Table 1.
Characteristics of the patient population and scan parameters.
| mean ± std | range | ||
|---|---|---|---|
| Patient statistics: | Gender | 15 males, 8 females | |
| Age [years] | 6.3±5.2 | 0–22.1 | |
| Heart rate [beats/min] | 92.1±23.4 | 55–143 | |
| Weight [kg] | 20.3±9.8 | 3–38.9 | |
| Congenital heart defect* | |||
| Congenitally corrected TGA | 17.4% (N = 4) | ||
| Repaired Tetralogy of Fallot | 13.0% (3) | ||
| Heterotaxia | 8.7% (2) | ||
| Bicuspid aortic valve | 4.4% (1) | ||
| Hypoplastic left heart | 4.4% (1) | ||
| Hypoplastic right ventricle | 4.4% (1) | ||
| Coarctation of aorta | 8.7% (2) | ||
| Aortic arch hypoplasia | 4.4% (1) | ||
| Congenital pulmonary stenosis | 4.4% (1) | ||
| Repaired TGA | 4.4% (1) | ||
| Shone’s syndrome | 4.4% (1) | ||
| Other (normal anatomy) | 21.7% (5) | ||
|
| |||
| Scan setup: | Matrix | 320×220×120 | |
| Flip angle [degree] | 15° | ||
| Bandwidth [kHz] | ±83.33 | ||
| Velocity-encoding [cm/sec] | 250 in all 3 axes | ||
| Field of view [cm] | (25.0±2.2, 17.5±1.6, 16.9±1.7) | ||
| TE [msec] | 1.8±0.03 | 1.8–1.9 | |
| TR [msec] | 9.1±0.09 | 9.0–9.4 | |
| Time per TR for fat-saturation [msec] | 5.1 | ||
| Reduction factor (R) | 19.3±3.7 | 15.0–27.5 | |
| 1. VDPoisson: | Scan time [min] | 9.4±1.4 | 6.1–11.6 |
| Views-per-segment | 3.3±0.8 | 2–6 | |
| 2. VDRad: | Scan time [min] | 8.7±1.6 | 5.8–11.3 |
| k-Space center average | 3.0±1.0 | 2–6 | |
| Method A: | Temporal resolution [msec] | 121.7±28.8 | 72.9–225.6 |
| Methods B–D: | Temporal resolution [msec] | 36.5±0.35 | 36.0–37.5 |
Values are mean ± standard deviation and range if applicable.
*
A summary of the different congenital heart defects is also described with percentage of total patients and number of patients in parenthesis. TGA = transposition of the great arteries.