A Review of Indocyanine Green Fluorescent Imaging in Surgery

Table 10

The loss factors and corresponding attenuations [dB] of the top five loss factors in ICGA imaging.

Loss factor	Loss	dB
The fluorescence of ICG in blood	0.0027	−25.6
Losses in the tissue above the blood vessel	0.2	−6.9
Quantum efficiency of sensor Φ𝑠	0.25	−6.0
Transmittance of the emission filter	0.3	−5.2
Diffusion losses in the lambertian surface	0.32	−5.0
Subtotal	13.4⋅10^−6	−48.7
Other factors together	0.62	−1.7
Total	8.8⋅10^−6	−50.5