1. Hemodynamics derived from computational fluid dynamics based on magnetic resonance angiography is associated with functional outcomes in atherosclerotic middle cerebral artery stenosis
- Author
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Yingsong Huo, Jiahua Wu, Jin Peng, Cunnan Mao, Guozhong Chen, Danfeng Zhang, Leilei Zhou, Peng Wang, Qian Chen, Wen Su, and Xindao Yin
- Subjects
medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Internal medicine ,Middle cerebral artery stenosis ,medicine ,Cardiology ,Hemodynamics ,Original Article ,Radiology, Nuclear Medicine and imaging ,business ,Magnetic resonance angiography - Abstract
BACKGROUND: To investigate the relationship between fluid-attenuated inversion recovery (FLAIR) vascular hyperintensity (FVH), hemodynamics, and functional outcome in atherosclerotic middle cerebral artery (MCA) stenosis using a computational fluid dynamics (CFD) model based on magnetic resonance angiography (MRA), according to a modified Rankin Scale (mRS) at 3 months. METHODS: A total of 120 patients with 50–99% atherosclerotic MCA stenosis were included. The training and internal validation groups were composed of 99 participants and 21 participants, respectively. Demographic, imaging data, and functional outcome (mRS at 3 months) were collected. Hemodynamic parameters were obtained from the CFD model. The FVH score was based on the number of territories where FVH is positive, according to the spatial distribution in the Alberta Stroke Program Early Computed Tomography Score (ASPECTS). The prediction models were constructed according to clinical and hemodynamic parameters using multivariate logistic analysis. The DeLong test compared areas under the curves (AUCs) of the models. RESULTS: The multivariable logistic regression analysis showed that the National Institute of Health Stroke Scale (NIHSS) at admission, hypertension, hyperlipidemia, the ratio of wall shear stress before treatment (WSSR(before)), and difference in the ratio of wall shear stress (WSSR) were independently associated with functional outcome (all P
- Published
- 2022