[Variability and reproducibility in the determination of left-ventricular heart volume by cine-MR. A comparison of measurement methods].
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).
Dulce
M C
MC
Radiologische Klinik, Universitätsklinikum Steglitz, Freie Universität Berlin.
Friese
K
K
Albrecht
A
A
Hamm
B
B
Büttner
P
P
Wolf
K J
KJ
D000328:Adult; D002306:Cardiac Volume; D004452:Echocardiography; D005260:Female; D006321:Heart / Q000033:anatomy & histology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods* / Q000706:statistics & numerical data; D008297:Male; D009040:Motion Pictures; D015588:Observer Variation; D011446:Prospective Studies; D012016:Reference Values; D015203:Reproducibility of Results; D016277:Ventricular Function, Left
Variabilität und Reproduzierbarkeit bei der Bestimmung des linksventrikulären Herzvolumens mittels Cine-MR. Vergleich unterschiedlicher Messmethoden.