ECG gated radionuclide plethysmography - A method for the assessment of pulmonary systolic blood volume increase

M. Nitzan, Y. Mahler, S. Yaffe, R. Marziano, M. Bocher, R. Chisin

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

During cardiac systole the stroke volume of blood which is ejected from the right ventricle increases the pulmonary blood volume. This systolic pulmonary blood volume increase is measured by using ECG gated chest scintigrams obtained with 99Tcm-labelled red blood cells. The total radiation counts in a region of interest that includes either the right or the left lung increases during systole. On the average, the increase of the total pulmonary systolic radiation was found to be 62% of the systolic radiation decrease in the left ventricle region of interest. The discrepancy between the value of the systolic pulmonary blood volume increase and that of stroke volume is attributed to blood flow from the lungs into the left atrium during the cardiac systole period.

Original languageEnglish
Article number002
Pages (from-to)21-28
Number of pages8
JournalClinical Physics and Physiological Measurement
Volume13
Issue number1
DOIs
StatePublished - Feb 1992

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