PMC9629540_01
Magnetic resonance (MR) images of Case 1 (19-year-old female with isolated splenium infarct after COVID-19 infection). There is a slightly hypodense area in the location of splenium in T1-weighted images ((a) and (b)) and hyperintensity in the same location on axial T2-weighted images. There was no contrast medium enhancement in splenium on T1-weighted axial ((e) and (f)) and sagittal (g) series. T2-weighted sagittal image indicated the lesion in splenium with high signal intensity as well as axial FLAIR images ((i) and (j)). MR angiography shows the discontinuity of the right posterior cerebral artery on consecutive axial images ((k) and (l)). Diffusion-weighted images depict the diffusion restriction of splenium ((m) and (n)) with apparent diffusion coefficient maps ((o) and (p)).
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MR angiographic images showed that there was a discontinuity in the terminal branches of the right posterior cerebral artery (Figure 2).
PMC9629540_02
Magnetic resonance (MR) images of Case 2 (22-year-old female with isolated splenium infarct after COVID-19 infection). Sagittal T1-weighted image (a) shows no pathological signal in splenium; however, sagittal T2-weighted images indicate the focal hyperintensity of the splenium (b).
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T1-weighted series. There was a marked diffusion restriction on diffusion-weighted MRI (Figure 3). The patient has been put on acetylsalicylic acid therapy; however, the follow-up process is unknown since the patient was never admitted to the hospital again for the follow-up examinations.