This depends on the situation. If it is a more serious rib fracture with poor alignment and alignment, and the fracture is more obviously displaced, it can be detected by CT. If it is a relatively minor fracture, it may often be missed with CT because CT is a tomographic scan, which is equivalent to a photo cut out layer by layer. If you want to confirm the diagnosis with CT, you need to do 3D reconstruction, but it is often more expensive, so generally rib fractures can be confirmed by taking X-rays, and it is cheaper, but overlapping fractures are often missed. In the case of general fractures, taking X-rays is sufficient, and CT is also possible, but it is more than ten times more expensive than plain films. If a fracture does not show up on CT, it means that the fracture is mild and often treated conservatively and heals quickly with oral medications to promote fracture healing and topical creams, and a CT of the chest is available to check.