SPECT Imaging of Epilepsy: An Overview and Comparison with F-18 FDG PET
Figure 3
Tc-99m HMPAO ictal brain SPECT scan section (middle) showing a focal area of hyperperfusion in the right premotor area. The right to left asymmetry in blood flow for this region was 1.32, and the intensity of uptake in the right frontal lobe measured 1.13 (cortical to cerebellar ratio) with a range of normals = mean ± 1SD of . The ictal brain SPECT scan was subsequently coregistered with the MRI scan (left). The resulting fusion image (right) shows the anatomic location of the epileptogenic focus, which was surgically excised, and the patient was rendered seizure-free.
