[Quantification of right ventricular function in congenital heart disease: correlation of 3D echocardiography and MRI as complementary methods].
OBJECTIVE
In congenital heart disease, the exact determination of the right ventricular function is of high importance for therapeutic and especially surgical planning. The aim of this study was to correlate the parameters of the right ventricular function in MRI and 3D echocardiography to determine the agreement of both modalities.


METHODS
In 18 patients suffering from congenital heart disease, 3D echocardiography was performed using a Philips Sonos 7500 system. In MRI short axis slices with a 4-mm distance were acquired using an SSFP sequence on a Siemens Sonata or Symphony System. Volumetry for both modalities was performed on an external workstation (Tomtec) using the EchoView software.


RESULTS
Enddiastolic and endsystolic volumes showed a highly significant correlation with coefficients of 0.996 and 0.990, respectively. In echocardiography there was a systematic slight underestimation of enddiastolic volumes and overestimation of endsystolic volumes. The Wilcoxon test did not show significant differences between the volumes and ejection fractions assessed by both modalities.


CONCLUSIONS
There is an excellent correlation in the quantification of right ventricular volumes in MRI and 3D echocardiography, which allows a comparison of acquired volumes in clinical follow-up.
Johnson
T R
TR
Institut für Klinische Radiologie, Universität München--Klinikum Grosshadern. thorsten.johnson@med.uni-muenchen.de
Hoch
M
M
Huber
A
A
Römer
U
U
Reiser
M F
MF
Schönberg
S O
SO
Netz
H
H
D000293:Adolescent; D002648:Child; D019560:Echocardiography, Three-Dimensional / Q000379:methods*; D005260:Female; D006330:Heart Defects, Congenital / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013223:Statistics as Topic; D018497:Ventricular Dysfunction, Right / Q000175:diagnosis* / Q000209:etiology