From: Rapid whole-heart CMR with single volume super-resolution
High-resolution WH-bSSFP | Low-resolution WH-bSSFP | |
---|---|---|
Orientation | Sagittal | Sagittal |
Matrix (kx-ky) | ~ 256 × 144 | ~ 256 × 72 |
Acceleration in ky | ×2 (GRAPPA) | ×2 (GRAPPA) |
GRAPPA reference lines | 24 | 24 |
Partial-Fourier in ky | 6/8 | 6/8 |
FOV x-y (mm) | ~ 400 × 238 | ~ 400 × 238 |
Slices | ~ 96 | ~ 48 |
Slice thickness (mm) | ~ 1.6 | ~ 3.2 |
Partial-Fourier in kz | 6/8 | 6/8 |
FOV z (mm) | ~ 154 | ~ 154 |
Flip angle (deg) | 90o | 90o |
TE/TR (ms) | ~ 1.6/~ 3.6 | ~ 1.6/~ 3.6 |
Bandwidth (Hz/Pixel) | ~ 592 | ~ 592 |
Lines per segment | ~ 30 | ~ 30 |
Cardiac triggering | Yes | Yes |
Respiratory navigator | Yes (window 3 mm) | Yes (window 3 mm) |
Spatial resolution (mm) | ~ 1.6 × 1.6 × 1.6 | ~ 1.6 × 3.2 × 3.2 |
Temporal resolution (ms) | ~ 108 | ~ 108 |
Total acquisition time (mins) | ~ 8.1 (range: 3.3–14.8) | ~ 2.9 (range: 1.1–5.0) |