WebMay 23, 2024 · Diffusion-weighted imaging (DWI) is useful for detecting acute cerebral ischemic lesions and diagnosing transient ischemic attack (TIA); however, DWI may not …
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WebMay 15, 2024 · The investigators conclude that, “DWI positivity conveys useful, long-term prognostic information in patients with TIA and minor stroke, supporting the tissue-based definition of TIA, which could... WebConclusion In this study, peri-procedural DWI-positive lesions occurred in approximately one-third of all cases. These were threefold more common in the setting of ruptured aneurysms. Adjunctive devices did not increase the rate of ischemic events. bitmdsytw 126.com
Optimal Timing of Diffusion-Weighted Imaging to Avoid …
WebJun 29, 2024 · Three patients had typical unilateral DWI-positive lesions. No significant differences in any of the three parameters were detected between DWI-positive and DWI-negative hippocampi. A statistically significant correlation was detected between the ODI and CBF ( R = .51, P = .021). CONCLUSIONS Diffusion-weighted imaging (DWI) is a form of MR imaging based upon measuring the random Brownian motion of water molecules within a voxel of tissue. In general simplified terms, highly cellular tissues or those with cellular swelling exhibit lower diffusion coefficients. See more A great deal of confusion exists in the way the clinicians and radiologists refer to diffusion restriction, with both groups often appearing to not actually understand what they are referring to. … See more As opposed to essentially free diffusion of water kept inside a container, diffusion of water inside brain tissue, for example, is hindered primarily by … See more A variety of techniques for generating diffusion maps have been developed. By far the most commonly used technique relies on a spin-echo echo-planar sequence (SE-EPI) … See more Diffusion-weighted imaging has a major role in the following clinical situations 3-5: 1. early identification of ischemic stroke 2. differentiation of … See more WebJul 12, 2024 · Diffusion-weighted imaging (DWI) is a robust magnetic resonance imaging (MRI) technique used for rapid diagnosis of acute ischemic stroke [].However, the sensitivity of DWI for stroke in the posterior circulation is limited, especially in the brainstem [2, 3].The detectability tends to be low in the acute phase of brainstem infarctions and increases in … bitmead family