Fig. 3.

a) The trans-axial XCT image of the phantom. The ICG inclusion is held in the glass tube that is seen as a bright circle in the image. b) The plot of the recovered ICG concentration with respect to true ICG concentration. The blue and purple dots represent the recovered values with and without the structural a priori information, respectively. The least squares lines of best fit are the red dashed ones. The recovered ICG concentration shows a linear response with respect to true ICG concentration both with and without the structural a priori information. However, the right values are recovered only when structural a priori information is available.