Determination of optical properties of normal and adenomatous human colon tissues in vitro using integrating sphere techniques

Table 1 Anisotropy factors, absorption and scattering coefficients of normal and adenomatous human colon mucosa/submucosa at five different wavelengths of laser irradiation by the inverse adding-doubling method.

Tissue	l (nm)	µa(/cm)	µs(/cm)	g
Normal human colon mucosa/submucosa	476.5	2.32±0.09	214±5.35	0.885±0.019
	488.0	3.27±0.13	228±5.69	0.891±0.021
	496.5	2.58±0.10	212±5.27	0.897±0.024
	514.5	3.12±0.12	216±5.38	0.902±0.026
	532.0	3.33±0.14	208±5.16	0.908±0.029
Adenomatous human colon mucosa/submucosa	476.5	5.27±0.21	233±5.72	0.897±0.023
	488.0	5.34±0.22	238±5.84	0.903±0.027
	496.5	4.87±0.19	228±5.67	0.907±0.028
	514.5	4.37±0.17	231±5.69	0.917±0.033
	532.0	5.16±0.20	223±5.63	0.913±0.031

Table 2 Anisotropy factors, absorption and scattering coefficients of normal adenomatous human colon muscle layer/chorion at five different wavelengths of laser irradiation by the inverse adding-doubling method.

Tissue	l (nm)	µa(/cm)	µs(/cm)	g
Normal human colon muscle layer/chorion	476.5	1.31±0.05	221±5.61	0.923±0.037
	488.0	1.73±0.07	215±5.33	0.932±0.044
	496.5	1.27±0.05	200±5.08	0.927±0.041
	514.5	1.14±0.04	189±5.03	0.933±0.045
	532.0	1.53±0.06	193±5.05	0.941±0.048
Adenomatous human colon muscle layer/chorion	476.5	3.17±0.12	233±5.71	0.927±0.042
	488.0	3.51±0.14	223±5.62	0.935±0.046
	496.5	2.90±0.11	216±5.36	0.933±0.044
	514.5	2.57±0.09	198±5.07	0.936±0.047
	532.0	2.75±0.10	208±5.14	0.945±0.049