OBJECTIVES Although ischemic electrocardiographic (ECG) changes during dipyridamole or adenosine infusion have been reported as a marker for severe coronary artery disease (CAD), few studies have focused on ST-segment changes with adenosine triphosphate (ATP)-loading myocardial single-photon emission computed tomography (SPECT). METHODS AND SUBJECTS Between January 2003 and August 2008, 4650 ...

It has been quite some time since a new myocardial perfusion agent for radionuclide imaging was introduced into clinical practice. For more than 30 years, rest and stress myocardial perfusion imaging (MPI), employing first planar and then single photon emission computed tomography (SPECT) technology, have been performed with thallium201, Tc-99m sestamibi and Tc-99m tetrofosmin. MPI with these a...

xercise or pharmacological stress myocardial perfusion single-photon emission computed tomography (SPECT) has been used in daily clinical practice as a reliable diagnostic modality and a prognostic marker for patients with coronary artery disease.1–3 We herein report atypical exercise stress myocardial perfusion SPECT imaging in a patient with effort angina pectoris. A 58-year-old male who had ...

BACKGROUND Some myocardial perfusion single photon emission computed tomography (SPECT) and radionuclide ventriculography studies have suggested that the presence of regional perfusion defects and diastolic abnormalities could have prognostic implications in patients with hypertrophic cardiomyopathy (HC). The aim of this prospective study was to analyze the prognostic value of these techniques ...

BACKGROUND AND PURPOSE Optimization of coronary risk evaluation in stroke patients has been encouraged. The relationship between symptomatic intracranial atherosclerosis and occult coronary artery disease (CAD) has not been evaluated sufficiently. We aimed to investigate the prevalence of silent myocardial ischemia in patients with symptomatic intracranial atherosclerosis and to identify factor...

Myocardial perfusion single-photon emission computed tomography (MP-SPECT) has become essential for screening diabetic patients at high risk of silent myocardial ischemia. The combined use of pharmacological and exercise stress, together with the generalization of gated studies has increased both the sensitivity and the specificity of MP-SPECT, leading to a better identification of balanced cor...

OBJECTIVES This study sought to determine the feasibility of performing a comprehensive cardiac computed tomographic (CT) examination incorporating stress and rest myocardial perfusion imaging together with coronary computed tomography angiography (CTA). BACKGROUND Although cardiac CT can identify coronary stenosis, very little data exist on the ability to detect stress-induced myocardial per...

We present the case of a 65-year-old man with dyspnea and chest discomfort referred for dipyridamole myocardial perfusion scintigraphy. 99mTc-sestamibi cardiac gated SPECT images showed an irreversible hypoperfusion in the mid-ventricular portion of anteroseptal wall, a suspicious reversible hypoperfusion in the apical slices of inferolateral wall, and left ventricle dilatation with a ejection ...

Myocardial perfusion imaging (MPI) using nuclear cardiology techniques has been widely applied in clinical practice because of its well-documented value in the diagnosis and prognosis of coronary artery disease. Industry has developed innovative designs for dedicated cardiac SPECT cameras that constrain the entire detector area to imaging just the heart. New software that recovers image resolut...

Abstract is NOT available