CTA and DSA based computational fluid dynamics models for morphological and hemodynamic assessment of intracranial atherosclerotic stenosis.

Although the minimum lumen diameter tended to be larger in ICA and VA lesions, the differences did not reach statistical significance in either modality (DSA: MCA 0.93 ± 0.48 mm, ICA 1.35 ± 0.59 mm, VA 1.33 ± 0.62 mm; p = 0.105; CTA: MCA 0.94 ± 0.51 mm, ICA 1.39 ± 0.60 mm, VA 1.46 ± 0.57 mm; p = 0.071).

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