Journal of neuroimaging : official journal of the American Society of Neuroimaging
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Diffusion anisotropy color-coded maps of cerebral white matter can be generated from orthogonal anisotropic diffusion-weighted imaging (DWI) using the three-dimensional anisotropy contrast (3DAC) technique, but its precision has not been fully validated. Hence, we attempted to determine whether 3DAC is comparable to a diffusion tensor imaging (DTI) color map. ⋯ The 3DAC could visualize directional information of white matter tracts as precisely DTI-based color maps did, particularly when FA was large and/or e1 directions were orthogonal.
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The integrity of the fornix using diffusion tensor imaging (DTI) in adolescent participants with acute mild traumatic brain injury (mTBI) compared to a demographically matched control group was examined. Fractional anisotropy (FA) in the fornix was elevated in the mild traumatic brain injured group. ⋯ A relation was found between lower performance on cognitive tasks and higher FA. The potential role of fornix injury as a basis of memory and processing speed deficits in mTBI is discussed.
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To assess the safety and efficacy of vertebral artery origin angioplasty and stenting for stroke prevention in a multicenter clinical experience. ⋯ Endovascular intervention of VAOS is associated with low peri-procedural complication rates. Restenosis remains a concern; age and smoking predicted future restenosis.
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To describe a case of successful intracranial angioplasty and stenting of a symptomatic middle cerebral artery (MCA) stenosis using a transcervical approach. ⋯ Access of the intracranial circulation through direct CCA puncture may be a feasible alternative when the transfemoral access is not possible. The transcervical approach may be safe even with the use of antiplatelet medications and anticoagulation.
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We investigated how many contrast-transcranial Doppler (c-TCD) examinations should be performed on different days in patients with acute stroke. ⋯ c-TCD examinations should be performed on at least two different days to assess the prevalence of RLS.