Department of Clinical Science (E.J., L.Z., J.M.), Neurosciences, Umeå University, Umeå, Sweden
Wallenberg Center for Molecular Medicine (E.J.), Umeå University, Umeå, Sweden.
AJNR Am J Neuroradiol. 2021 May;42(5):927-929. doi: 10.3174/ajnr.A7076. Epub 2021 Mar 11.
Carotid near-occlusion is a frequently overlooked diagnosis when CTA examinations are assessed in routine practice. To evaluate the potential value of phase-contrast MR imaging in identifying near-occlusion, we examined 9 carotid near-occlusions and 20 cases of conventional ≥50% carotid stenosis (mean stenosis degree, 65%) with phase-contrast MR imaging. Mean ICA flow was lower in near-occlusions (52 mL/min) than in conventional ≥50% stenosis (198 mL/min, < .001). ICA flow of ≤110 mL/min was 100% sensitive and specific for near-occlusion. Phase-contrast MR imaging is a promising tool for diagnosing carotid near-occlusion.
在常规实践中评估 CTA 检查时，颈动脉近闭塞是一个经常被忽视的诊断。为了评估相位对比 MR 成像在识别近闭塞中的潜在价值，我们用相位对比 MR 成像检查了 9 例颈动脉近闭塞和 20 例常规≥50%颈动脉狭窄（平均狭窄程度为 65%）的患者。近闭塞（52 毫升/分钟）的 ICA 流量低于常规≥50%狭窄（198 毫升/分钟，<.001）。ICA 流量≤110 毫升/分钟对近闭塞的诊断具有 100%的敏感性和特异性。相位对比 MR 成像技术是诊断颈动脉近闭塞的一种很有前途的工具。
