Simultaneous cardiac output and regional myocardial perfusion determination with PET and nitrogen 13 ammonia View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2003-01

AUTHORS

Jens D. Hove, Klaus F. Kofoed, Hsiao M. Wu, Søren Holm, Lars Friberg, Christian Meyer, Jan Aldershvile, Birger Hesse, Henning Kelbæk

ABSTRACT

BACKGROUND: The purpose of this study was to evaluate the possibility of measuring cardiac output during positron emission tomography (PET) examination of myocardial perfusion with nitrogen 13 ammonia. METHODS AND RESULTS: In 7 patients undergoing right-sided cardiac catheterization for evaluation of heart failure and 6 patients who had undergone heart transplantation, a thermodilution catheter for continuous measurement of cardiac output was inserted. An N-13 ammonia scan of the heart was subsequently performed, and with use of factor analysis, the time-activity curve from the right ventricle was derived from the dynamic image sequence. The PET-derived cardiac output was subsequently obtained according to the Stewart-Hamilton principle as the amount of injected tracer divided by the area under the time-activity curve. PET-acquired cardiac output measurements correlated closely with the invasively determined values for a wide range of cardiac output values (P < .0001). The mean difference was 0.12 L/min, with an SD of 0.74 L/min. The interobserver variation was low, with a mean difference of 0.06 L/min and an SD of 0.46 L/min. CONCLUSIONS: Cardiac output determination with N-13 ammonia and PET appears to be both accurate and precise and can be performed simultaneously with measurement of myocardial perfusion. More... »

PAGES

28-33

Identifiers

URI

http://scigraph.springernature.com/pub.10.1067/mnc.2003.30

DOI

http://dx.doi.org/10.1067/mnc.2003.30

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1015549006

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/12569328


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44 schema:description BACKGROUND: The purpose of this study was to evaluate the possibility of measuring cardiac output during positron emission tomography (PET) examination of myocardial perfusion with nitrogen 13 ammonia. METHODS AND RESULTS: In 7 patients undergoing right-sided cardiac catheterization for evaluation of heart failure and 6 patients who had undergone heart transplantation, a thermodilution catheter for continuous measurement of cardiac output was inserted. An N-13 ammonia scan of the heart was subsequently performed, and with use of factor analysis, the time-activity curve from the right ventricle was derived from the dynamic image sequence. The PET-derived cardiac output was subsequently obtained according to the Stewart-Hamilton principle as the amount of injected tracer divided by the area under the time-activity curve. PET-acquired cardiac output measurements correlated closely with the invasively determined values for a wide range of cardiac output values (P < .0001). The mean difference was 0.12 L/min, with an SD of 0.74 L/min. The interobserver variation was low, with a mean difference of 0.06 L/min and an SD of 0.46 L/min. CONCLUSIONS: Cardiac output determination with N-13 ammonia and PET appears to be both accurate and precise and can be performed simultaneously with measurement of myocardial perfusion.
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