PMC8769473_01
(A) Postoperative diffusion-weighted MRI showed areas of high-intensity signal in the left temporal and parietal lobes, and areas of slightly high-intensity signal in the left frontal cortex and basal ganglia compared to the contralateral side. (B) 123I-N-isopropyl-p-iodoamphetamine SPECT obtained 3 days after reperfusion therapy showed increased CBF in the left frontal lobe (arrows). Early (C) and late (D) 123I-iomazenil SPECT obtained 1 month after reperfusion therapy showed a reduction of tracer uptake in the previously demonstrated areas of hyperperfusion (arrows) and cerebral infarction. CBF: cerebral blood flow, MRI: magnetic resonance imaging, SPECT: single-photon emission computed tomography.
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F1
Postoperative diffusion-weighted magnetic resonance imaging (MRI) showed areas of high-intensity signal in the left temporal and parietal lobes, and areas of slightly high-intensity signal in the left frontal cortex and basal ganglia compared to the contralateral side (Fig. 1A). Three days after reperfusion therapy, brain perfusion SPECT using N-isopropyl-p- [123I]-iodoamphetamine showed increased cerebral blood flow (CBF) in the left frontal lobe (Fig. 1B), suggesting post-reperfusion CH. Tracer uptake had decreased in the previously demonstrated areas of hyperperfusion (Figs. 1C and 1D); the corresponding area on follow-up MRI was structurally intact.