Measurement of Coronary Blood Flow by External Counting with Radioactive Rubidium
نویسندگان
چکیده
منابع مشابه
Measurement of coronary blood flow by external counting with radioactive rubidium. Critical appraisal and validation of the method.
T HE MYOCARDIAL clearance of potassium (MCK) can be measured by means of precordial counting after single intravenous injection of 42KC1 or 86RbCl.1 It may be considered to measure coronary blood flow per unit mass of myocardium under the assumption that the average extraction of the indicator by the myocardium during the first minutes after injection does not differ significantly from the aver...
متن کاملThe measurement of cerebral blood flow by external isotope counting.
The Kety-Schmidt nitrous oxide method (2) is presently the only well-accepted technique for the quantitative estimation of human cerebral perfusion. In spite of theoretical objections (3) and practical limitations it has provided a wealth of otherwise unobtainable information. The procedure is tedious, however, and has remained predominantly a laboratory research tool. Efforts have continued to...
متن کاملEvaluation of Myocardial Blood Perfusion in Man with Radioactive Potassium or Rubidium and Precordial Counting.
T HE purposes of this paper are (1) to describe the theoretical foundations and the technic for the measurement of the myocardial clearance of potassium by means of precordial counting and single intravenous injection of K42C1 or Rb86Cl; (2) to report the results obtained in subjects with normal cardiovascular systems and in subjects with coronary insufficiency in whom the myocardial clearance ...
متن کاملMeasurement of coronary blood flow using radioactive iodine compared with nitrous oxide.
Q measurement of coronary blood flow by indicator-dilution methods has been attempted by various groups within the past five years. The theory upon which these studies have been based is that after injection into either the pulmonary artery or left ventricle, the first activated blood to reach the right ventricle on recirculation returns by way of the coronary vessels. Henly and eo-workers rapi...
متن کاملSerial measurement of cerebral blood flow using external counting of microspheres.
Described is a modified method of measuring organ blood flow which combines the serial injection of a standard dose of microspheres and the external counting of their gamma activity when they are distributed to the tissues. The method produces similar results to measurements of grey matter blood flow by the clearance of 133xenon.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Circulation
سال: 1966
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.33.5.708