Scientific Reports

Table 5 Minimal values of the multi-spectral optoacoustic tomography measurements (MSOT signal in AU) of the two parotid tumor entities.

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

	Pleomorphic adenoma		Warthin tumor		p
	Mean	SD	Mean	SD	p
Tumor side
ROI, mm³	64.15	40.80	77.70	43.94	0.226
Depth, minimal, cm	5.51	1.88	5.42	1.96	0.457
700 nm	− 61.52	382.84	− 310.26	440.67	0.082
730 nm	− 42.16	379.24	− 276.95	433.67	0.091
760 nm	− 13.21	334.69	− 197.11	388.89	0.120
800 nm	− 21.23	337.83	− 223.84	342.79	0.083
850 nm	14.12	277.87	− 167.26	296.43	0.072
900 nm	106.18	225.14	− 34.18	449.08	0.187
HbR	0.02	0.03	0.00	0.00	0.008
HbO₂	0.11	0.09	0.04	0.09	0.072
HbT	0.37	0.14	0.29	0.22	0.030
sO₂	1014.91	554.26	1369.72	739.11	0.160
Contralateral side
ROI, mm³	64.16	40.81	77.70	43.94	0.226
Depth, minimal, cm	5.90	1.84	5.55	1.89	0.328
700 nm	− 242.59	351.30	− 332.07	361.40	0.276
730 nm	− 215.47	356.78	− 288.31	338.07	0.308
760 nm	− 179.96	334.39	− 226.80	305.10	0.362
800 nm	− 172.34	311.84	− 209.25	245.49	0.374
850 nm	− 146.10	281.76	− 169.25	197.73	0.407
900 nm	− 115.10	251.91	− 182.69	340.05	0.300
HbR	0.00	0.01	0.00	0.01	0.377
HbO₂	0.02	0.02	0.00	0.00	0.007
HbT	0.05	0.06	0.02	0.03	0.041
sO₂	0.18	0.14	0.14	0.18	0.307
Ratio
ROI, mm³	1.00	0.00	1.00	0.00	0.123
Depth, minimal, cm	0.95	0.16	0.98	0.09	0.296
700 nm	− 4.62	12.05	0.19	2.43	0.079
730 nm	4.46	10.65	5.64	21.57	0.438
760 nm	9.55	25.28	− 0.40	1.86	0.076
800 nm	4.75	8.13	− 3.24	12.16	0.042
850 nm	3.48	5.94	− 1.11	8.82	0.084
900 nm	1.74	2.09	1.81	3.52	0.476
HbR	3.50		0.00	0.00
HbO₂	2.30	1.36	0.00		0.114
HbT	1.84	1.06	0.33	0.58	0.033
sO₂	2.83	2.59	4.48	6.48	0.254

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

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