Detection of Circulatory Shunts by Means of External Counting Method Differentiation between ASD and VSD, Semiquantitative Estimation of Left-to-Right Shunt, and the Detection of Right-to-Left Shunt

Open Access

1 January 1969

journal article
Published by Japanese Circulation Society in Japanese Circulation Journal

Vol. 33 (8) , 815-821
https://doi.org/10.1253/jcj.33.815

Abstract

1). Isotope dilution curves were obtained in 51 patients with left-to-right shunt. 2) As the cardiac dilution curve for ASD had a characteristic pattern, ASD was able to be differentiated from VSD by means of the dilution curve. 3) K·BT·10^-1 of the pulmonary vascular dilution curve was represented as an index of the presence of the left-to-right shunt. 4) C₂/C₁ of the pulmonary vascular dilution curve was increased in proportion to the magnitude of the left-to-right shunt rate. 5) It was easy to detect the presence of the right-to-left shunt, using the ¹³¹I-MAA.

Keywords

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