False-positive findings with myocardial perfusion imaging (MPI) have frequently been identified in the presence of left bundle branch block (LBBB) and tend to lower the accuracy of MPI in individuals with normal coronary angiographs. Pharmacologic stress is recognized as the preferred method for MPI in patients with LBBB. In contrast, very few studies have evaluated the effect of right bundle b...

Introduction: To measure radiation exposures rate in low-risk patients having stress-only and stress-rest myocardial perfusion imaging. Methods: This was a prospective study conducted from January 2012 till November 2012 upon patients with low pre-test probability for coronary artery disease (CAD). A stress MPI (stress-only if MPI is normal and no resting study) followed by a resting MPI study...

Abstract Magnetic particle imaging (MPI) is a young modality for biomedical applications. It uses magnetic nanoparticles as tracer material to produce three-dimensional images of the spatial distribution in field-of-view. Since magnetization dynamics are tied hydrodynamic mobility via Brownian relaxation mechanism, MPI also capable mapping local environment during process. influence viscosity o...

Background Regadenoson (Lexiscan; Astellas) is a new vasodilator myocardial stress agent that selectively activates the A2A receptor. Unlike adenosine, regadenoson is easier to administer and results in fewer side effects. Although extensively studied in patients undergoing nuclear myocardial perfusion imaging (MPI), its performance in cardiovascular magnetic resonance (CMR) MPI remains unknown...

BACKGROUND Although pharmacologic stress myocardial perfusion imaging (MPI) and exercise stress MPI have comparable diagnostic accuracy, their comparative value for risk stratification of patients with known or suspected coronary disease is not known. METHODS AND RESULTS The data of 14,918 patients were combined from 24 studies evaluating prognosis in patients undergoing either pharmacologic ...

introduction: leptin, secreted from adipose tissue may have some correlation with coronary artery disease according to some reports in literature. the mean concentration of plasma leptin in patients with normal and abnormal myocardial perfusion imaging (mpi) and relation of leptin levels, independently to abnormality in mpi after correction for body mass index (bmi) was evaluated. methods: as a...

This review considers the changing nature of surgical risk assessment and the definition of risk; discusses the pathophysiology of perioperative myocardial infarction in relation to tests of coronary flow reserve; surveys the extensive literature on preoperative myocardial perfusion imaging (MPI) and outlines key trends; presents practical points on image interpretation; addresses the needs of ...

BACKGROUND In patients with ischemic heart disease, accurate assessment of the extent of myocardial perfusion deficit may be important in predicting prognosis of clinical cardiac outcomes. The aim of this study was to compare the ability of three dimensional (3D) and of two dimensional (2D) multi-slice myocardial perfusion imaging (MPI) using cardiovascular magnetic resonance (CMR) in determini...