CT image of polypeptide-induced calcification. a) Ultrasound imaging, CT images, and quantification of calcification signals in lung tumors (n = 8), calcified lung tumors (n = 8), and lung nodules (n = 10) in the lungs of mice. The red box indicates a positive lesion. b) PET/CT scanning of the whole body of the mice and quantification of calcification signals in the lung tissues. The red box indicates the positive area. c) Bioluminescence images of mice subjected to the different treatments. d) CT imaging and quantification of calcification signals in mice. The red box indicates the positive area.