Table 2 Comparison of the multi-spectral optoacoustic tomography measurements (MSOT signal in AU) of pleomorphic adenomas and the normal contralateral parotid gland.

From: Multispectral optoacoustic tomography of benign parotid tumors in vivo: a prospective observational pilot study

 

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

  1. AU arbitrary unit, SD standard deviation, ROI region of interest HbR deoxygenated hemoglobin, HBO2 oxygenated hemoglobin, HbT total hemoglobin, sO2 oxygen saturation.
  2. Significant values are in bold.