| Characteristic | Patients (n = 17) | Controls (n = 17) |
| Male/female | 13 (76%)/4 (24%) | 13 (76%)/4 (24%) |
| Age at ASO (days)* | 16 (23) | – |
| Age at MRI (years)* | 16.4 (3.2) | 16.5 (3.6) |
| Height at MRI (cm)* | 169 (13) | 169 (12) |
| Weight at MRI (kg)* | 61 (170 | 60 (13) |
| Body surface area at MRI (m2)*† | 1.7 (0.3) | 1.7 (0.2) |
| Systolic/diastolic BP at MRI (mm Hg)* | 124/74 (20/18) | 121/69 (12/10) |
| Heart rate (beats/min) | 74 (16) | 69 (9) |
*Values are mean (SD).
†According to the Mosteller formula: √ [height (cm)× weight (kg)/3600].
ASO, arterial switch operation; BP, blood pressure; MRI, magnetic resonance imaging.