B-ultrasound is an examination that collects the reflected wave of B-ultrasound through a probe and converts it into an image. Mainly used for the examination of substantive organs, such as thyroid, liver and gallbladder, pancreas, uterine appendages, bladder, kidney, heart and so on.
CT examination is an organ X-ray examination collected by detector and reconstructed by computer, which is mainly used for examination of skull, vertebral body, intervertebral disc, lung, liver, gallbladder, pancreas, kidney, uterus, appendix and bones.