Table 1 Imaging parameters of MRI

Contrast-enhanced

No

Yes

No

Acquisition mode

Free breathing

Free breathing

Gated

Sequence

TWIST-VIBE

Star-VIBE

TSE

Fat suppression

not applicable (N/A)

SPAIR

SPAIR

Turbo factor

N/A

N/A

43

Flip angle (◦)

5

9

72

Echo trains per slice

N/A

N/A

6

Parallel imaging (factor)

CAIPIRINHA (4)

N/A

GRAPPA

Acceleration factor (PE)

2

N/A

3

Partial Fourier

6/8

7/8

N/A

TR (ms)

3.44

2.83

1090

TE (ms)

1.23/2.45

1.48

84

Bandwidth (Hz/pixel)

1420

820

781

Matrix size

160 × 128 × 64

320 × 320 × 72

256 × 256 × 40

Voxel size (mm)

2.7 × 2.7 × 2.7

1.2 × 1.2 × 3.0

1.5 × 1.5 × 5.0

Acquisition time

0.69 s per 3D frame

173 s

60 s

Number of frames

72

N/A

N/A