Fig. 1
Imaging data. Case 1 (a–c). High-intensity signal in bilateral medial temporal lobes as shown by magnetic resonance imaging, axial fluid-attenuated inversion recovery image (a). Increased blood flow in bilateral medial temporal lobes (b), with decreases in the right orbitofrontal cortex (c), as assessed by 123I-IMP brain perfusion single-photon emission computed tomography with three-dimensional stereotactic surface projection analysis. Case 2 (d–f). No specific findings on the magnetic resonance imaging, axial fluid-attenuated inversion recovery image (d). Increased blood flow in bilateral medial temporal lobes and the posterior orbitofrontal cortex (e), with no decreases (f), as shown by 123I-IMP brain perfusion single-photon emission computed tomography with three-dimensional stereotactic surface projection analysis