Abstract
Objectives. This study assessed the usefulness and safety of magnetic resonance imaging (MRI) for systematically diagnosing heteroxia in infants.Background. Although it is important to diagnose and treat infants with heteroxia, which is associated with viscerobronchil cardiovascular anomalies, systematic diagnosis of these anomalies by a single imaging technique is difficult.Methods. Twenty patients with heterotaxia were evaluated. The infants ranged in age from 21 days to 12 monhs (average 5.2 months, average body weight 4.3 kg). Electrocardiography gated MRI was performed by spin echo imaging techniques operating at 0.5 at 0.5 tesla.Results. In all 20 patients, MRI results were sufficient to evaluate these anomalies without serious complications. In 17 patients, neither a spleen was visualized. In all 20 patients, bronchial anatomies were clearly visualized (bilateral eparterial bronchi in 14 patients, bilateral hyparterial bronchi in 2 and normal bronchial patterns in 4). Additionally, in a comparison of 149 of cardiovascular anatomy by MRI with those by angiography, descrepancies were found in only 10 observations (6.7%).Conclusion. Magnetic resonance imaging was found to be safe and very useful for the systematic diagnosis of heterotaxia in infants.
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