Table 1.
Ratio of signal intensity (SI) by MR pulse sequence at 3 T of region of interest to that of skeletal muscle in 2 clinically normal dogs (Normal) compared with 7 dogs with B-cell lymphoma and 3 dogs with myelodysplastic syndrome (Affected)
| T1-weighted |
T1-weighted after IV Gd contrast |
T2-weighted |
In-phase |
Out-of-phase |
Short tau inversion recovery |
|||||||
| SI ratio | Normal | Affected | Normal | Affected | Normal | Affected | Normal | Affected | Normal | Affected | Normal | Affected |
| 0.4–0.49 | Liver (0.47) | |||||||||||
| 0.5–0.59 | Bladder (0.54) | Liver (0.59) | Bladder (0.59) | |||||||||
| 0.6–0.69 | Liver (0.61) | Bladder (0.62) | Liver (0.62) | Liver (0.67) | Bladder (0.60) | Bladder (0.62) | Bladder (0.66) | |||||
| 0.7–0.79 | Spleen (0.73) | Spleen (0.73) | Spleen (0.75) | Spleen (0.73) | ||||||||
| Medulla (0.74) | ||||||||||||
| 0.8–0.89 | Bladder (0.83) | Medulla (0.86) | Cortex (0.83) | Medulla (0.83) | Node (0.88) | |||||||
| Node (0.86) | Node (0.88) | Medulla (0.89) | Fat (0.85) | Liver (0.89) | ||||||||
| 0.9–0.99 | Cortex (0.93) | Node (0.91) | ||||||||||
| 1.00 | Muscle (1.00) | Muscle (1.00) | Muscle (1.00) | Muscle (1.00) | Muscle (1.00) | Muscle (1.00) | Muscle (1.00) | Muscle (1.00) | Muscle (1.00) | Muscle (1.00) | Muscle (1.00) | Muscle (1.00) |
| 1.01–1.25 | Medulla (1.05) | Cortex (1.01) | Bladder (1.24) | Liver (1.14) | Cortex (1.04) | Cortex (1.06) | Fat (1.22) | |||||
| Medulla (1.02) | Spleen (1.24) | Liver (1.13) | ||||||||||
| Spleen (1.03) | ||||||||||||
| 1.26–1.50 | Cortex (1.40) | Node (1.28) | Spleen (1.44) | Liver (1.36) | Liver (1.36) | Liver (1.26) | ||||||
| Spleen (1.47) | ||||||||||||
| 1.51–1.75 | Node (1.75) | Node (1.58) | Liver (1.57) | Fat (1.59) | Spleen (1.72) | |||||||
| 1.76–1.99 | Node (1.79) | Cortex (1.75) | Spleen (1.85) | Fat (1.94) | Fat (1.79) | Spleen (1.78) | ||||||
| 2.00–2.25 | Fat (2.16) | Cortex (2.08) | ||||||||||
| 2.26–2.50 | Cortex (2.50) | Medulla (2.28) | Node (2.40) | Cortex (2.27) | ||||||||
| 2.51–2.75 | Fat (2.61) | Node (2.60) | Bladder (2.57) | Node (2.52) | ||||||||
| 2.76–2.99 | Fat (2.80) | Medulla (2.98) | Cortex (2.86) | Medulla (2.94) | ||||||||
| 3.00–3.99 | Fat (3.72) | Fat (3.34) | Node (3.89) | Medulla (3.54) | ||||||||
| 4.00–4.99 | Spleen (4.64) | Medulla (4.86) | Bladder (4.28) | |||||||||
| 5.00–5.99 | Cortex (5.44) | Fat (5.46) | ||||||||||
| 6.00–6.99 | Bladder (6.30) | |||||||||||
| 7.00–7.99 | Bladder (7.62) | |||||||||||
| 8.00–8.99 | Fat (8.23) | |||||||||||
| 9.00–9.99 | Medulla (9.66) | |||||||||||