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  • Title: Interictal crossed cerebellar hyperperfusion on Tc-99m ECD SPECT.
    Author: Sagiuchi T, Ishii K, Asano Y, Aoki Y, Kikuchi K, Jinguuji K, Yanaihara H, Woodhams R, Hayakawa K.
    Journal: Ann Nucl Med; 2001 Aug; 15(4):369-72. PubMed ID: 11577763.
    Abstract:
    Crossed cerebellar hyperperfusion (CCH) in epilepsy is a rare condition that is observed on ictal cerebral perfusion SPECT. The mechanism of CCH assumes that hyperperfusion in the epileptic foci of the unilateral supratentorium causes hyperperfusion secondary to the corticopontocerebellar pathway (CPCP)-mediated remote effect in the contralateral cerebellar hemisphere. This phenomenon is similar to that of crossed cerebellar diaschisis (CCD). In this report we demonstrated interictal CCH in a patient with epilepsy in technetium-99m-ethyl cysteinate dimer (Tc-99m ECD) SPECT of the brain. To the best of our knowledge, interictal CCH has not been reported in the literature. This is the first report to describe the phenomenon with interictal Tc-99m ECD SPECT.
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