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Am J Physiol 209: 705-710, 1965;
0002-9513/65 $5.00
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Krypton 85 myocardial blood flow: precordial scintillation versus coronary sinus sampling

Michael D. Klein 1, Lawrence S. Cohen 1, and Richard Gorlin 1

1 Medical Clinics, Peter Bent Brigham Hospital and Harvard Medical School, Boston, Massachusetts

Myocardial blood flow in human subjects was assessed by comparative simultaneous measurement of krypton 85 radioactive decay from coronary sinus and precordial scintillation. Empirical correction of postclearance background from precordial curves yielded a high degree of correlation between flows derived from the two sampling sites (r = .889, P < .001). Comparison of left and right coronary flows in nine subjects revealed similarity in flow through the two vessels over a wide range of actual flow values (r = .945, P < .001).

Key Words: left and right coronary flow • angina pectoris

Submitted on March 26, 1965






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