesses, Hepatic metastasis, Magnetic Resonance Imaging, Diffusion Weighted Imaging.
Standard sequences were unenhanced FLAIR, T1-weighted, T2-weighted images in all patients followed by diffusion weighted imaging and contrast-enhanced T1-weighted imaging.
Additionally, one of the more advanced sequences available on the OPART is the option to perform Diffusion Weighted Imaging (DWI) and Perfusion Weighted Imaging (PWI).
Also 6 cases showed foci of acute infarction within these white matter hyperintensities on diffusion weighted imaging.
have suggested that diffusion weighted imaging (DWI) possesses the potential to be performed in distinguishing renal cell carcinomas (RCCs) from benign lesions in human small solid renal tumors, which demonstrates increasing accuracy for diagnosing RCCs while combined with nonenhanced MRI.
Recent studies have emphasized the role of dynamic MR imaging and diffusion weighted imaging in characterizing the benign and malignant process of the endometrium.
Methodology: The images of diffusion weighted imaging (DWI), DSC and ASL in 36 cases of TIA patients with unilateral MCA stenosis and 35 healthy volunteers were analyzed retrospectively to assess collateral flow in the circle of Willis, and to analyze the perfusion differences between ASL and DSC.
The advanced sequences available on the OPART include the ability to perform Diffusion Weighted Imaging (DWI) and Perfusion Weighted Imaging (PWI) for stroke detection and staging, which historically have only been available on high-field systems.
Two patients were excluded from the study, one patient had infarct beyond the area of CTP coverage area (Pontine infarction), one patient showed no evidence of infarction on NCCT, CTP or followup diffusion weighted imaging.

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