Chronological Changes in Brain Blood Flow and Central Benzodiazepine Receptor Binding Potential in a Patient with Symptomatic Epilepsy after Surgery for Aneurysmal Subarachnoid Hemorrhage: 123I-Iomazenil Single-Photon Emission Computed Tomography Studies | Zendy

Toshiyuki Murakami | Zendy; Hiroshi Kashimura | Zendy; Hidehiko Endo | Zendy; Hiroki Kuroda | Zendy; Kuniaki Ogasawara | Zendy

Open Access

Chronological Changes in Brain Blood Flow and Central Benzodiazepine Receptor Binding Potential in a Patient with Symptomatic Epilepsy after Surgery for Aneurysmal Subarachnoid Hemorrhage: 123I-Iomazenil Single-Photon Emission Computed Tomography Studies

Author(s) -

Toshiyuki Murakami,

Hiroshi Kashimura,

Hidehiko Endo,

Hiroki Kuroda,

Kuniaki Ogasawara

Publication year - 2017

Publication title -

case reports in neurology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.207

H-Index - 15

ISSN - 1662-680X

DOI - 10.1159/000480228

Subject(s) - cerebral blood flow , single photon emission computed tomography , medicine , subarachnoid hemorrhage , emission computed tomography , epilepsy , spect imaging , cerebellar hemisphere , positron emission tomography , nuclear medicine , perfusion , anesthesia , cerebellum , psychiatry

Early 123I-iomazenil single-photon emission computed tomography (SPECT) images are correlated with blood flow in the brain, and late images are correlated with cortical benzodiazepine receptor binding potential. Reduced metabolism in the contralateral cerebral hemisphere is indicated by crossed cerebellar hypoperfusion (CCH). We present the case of a 63-year-old man who developed symptomatic epilepsy 13 days after surgery for an aneurysmal subarachnoid hemorrhage. Early images on 123I-iomazenil SPECT 2 days after seizure onset revealed CCH and hyperperfusion in the affected cerebral hemisphere where benzodiazepine receptor binding potential was reduced in late images on 123I-iomazenil SPECT. These abnormal findings resolved on repeated 123I-iomazenil SPECT 1 month after seizure onset. The case we present here is consistent with the idea that the central benzodiazepine receptor system in the human brain undergoes changes that are related to seizures due to epilepsy

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