Serial measurements of left ventricular posterior wall movement were made in eight patients with acute myocardial infarction by an ultrasound technique. Maximum posterior wall velocity and excursion were decreased during the first 36-hour period after infarction. In two patients a reduction in posterior wall velocity was associated with an increased pulmonary artery pressure and as the pressure...

Background Adenosine stress magnetic resonance is highly accurate for the detection of myocardial perfusion abnormalities. Visual assessment of inducible wall motion abnormalities (IWMA) during adenosine has low sensitivity but high specificity since only high-grade perfusion defects are associated with detectable IWMAs. The novel technique Feature Tracking (FT) measures myocardial strain and g...

Methods Phase contrast MRI [1] was used to measure regional three-directional LV myocardial motion with high temporal resolution in mice (N=18), rabbits (N=8), and humans (N=20). Radial, long-axis, and rotational myocardial velocities were acquired in left ventricular basal, mid-ventricular, and apical short-axis locations (see Table 1 for scan parameters). Positive radial velocities indicate c...

IIn the last decade, noninvasive cardiac imaging has played an increasing role in cardiology. As one of the most widespread clinically used techniques, echocardiography has witnessed several technical developments in imaging modalities and image analysis. One of the most recent has been the introduction of velocity-based strain-rate imaging and speckle tracking to quantify regional deformation....

OBJECTIVE In chronic fatigue syndrome (CFS), only a few imaging and histopathological studies have previously assessed either cardiac dimensions/function or myocardial tissue, suggesting smaller left ventricular (LV) dimensions, LV wall motion abnormalities and occasionally viral persistence that may lead to cardiomyopathy. The present study with cardiac magnetic resonance (CMR) imaging is the ...

Background: Acute Myocardial Infarction (AMI) is the leading cause of disability and death in Iran and many other countries. Objective: To investigate the prognostic value of CCL5 and CCL18 in patients with acute myocardial ischemia. Methods: In this cohort study we recruited and followed 50 patients with acute anterior myocardial infarction (AAMI) for developing cardiovascular accidents in a ...

Disclaimer This health technology scientific literature review was prepared by the Medical Advisory Secretariat, Ontario Ministry of Health and Long-Term Care arising from analysis, interpretation and comparison of scientific research and/or technology assessments conducted by other organizations. While every effort has been made to do so, this document may not fully reflect scientific research...

INTRODUCTION The presence of a velocity in isovolumic contraction phase (Vivc) evaluated using tissue Pulse wave Doppler myocardial imaging (PWDMI) correlates with a transmural extent of scar after myocardial infarction. The possible clinical usefulness of Vivc evaluated using color Doppler myocardial imaging (CDMI) in detection of a scar after myocardial infarction extent in patients with coro...

AIMS Transmyocardial laser revascularization is a treatment for patients with severe angina pectoris not eligible for conventional revascularization. The effects on myocardial function and reversible ischaemia have not been clarified. METHODS AND RESULTS One hundred patients with refractory angina not eligible for conventional revascularization were randomized 1:1 to receive continued optimal...

AIMS Myocardial contrast perfusion echocardiography (MCE) allows simultaneous assessment of perfusion and function. However, low frame rate during MCE may reduce the viewer's ability to discern contractile dysfunction. This study sought to compare MCE and left ventricular opacification (LVO) settings with regard to wall motion abnormalities (WMA) at rest and during dobutamine stress echocardiog...