BACKGROUND Myocardial perfusion imaging (MPI) has been used in the assessment of chagasic heart disease. OBJECTIVE To investigate the value of gated-single photon emission computed tomography (gated-SPECT) MPI to detect early cardiac involvement in chagasic patients in the indeterminate phase, who present segmental motion abnormalities detected by tissue Doppler imaging (TDI)-derived strain. ...

Soft-tissue attenuation artifacts generally appear as fixed perfusion-scan defects. Gated 99mTc-tetrofosmin SPECT may help differentiate myocardial infarction (MI) from artifacts, as fixed defects with decreased function (wall motion and thickening) probably represent MI, whereas attenuation artifacts represent preserved function. Methods: Ungated stress and gated rest 99mTc-tetrofosmin SPECT w...

Methods CE-MARC was a prospective study of 752 patients with suspected angina. All patients were scheduled for CMR, SPECT and X-ray coronary angiography. Multi-parametric CMR comprised adenosine stress/rest perfusion, cine imaging, late gadolinium enhancement and MR coronary angiography. Gated adenosine stress/rest SPECT was performed using 99mTc-tetrofosmin. The primary outcome was the diagnos...

The aim of the study was to evaluate the performance of multislice computed tomography (MSCT) for the detection and semiquantitative analysis of healed myocardial infarct in comparison to single-photon emission computed tomography (SPECT). Recently, MSCT was shown to allow detection of myocardial infarct by the presence of hypoenhanced areas. However, direct comparisons to other imaging modalit...

Introduction: Gated SPECT myocardial perfusion scanning has new capabilities in addition to its main applications such as left ventricular dyssynchrony using phase analysis. Phase analysis has been investigated through various software including Emory Cardiac Toolbox (ECTb) and Quantitative Gated SPECT (QGS). The aim of this study is to evaluate the effect of reconstruction par...

OBJECTIVES To assess the effectiveness and cost-effectiveness of single photon emission computed tomography (SPECT) myocardial perfusion scintigraphy for the diagnosis and management of angina and myocardial infarction (MI). DATA SOURCES Major electronic databases. REVIEW METHODS Two reviewers independently extracted data and assessed study quality. A decision tree model was used to model t...

UNLABELLED The present study evaluates left ventricular performance during exercise by ECG-gated myocardial perfusion SPECT with short-time data collection. METHODS The study population consisted of 10 healthy volunteers (Group N) and 9 patients with ischemic heart disease (Group I). Seven patients in Group I had a history of prior myocardial infarction. Rest ECG-gated SPECT was performed 40 ...

There are some specifics in the presentation of coronary artery disease (CAD) in women compared with men that may cause diagnostic pitfalls. The accuracy of noninvasive diagnostic testing in women tends to be lower than that in men. Stress myocardial perfusion imaging with 99m-Tc sestamibi gated SPECT is an accurate technique for detecting CAD. Only a few studies have compared dipyridamole stre...