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- W3126831986 abstract "Purpose The purpose of this study was to evaluate contrast enhancement patterns on three-dimensional (3D) black blood (BB) contrast-enhanced magnetic resonance (MR) imaging in patients with occlusion or stenosis of the anterior intracranial artery. Materials and methods From January 2018 to January 2020 we retrospectively reviewed stroke 3D BB contrast-enhanced MR imaging and MR angiography findings of patients visiting the emergency room for evaluation of non-traumatic brain lesions. In total, 92 patients with positive findings on 3D BB contrast-enhanced MR imaging were enrolled in this study. We divided the enrolled group according to whether MR angiography findings suggested complete occlusion, high-grade stenosis (51–99 %), or low-grade stenosis (10–50 %). Results Of 92 patients, 33 had complete occlusion in the anterior intracranial artery, 36 had high-grade stenosis, and 23 had low-grade stenosis. The complete occlusion group showed concentric and segmental enhancement on 3D BB enhanced MR imaging. The high-grade stenosis group frequently showed concentric and focal enhancement. The high signal vessel sign in the complete occlusion group was significantly higher compared to the stenosis group (p < 0.001). The contrast ratio between the lesion and pituitary gland in the occlusion group was significantly lower than that of the stenosis group (p < 0.05). Conclusion Bright contrast enhancement and high signal vessel sign on 3D BB contrast enhanced MR imaging are related to contrast stagnation of the occlusion site and slow flow of a distal portion of the occlusion site." @default.
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- W3126831986 date "2021-04-01" @default.
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- W3126831986 title "Strong enhancement on three-dimensional black-blood enhanced magnetic resonance imaging: Comparison intracranial stenosis and complete occlusion" @default.
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- W3126831986 doi "https://doi.org/10.1016/j.ejrad.2021.109580" @default.
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