Safety and Immunogenicity of a Mycoplasma ovipneumoniae bacterin for domestic sheep (Ovis aries).

Background: Mortality from epizootic pneumonia is hindering re-establishment of bighorn sheep populations in western North America. Mycoplasma ovipneumoniae, a primary agent of this disease, is frequently carried asymptomatically by the domestic sheep and goats that constitute the reservoir of this agent for transmission to bighorn sheep. Our long-term objective is to reduce the risk of M.

Effect of a Residual Stenosis by Quantitative Angiography on the Myocardial Contrast Defect Observed Following Coronary Reperfusion Using Intermittent Harmonic Ultrasound Imaging and Intravenous Perfluorocarbon Ultrasound Contrast.

Intermittent harmonic imaging following intravenously injected perfluorocarbon-containing microbubbles can detect myocardial perfusion abnormalities caused by ischemia. It is unknown whether this technique can differentiate viable, ischemic myocardium from infarcted myocardium immediately following coronary reperfusion. The objective of this paper was to determine whether intermittent harmonic imaging with intravenous microbubbles could define myocardial perfusion abnormalities following reperfusion.

Correlation between quantitative angiographic lesion severity and myocardial contrast intensity during a continuous infusion of perfluorocarbon-containing microbubbles.

The purpose of this study was to determine whether quantitative measurements of myocardial videointensity (MVI) during continuous intravenous infusions of microbubbles could detect differences in coronary artery stenosis severity during dobutamine stress echocardiography. Coronary artery stenoses were created in seven dogs by progressively tightening a snare around the coronary artery. Intravenous infusions of perfluorocarbon microbubbles were given during dobutamine stress.

Smaller intravenous perfluorocarbon-containing microbubbles produce greater myocardial contrast with intermittent harmonic imaging and better delineation of risk area during acute myocardial ischemia.

The purpose of this article was to determine whether applying negative or positive pressure to perfluorocarbon-containing microbubbles before intravenous injection would improve the myocardial contrast when using newer imaging techniques such as harmonic and intermittent imaging. Perfluorocarbon-containing microbubbles were exposed to sustained negative or positive pressure before intravenous injection in 10 dogs. Microbubble size distribution and concentration were measured after each exposure.

Effect of significant two-vessel versus one-vessel coronary artery stenosis on myocardial contrast defects observed with intermittent harmonic imaging after intravenous contrast injection during dobutamine stress echocardiography.

Objectives: We sought to determine the effect of multivessel as opposed to single-vessel coronary artery stenosis on myocardial contrast defects observed with intermittent harmonic imaging and intravenous perfluorocarbon-exposed sonicated dextrose albumin contrast injection.

Background: Intermittent harmonic imaging has permitted the detection of myocardial perfusion abnormalities with an intravenous ultrasound contrast agent. The effect of multivessel disease on inducibility of these perfusion abnormalities is unknown.