Table 1.

Pearson correlation coefficients ($R$ value) for linear regression of hyperspectral imaging (HSI) and photoacoustic tomography (PAT) signal and absorption correlation.

	0% ${\mathrm{sO}}_2$	30% ${\mathrm{sO}}_2$	50% ${\mathrm{sO}}_2$	70% ${\mathrm{sO}}_2$	100% ${\mathrm{sO}}_2$
HSI	0.85	0.99	0.98	0.90	0.97
PAT	0.85	0.83	0.87	0.93	0.99