TY - JOUR AU - Khanna, V. K. AB - Letters to the Editor 1607 neurological signs could be detected. A repeat cranial MRI examination with and without Gd-DPTA was normal. A digital subtraction angiography was performed and showed resolution of the previous angiographic abnormalities. Magnetic resonance imaging is more sensitive than CT for 3 5 detection of strokes, particularly in the vertebrobasilar system. " Only a few reports of MRI imaging of vertebrobasilar artery 1 4 2 3 occlusions have been made. - In two of them, - nonenhanced MRI was performed in the acute stage, within 24 hours of the ictal event, and showed absence of a flow void in the affected vessel on axial T2-weighted images and areas of iso- or mild hyperintensity ยป / signal relative to brain parenchyma on Tl-weighted or proton density images. None of them used a contrast-enhanced MRI scan. In our patient, gadolinium demonstrated contrast enhancement of the abnormal signal over the left VA, suggesting slow flow within this artery, and thus aided the diagnosis of dissection. Although changes in signal intensity within the vessel may be attributed to thrombus formation, altered (i.e., slow) flow dynam- ics is the more likely possibility in this case because of the hyperintense signal on TI - Platelet Aggregation in Patients With Parkinson's Disease JF - Stroke DA - 1991-12-01 UR - https://www.deepdyve.com/lp/wolters-kluwer-health/platelet-aggregation-in-patients-with-parkinson-apos-s-disease-GrKn0zVber VL - 22 IS - 12 DP - DeepDyve ER -