Table 2 Comparison of the multi-spectral optoacoustic tomography measurements (MSOT signal in AU) of pleomorphic adenomas and the normal contralateral parotid gland.
Tumor side | Contralateral side | p | |||
|---|---|---|---|---|---|
Mean | SD | Mean | SD | ||
ROI, mm3 | 64.15 | 40.80 | 64.16 | 40.81 | 0.343 |
Depth, minimal, cm | 5.51 | 1.88 | 5.90 | 1.84 | 0.343 |
Mean AU values | |||||
700 nm | 400.35 | 126.11 | 262.73 | 30.22 | 0.008 |
730 nm | 382.13 | 128.96 | 254.03 | 30.57 | 0.010 |
760 nm | 394.81 | 124.13 | 255.42 | 34.78 | 0.005 |
800 nm | 346.17 | 111.06 | 235.87 | 26.52 | 0.010 |
850 nm | 354.27 | 112.93 | 242.12 | 28.45 | 0.010 |
900 nm | 565.69 | 241.60 | 366.76 | 160.30 | 0.001 |
HbR | 0.18 | 0.07 | 0.12 | 0.02 | 0.020 |
HbO2 | 0.29 | 0.12 | 0.19 | 0.07 | 0.001 |
HbT | 0.47 | 0.14 | 0.31 | 0.06 | 0.003 |
sO2 | 0.62 | 0.11 | 0.60 | 0.10 | 0.350 |
Minimal AU values | |||||
700 nm | − 61.52 | 382.84 | − 242.59 | 351.30 | 0.049 |
730 nm | − 42.16 | 379.24 | − 215.47 | 356.78 | 0.055 |
760 nm | − 13.21 | 334.69 | − 179.96 | 334.39 | 0.054 |
800 nm | − 21.23 | 337.83 | − 172.34 | 311.84 | 0.072 |
850 nm | 14.12 | 277.87 | − 146.10 | 281.76 | 0.036 |
900 nm | 106.18 | 225.14 | − 115.10 | 251.91 | 0.008 |
HbR | 0.02 | 0.03 | 0.00 | 0.01 | 0.033 |
HbO2 | 0.07 | 0.05 | 0.02 | 0.02 | 0.005 |
HbT | 0.11 | 0.09 | 0.05 | 0.06 | 0.014 |
sO2 | 0.37 | 0.14 | 0.18 | 0.14 | < 0.0001 |
Maximal values | |||||
700 nm | 1014.91 | 554.26 | 883.31 | 492.03 | 0.187 |
730 nm | 925.72 | 542.10 | 840.67 | 513.57 | 0.252 |
760 nm | 906.69 | 495.77 | 838.73 | 502.56 | 0.275 |
800 nm | 784.83 | 465.09 | 800.96 | 482.77 | 0.439 |
850 nm | 776.88 | 430.63 | 797.03 | 449.77 | 0.420 |
900 nm | 1144.68 | 574.99 | 1097.48 | 670.48 | 0.369 |
HbR | 0.49 | 0.31 | 0.42 | 0.24 | 0.185 |
HbO2 | 0.62 | 0.28 | 1.11 | 0.44 | 0.007 |
HbT | 1.00 | 0.51 | 0.98 | 0.55 | 0.442 |
sO2 | 0.90 | 0.11 | 0.98 | 0.04 | 0.023 |