A 43-year-old man with type 2 diabetes mellitus was referred for cardiovascular risk assessment 2 years ago. Other risk factors for coronary artery disease included hypercholesterolemia, smoking, and a family history of coronary artery disease. The patient was asymptomatic. Physical examination was unremarkable; his body mass index was 22 kg/m and his blood pressure was 125/80 mm Hg. Hyperchole...

Introduction: In patients with coronary artery disease (CAD) noninvasive evaluation for detection of ischemia is important to avoid invasive interventions like angiography. Exercise stress test is conventionally the first study used in evaluation of CAD. Considering the noninvasive nature of the myocardial perfusion scan, we decided to compare its accuracy with stress test. Methods: Patie...

The study named " The role of myocardial perfusion gated SPECT study in women with coronary artery disease " reveals some current and important issues in diagnosing myocardial ischemia in women (1). Because the obesity is the highest and the death from coronary artery disease (CAD) is the second highest in Turkish women among all European countries, diagnosing CAD in women becomes much more imp...

We describe an image processing system for the automatic assessment of ejection fraction (EF) from noisy SPECT left ventricular myocardial perfusion images. A segmentation scheme consisting of an elliptical coordinate transformation, matched filtering and dynamic contour tracking detects the endoand epicardial boundaries. Computation of EF is performed based on the epirather than the endo-cardi...

BACKGROUND Asymptomatic patients with severe coronary atherosclerosis may have a normal resting electrocardiogram and stress test. AIM To assess the yield of Gated Single Photon Emission Computer Tomography (SPECT) for the screening of silent myocardial ischemia in type 2 diabetic patients. MATERIAL AND METHODS Electrocardiogram, stress test and gated-SPECT were performed on 102 type 2 diab...

BACKGROUND A novel technology has been developed for ultrafast (UF) single-photon emission CT (SPECT) myocardial perfusion imaging by using a pinhole collimation design and multiple cadmium zinc telluride crystal arrays. The purpose of this study was to compare myocardial perfusion imaging obtained by UF-SPECT with standard (S) SPECT in patients with known or suspected coronary artery disease. ...

Simulation is a useful tool in cardiac SPECT to assess quantification algorithms. However, simple equation-based models are limited in their ability to simulate realistic heart motion and perfusion. We present a numerical dynamic model of the left ventricle, which allows us to simulate normal and anomalous cardiac cycles, as well as perfusion defects. Bicubic splines were fitted to a number of ...

The development of quantitative gated single-photon emission computed tomography (SPECT) has enabled the assessment of left ventricular perfusion, function and wall thickness in a single examination. Accordingly, the present study used gated SPECT to assess the benefit of coronary artery bypass grafting (CABG) in patients with coronary artery disease; 47 of those patients were evaluated before ...