Bước đầu đánh giá vai trò của cộng hưởng từ tim trong chẩn đoán tứ chứng Fallot

Initial evaluation of cardiac magnetic resonance in for diagnosis of Fallot tetralogy

SUMMARY:

Purposes: To apply cardiac magnetic resonance (CMR) for diagnosis preoperative Tetralogy of Fallot patients and to compare the findings on echocardiography with CMR.

Methods and materials: 32 patients were included in a prospective study during the interval from June 2008 to August 2009 at Bach Mai hospital. Both echocardiography and CMR had been perrformed to evaluate the variables: Ejection Fraction (EF), the right ventricular outflow tract, main pulmonary artery (MPA), left and right pulmonary artery (LPA & RPA), major aortopulmonary collateral arteries (MAPCAs)… The correlation between the findings on CMR and echocardiography was compared by using Pearson statistics.

Results: 32 patients (14 males) with average age was 19.94 ± 8.20 (range: 8 -53) y. o. 100% success CMR with average time: 80.93 ± 50.41 minutes. There was a close correlation between the findings on CMR and on echocardiography with Kappa statistics r = 0.63-0.70 (p < 0.05). CMR detect more MAPCAs and additional anomalies than echocardiography.

Conclusions: The results of our study indicate the usefulness of CMR for evaluation pre-operative patients with Tetralogy of Fallot. CMR has more advantages than echocardiography for detection MAPCAs and additional anomalies

Key words: Tetralogy of Fallot; Cardiac magnetic resonance imaging -CMR; Echocardiography