Quantitative Angiocardiography

Quantitative angiocardiography. I. The normal left ventricle in man.

IN THE PAST, clinical assessment of left ventricular function has been largely limited to the measurement of pressure and flow. Recently methods have been developed for the in vivo measurement of left ventricular volumes in man.1-3 Rackley and associates4 have described a method for determining left ventricular mass. The determination of left ventricular volume and mass are of definite help in ...

Quantitative radionuclide angiocardiography: determination of Qp: Qs in children.

A new method of determining pulmonary-to-systemic flow ratios (Qp/Qs) in patients with left-to-right shunts using radionuclide angiocardiography is described. It involves the analysis of pulmonary time-activity histograms using a gamma-variate model. It appears to be simple, relatively atraumatic, and superior to the methods using C2/C1 ratios because, in addition to accurately detecting the pr...

Ventricular performance after angiocardiography.

Ventricular performance was assessed before and after angiocardiography in 22 patients with normal left ventricle, mitral stenosis, aortic stenosis, and myocardial disease. The increased circulating blood volume known to occur after angiocardiography is a determinant of the increased ventricular pre-load. The after-load is unchanged. Patients with normal left ventricle and some patients with va...

Contrast agents in angiocardiography.

Quantitative angiocardiography. 3. Relationships of left ventricular pressure, volume, and mass in aortic valve disease.