Figure 2
From: Usefulness of multimodal MR imaging in the differential diagnosis of HaNDL and acute ischemic stroke
Multimodal brain MRi; axial images: (A) Diffusion-weighted scans demonstrating no abnormalities; (B) MR angiogram (3DPC) of the circle of Willis showing narrowing of the left ICA and branches of the MCA and PCA; (C1). Prolonged mean transit time (red color denotes prolongation) in the left hemisphere with respect to the right one, with (C2) mild reduction in cerebral blood flow, and (C3) mild increase of cerebral blood volume. Three months later (D) MR angiogram was normal. The maps of CVB and CBF were also normal and (E) the map of mean transit time had almost normalized.