Cerebral blood flow in alcohol withdrawal: relation to severity of dependence and cognitive impairment.

Background: Alcohol dependence affects cerebral function in complex, still unsettled ways.

Methods: Thirty exclusively alcohol-dependent patients in various stages of withdrawal and 25 matched controls were examined for regional uptake of 99mTc-HMPAO in nine homologous regions of the cerebral cortex by single photon emission tomography (SPET). Image analysis reports regional uptake/uptake in homologous hemisphere.

Single photon emission tomography with 99m Tc-HMPAO in Arab patients with depression.

Background: This study investigates the rate of cerebral blood flow (rCBF) in Arab patients wth depression.

Methods: Forty-four patients with DSM-III-R major depressive disorders were studied at rest using single photon emission computerized tomography (SPECT) with 99m Tc-HMPAO in comparison with 20 normal controls. All patients were assessed using the Hamilton Rating Scale for Depression (HRSD).

Cortical hypoperfusion in symptomatic West syndrome. A SPECT study.

Diffuse and focal changes in glucose utilization and abnormal cerebral cortical perfusion were found in West syndrome by PET and SPECT investigations. In this study 99mTc-HMPAO SPECT was performed on seven patients with symptomatic West syndrome several months after the onset of the spasms. Regions of interest of the cerebral cortex and cerebellum were delineated by an automated computer program and cortical/cerebellar ratios of the HMPAO uptake in the patients were compared to those of controls.

Agyria-pachygyria: cerebral perfusion studies by 99mTc-HMPAO SPECT [corrected].

Cerebral perfusion was investigated in three patients with agyria-pachygyria by using 99mTc-HMPAO SPECT in order to study the distribution of blood flow. Diffuse cortical hypoperfusion was found in all three infants. The visual cortex was not identifiable in two of the cases.

Regional cerebral blood perfusion in children with hemiplegia: A SPECT study.

Fourteen children with spastic hemiplegia of various etiology: cerebral palsy (seven cases, five with porencephalic cyst); stroke with small deep infarcts (two); hemiconvulsion-hemiplegia-epilepsy syndrome (three); traumatic brain injury (two), were investigated by 99mTc-HMPAO SPECT. Localized and remote perfusion abnormalities were studied. Hypoperfusion corresponding to CT abnormalities was found in each group, but the perfusion deficit extended beyond the boundaries of anatomical defects, most prominently in cases with widespread unilateral epileptic discharges.

Comparison of planar and SPECT 99Tcm-dimercaptosuccinic acid scintigraphy in calculating differential kidney function.

An extensive study to compare planar and single photon emission computed tomographic (SPECT) 99Tcm-dimercaptosuccinic acid (DMSA) determination of differential kidney function (DKF) has been carried out. The study has demonstrated that it is possible to use SPECT differential kidney function in place of that obtained using planar scintigraphy. The SPECT DKF value correlated with the planar DKF value.

Kidney volume estimation using 99Tcm-DMSA RSPECT: evaluation by phantom study.

Renal parenchymal volume is important for clinical interpretation. The phantom study was carried out to validate the volume calculation. The volume of kidney phantom was determined using reoriented single photon emission computed tomography (RSPECT).