Toshiba American Medical Systems Celesteion, Item Code: PCA-9000A/2, 9000A/3B, 9000A/2B || This system is designed to acquire CT images, PET images, and fusion images (superimposed PET and CT images). The images that can be acquired include planar images (for any position and from any direction) and volume images (3D images) of the whole human body (including the head). The CT images provide morphological information showing the positional relationships between the lesion and adjacent tissues, while the PET images provide functional information based on the uptake of the injected radioisotope.