Table 1 MRI acquisition parameters

ECG type

prospectively gated

retrospectively gated

triggered (diastolic phase)

Cine Frames

20

20

–

Respiratory Motion Strategy

breath holding

free-breathing

breath holding

Repetition Time (ms)

3.1–4.1

5.8–8.4

4.0–4.8

Echo Time (ms)

1.1–1.2

2.0–2.5

1.4–2.2

Flip Angle (degrees)

45

8–12

20–45

Inversion Time (μs)

–

–

183–400

Field of View (cm²)

39 × 39

–

35 × 35

Slice Thickness (mm)

8

–

8

Imaging Volume (cm³)

–

32 × 32 × 20

–

Acquired Spatial Resolution (mm)

1.74 × 1.74

1.25 × 1.25 × 1.25

2.03 × 2.03

Reconstructed Spatial Resolution (mm)

1.25 × 1.25

High resolution reconstruction:1.25 × 1.25 × 1.25

Low resolution reconstruction:

2.5 × 2.5 × 2.5

1.37 × 1.37

Velocity Encoding (cm/s)

–

100–150

–