Mean attenuation values and relative attenuation washout percentages for the 5 PTH-secreting lesions
| Tissue | PTH-Secreting Lesion | Thyroid | Lymph Node | Submandibular Gland |
|---|---|---|---|---|
| Mean HU attenuation in arterial phase | 179.2 | 141.2 | 58.9 | 68.5 |
| SD | 52.1 | 91.3 | 7.3 | 16.6 |
| P value* | 0.27 | 0.003 | 0.005 | |
| Mean HU attenuation in venous phase | 118.6 | 154.5 | 101.0 | 118.0 |
| SD | 34.1 | 23.3 | 9.7 | 6.1 |
| P value* | 0.018 | 0.211 | 0.964 | |
| Mean HU attenuation difference between arterial and venous phase | 60.6 | −13.3 | −42.1 | −49.5 |
| SD | 52.6 | 93.5 | 13.4 | 17.0 |
| P value* | 0.049 | 0.009 | 0.006 | |
| Relative enhancement washout percentage | 30.5 | −65.0 | −74.0 | −80.4 |
| SD | 20.6 | 108.5 | 28.4 | 41.9 |
| P value* | 0.006 | 0.003 | 0.002 |
↵* P value compared with PTH-secreting lesion.