title: Tc-99m HMPAO brain perfusion SPECT in drug-free obsessive-compulsive patients without depression.
abstract: The aim of this study was to confirm prior results of brain-imaging studies on obsessive-compulsive disorder (OCD) in a sample of Turkish patients, as a cross-cultural study. Tc-99m HMPAO brain perfusion SPECT imaging was performed in nine drug-free OCD patients without depression and six controls. The patients' Hamilton Depression Rating Scale scores were <16. The severity of obsessive-compulsive symptoms was rated with the Yale-Brown Obsessive-Compulsive Rating Scale (YBOCS). Quantitative evaluation of regional cerebral blood flow revealed that right thalamus, left frontotemporal cortex and bilateral orbitofrontal cortex showed significant hyperperfusion in patients with OCD compared with controls. YBOCS scores did not show any correlation with hyperperfusion in regional cerebral blood flow in these areas. Results of this cross-cultural study may support orbitofrontal and thalamic dysfunction in OCD in a sample of Turkish patients.
authors.affiliation: Department of Psychiatry, School of Medicine, University of Dokuz Eylül, 35340, Balçova-Izmir, Turkey. koksal.alptekin@deu.edu.tr
authors.forename: K
authors.initials: K
authors.lastname: Alptekin
authors.forename: B
authors.initials: B
authors.lastname: Degirmenci
authors.forename: B
authors.initials: B
authors.lastname: Kivircik
authors.forename: H
authors.initials: H
authors.lastname: Durak
authors.forename: B
authors.initials: B
authors.lastname: Yemez
authors.forename: E
authors.initials: E
authors.lastname: Derebek
authors.forename: Z
authors.initials: Z
authors.lastname: Tunca
mesh_terms: D000328:Adult; D001921:Brain / Q000098:blood supply* / Q000000981:diagnostic imaging; D016022:Case-Control Studies; D002560:Cerebrovascular Circulation; D003863:Depression / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D009771:Obsessive-Compulsive Disorder / Q000000981:diagnostic imaging / Q000473:pathology* / Q000503:physiopathology; D017397:Prefrontal Cortex / Q000098:blood supply; D019275:Radiopharmaceuticals; D012720:Severity of Illness Index; D019690:Technetium Tc 99m Exametazime; D013788:Thalamus / Q000098:blood supply; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods
chemical_list: D019275:Radiopharmaceuticals; D019690:Technetium Tc 99m Exametazime