[Pre- and postoperative evaluation of ventricular function, muscle mass and valve morphology by magnetic resonance tomography in Ebstein's anomaly].
OBJECTIVE
To evaluate the value of MRT with spin echo (SE) and CINE gradient echo (GE) sequences for the pre- and postoperative assessment of patients with Ebstein's anomaly.


METHODS
Twelve patients within the ages of four to 49 years (mean 22 +/- 12 years) were examined pre- (n = 5) or postoperatively (n = 7) after tricuspid valve reconstruction with a 1.5 T scanner. For the anatomical assessment, an ECG-gated transverse SE-sequence, for the assessment of valve morphology and function as well as for volumetry a CINE GE-sequence with retrospective gating was used. With the use of the multislice-multiphase technique, after summing up the manually outlined epi- and endocardial areas, endsystolic (ESV) and enddiastolic volumes (EDV), ejection fraction (EF), stroke volume (SV), and muscle mass (MM) were calculated for both ventricles.


RESULTS
The differentiation of the displaced parts of the tricuspid valve (TV) was insufficient with static SE, but was possible in all patients with CINE-MRT. Like in Doppler echocardiography, a qualitative assessment of tricuspid insufficiency was possible in CINE-MRT, the mean incompetence grade preoperative was 1.8 (+/- 0.8), postoperative 0.7 (+/- 0.5). The mean RV-EF in the preoperative group was 41.8% (+/- 6.4), in the postoperative group 47.9% (+/- 10.6), the mean LV-EF preoperative 47.4% (+/- 8.5%), postoperative 63.0% (+/- 9.4).


CONCLUSIONS
CINE-MRT should rather be used than SE for the assessment of valve morphology. EF, muscle mass and tricuspid incompetence can also be calculated pre- and postoperative with CINE-MRT.
Gutberlet
M
M
Klinik für Strahlenheilkunde, Charité, Deutsches Herzzentrum Berlin. matthias.gutberlet@charite.de
Oellinger
H
H
Ewert
P
P
Nagdyman
N
N
Amthauer
H
H
Hoffmann
T
T
Hetzer
R
R
Lange
P
P
Felix
R
R
D000293:Adolescent; D000328:Adult; D002675:Child, Preschool; D004437:Ebstein Anomaly / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006334:Heart Function Tests; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome; D014261:Tricuspid Valve / Q000473:pathology / Q000601:surgery
Prä- und postoperative Beurteilung der ventrikulären Funktion, Muskelmasse und Klappenmorphologie bei der Ebstein-Anomalie mit der Magnetresonanztomographie.