Table 1 Anatomical, imaging and computed parameters for DTI scans on the mouse, rabbit, and sheep hearts.
| Â | Mouse (n = 10) | Rabbit (n = 6) | Sheep (n = 5) |
|---|---|---|---|
Anatomical parameters | Â | Â | Â |
   Apex-to-base length | 6.7 ± 0.5 mm | 19.5 ± 1.9 mm | 76.6 ± 6.8 mm |
   LV wall thickness | 1.5 ± 0.4 mm | 3.9 ± 0.5 mm | 12.5 ± 1.1 mm |
Imaging parameters | Â | Â | Â |
   Scanner field strength | 9.4 T | 7.1 T | 2 T |
   RF Coil diameter | 1.4 cm | 4 cm | 10 cm |
   FOV | 12.8 mm3 | 3.2 cm3 | 10 cm3 |
   Pixel size | 0.10 mm | 0.25 mm | 0.78 mm |
   Diffusion pulse width | 5 ms | 5 ms | 10 ms |
   Diffusion pulse separation | 7.5 ms | 7.7 ms | 15 ms |
   Maximum gradient | 50 G/cm | 40 G/cm | 18 G/cm |
   Diffusion weighting b factor | 1130 s/mm2 | 748 s/mm2 | 1175 s/mm2 |
Computed parameters | Â | Â | Â |
   LV wall thickness in pixels | 15.6 ± 3.6 | 15.7 ± 2.0 | 16.0 ± 1.4 |
   SNR of non-weighted scan | 95 ± 15 | 102 ± 32 | 125 ± 34 |