PMC6676254_01
Non-contrast head computerized tomography 6 h after the coronary angiogram showing intravascular contrast with cortical staining and effacement of the sulci in the right frontal lobe.
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Cranial CT scan revealed that there is a faded image of right frontal lobe sulci and there are hyperdense fields at the vertex and at the right frontal lobe (Figure 1A and B).
Non-contrast head computerized tomography image taken after 48 h indicating sulcal effacement in the right cerebral hemisphere due to cerebral swelling and no contrast enhancement in the right frontal lobe.
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Non-contrast head CT scanning performed 48 h after the onset of symptoms showed sulcal effacement in the right cerebral hemisphere due to cerebral swelling (Figure 2).
Normal cranial diffusion MRI performed a mean 90 h after the onset of symptoms. MRI images revealing that the contrast agent was reabsorbed from the subarachnoid space and showing no hemorrhage or ischemia: (A) flair, (B) SWI (susceptibility weighted imaging), and (C) diffusion sequence.
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A magnetic resonance imaging (MRI) and MR angiography at 90 ho from patient's symptoms showed no sign of bleeding no edema and no swelling or cortical enhancement on the T1-weighted images (T1WIs) or on the fluid-attenuated inversion recovery (FLAIR) images (Figure 3A to C).