[Evaluation of the size of the microsphere loss from the myocardium in rats in a chronic experiment].
The loss of radioactive microspheres (15 microns in diameter) from the rat myocardium was investigated during chronic experiment. Microspheres were injected to donor rats, the hearts were removed 20-30 min later and the number of microspheres trapped in the heart was determined on gamma-counter. After that the hearts were transplanted into the abdominal cavity of recipient rats using microsurgery technique. 5-24 days later the recipients were killed, the transplanted hearts were removed and radioactivity was measured again. It was shown that not more than 10% of microspheres were lost from the myocardium over a 5-24-day period, with the value of microsphere loss independent of the time period.
D000818:Animals; D006328:Cardiac Catheterization; D002302:Cardiac Output; D003326:Coronary Circulation; D006321:Heart / Q000000981:diagnostic imaging; D016027:Heart Transplantation; D008297:Male; D008863:Microspheres; D011868:Radioisotopes; D011877:Radionuclide Imaging; D051381:Rats; D011919:Rats, Inbred Strains; D012538:Scandium; D013997:Time Factors
D011868:Radioisotopes; D012538:Scandium
Otsenka velichiny poteri mikrosfer iz miokarda krysy v usloviiakh khronicheskogo éksperimenta.