Fig. 8.

The reconstruction results from the dynamic in vivo experiment, obtained by using the conventional and the re-assembled measurement data. (a) The x-ray computed tomography image of liver region. (b) and (c) The corresponding fluorescence tomographic images that are imaged about 8 min after ICG injection. (b) The reconstruction results obtained by using the conventional assembled measurement data (120-frame). (c) The reconstruction result obtained by using the re-assembled measurement data (2880-frame). The conventional assembled or re-assembled measurement sequences are reconstructed by the KL-based method. The volume considered for reconstruction is a $1.8\text{cm}\times 2.4\text{cm}\times 3.1\text{cm}$ 3-D region and sampled to $19\times 25\times 32$ voxels. The 5,466 voxels inside the imaged object and 19,980 source-detector pairs are used in the reconstruction process of KL domain. The same imaging model $W_1$ is used in the two assembling modes. To improve the reconstruction quality in in vivo experiment, the reconstruction is performed incorporating a heterogeneous forward model. All images are displayed at the same range.