Variabilität und Reproduzierbarkeit bei der Bestimmung des linksventrikulären Herzvolumens mittels Cine-MR

Autor:	K.-J. Wolf, P. Büttner, M.-C. Dulce, A. Albrecht, Bernd Hamm, K. Friese
Rok vydání:	1991
Předmět:	Reproducibility Ejection fraction business.industry Radiology Nuclear Medicine and imaging Nuclear medicine business Cardiac axis Mathematics Gradient echo
Zdroj:	RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren. 155:99-108
ISSN:	1438-9010 1438-9029
DOI:	10.1055/s-2008-1033229
Popis:	Sixteen normal individuals were examined on a 1.5 T instrument using gradient echo sequences (cine-MR). The results of various computations were tested with respect to agreement and reproducibility of the methods. The ejection fractions calculated from bi-plane and 3-dimensional reconstructed volumes showed very low standard deviations of mean values (SD less than 2%). Volumes calculated from a single plane produced the greatest scatter of mean values (SC approximately 5%). In all sixteen subjects, the MR findings showed good reproducibility. There was very little inter-observer variability (variability less than 5%). A comparison of various methods showed that bi-plane and monoplane volume calculations obtained by MR in the cardiac axis are more accurate than those obtained by echocardiography (MR:R greater than 0.75, p less than 0.001; echo:R less than 0.75, p greater than 0.05).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::748a9738d3d6a42eab1356f323155e3e https://doi.org/10.1055/s-2008-1033229 Zobrazit plný text záznamu