Radioisotopic Angiocardiography

Radioisotopic angiocardiography. Wide scope of applicability in diagnosis and evaluation of therapy in diseases of the heart and great vessels.

Radioisotopic angiocardiography has been performed in 120 patients after the intravenous injection of 99mTc pertechnetate. A scintillation camera and a variable timelapse videoscintiscope were used. The results indicate that the method permits identification and physiologic assessment of a wide variety of congenital and acquired cardiovascular lesions, including septal defects, valvular stenosi...

Noninvasive Radioisotopic Technique

At 8 and 32 hours after saphenous vein bypass graft surgery in six dogs, in vivo images of the graft were obtained with a gamma camera after intravenous injection, 2 hours postoperatively, of autologous platelets labeled with indium-111. Platelet deposition in the grafts could be imaged in vivo from the scintiphotos. In vitro images of the excised heart showed saphenous vein graft uptake confir...

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.

The electrocardiogram during angiocardiography.

It is often said that angiocardiography carries little risk, and series of more than a thousand injections without a death are on record (Sussman, 1948; Horger et al., 1951). During recent years, however, more than thirty deaths have been reported-the majority in children with cyanotic congenital heart disease. The exact cause of these deaths has still to be discovered. When Mr. R. C. Brock beg...