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. 2025 Sep 8;16:1546919. doi: 10.3389/fendo.2025.1546919

Figure 1.

MRI and CT images of the brain depict various axial views and vascular structures. Panels A and E show T1-weighted images; B and F display T2-weighted images. Panel C and H are CT and MR angiography images highlighting cerebral blood vessels. Panel D is a CT scan, and G is a gradient echo image. Each image provides a different perspective on brain anatomy and vasculature.

Case 1. (A) The first MR T1 image demonstrated hyperintensity in the left putamen and the head of the caudate. (B) The first MR T2 image revealed hypointensity in the left putamen and the head of the caudate. (C) Brain MRA indicated mild-moderate stenosis of left MCA. (D) Brain CT showed no significant abnormalities in basal ganglia. (E) A follow-up brain MR T1 image after one month showed high signals were more pronounced in the left putamen and the head of the caudate. (F) The second brain MR T2 image revealed that the lesion on the left side changed from a low signal to a high signal and isointense. (G) SWI sequence shows asymmetric low signals in the bilateral basal ganglia (putamen and the head of the caudate), with the left side being more pronounced. (H) CTA indicated mild-moderate stenosis of left MCA and multiple intracranial vascular stenosis.