UNLABELLED Cerebral amyloid angiopathy (CAA) is known to be an important cause of spontaneous cortical-subcortical intracranial hemorrhage in normotensive older persons. CAA can also manifest as leukoencephalopathy, brain atrophy, and ischemia secondary to hypoperfusion. Our goal was to verify cerebral hypoperfusion in patients with CAA using (99m)Tc-ethylcysteinate dimer ((99m)Tc-ECD) brain pe...

OBJECTIVE To investigate event-related potential in executive function of attention and characteristics of cerebral perfusion by 99mTc-ECD single-photon emission computed tomography (SPECT) in depression patients receiving the Oddball task. METHODS A total of 30 depression patients and 30 normal control subjects were selected to carry out the Oddball task. Event-related potential (ERP) techno...

UNLABELLED Probabilistic atlases are more representative of the population than single brain atlases. They allow anatomic and functional labeling of the results of group studies in stereotactic space and, hence, the automated anatomic labeling of individual brain imaging data. METHODS In the current study, probabilistic maps of the blood flow distribution of the middle cerebral artery (MCA) w...

Abstract Purpose of Review The purpose this review is to provide a summary on the status art simultaneous perfusion-innervation imaging by CZT-SPECT and clarify its potential applications in clinical practice. Recent Findings Introduction CZT cameras represented critical breakthrough nuclear cardiology. Although it has been demonstrated that cardiac innervation may be easily assessed CZT-SPECT,...

transient ischemic left ventricular dilation (tid) is a marker of severe and extensive coronary artery disease as well as an increased risk of adverse outcomes. the patients with more severe and extensive ischemia, multivessel-type of perfusion abnormality as well as patients with left anterior descending artery (lad) territory perfusion abnormality have more probability of having tid. evaluati...

Introduction:Amphetamines are central nervous system (CNS) stimulant substances and amphetamine abuse is considered a growing problem in our country. Previous studies revealed destructive effects of amphetamines on metabolism, perfusion and structure of brain. The aim of current study was evaluating regional cerebral blood flow (rCBF) disturbances in methamphetamine (MA) abuser...

introduction: the purpose of this study is to assess the integrated role of scintigraphy by tc99m mibi in diagnosis of parathyroid adenoma and its impacts on the myocardium, and to evaluate whether myocardium perfusion gated spect study could be a complementary routine workup for patient with positive parathyroid adenoma on tc99m mibi parathyroid scan. methods: rest myocardium perfusion gated s...

Cerebral perfusion in a previously untreated patient with obsessive-compulsive disorder was studied qualitatively and semi-quantitatively with SPECT before, and during and 6 wk after treatment with clomipramine. The patient's symptoms disappeared while on medication and relapsed after drug withdrawal. At baseline, there was an increased perfusion ratio in the bilateral orbitofrontal, anterior c...

OBJECTIVE The pathogenesis of neurologic and neuropsychologic dysfunction in HIV-1 infection is unclear. The purpose of the study was to determine an association between cerebral perfusion and HIV-1-related ocular microangiopathic syndrome. METHODS We studied 28 HIV-1-infected patients, seven of whom presented with asymptomatic HIV infection, nine with lymphadenopathy syndrome or AIDS-related...

different software tools for quantification of myocardial perfusion spect (mps) studies are routinely used. several perfusion parameters can be computed automatically.  interpretation of the mps should start with visual inspection of the rotating planar images, visual analysis of reconstructed spect slices and then quantitative analysis to confirm the visual impression. quantification should be...