X-rays work by using their greater penetration for scanning, which is a three-dimensional, overlapping image. CT scans are tomographic scans using stronger X-rays, which are observed in cross-sectional slices of objects and can reveal subtle internal lesions. MRI is the use of a larger magnetic field to observe the movement of water molecules in the human body and imaging through computer processing, but there are several disadvantages, such as particularly long imaging times, high examination costs, and more contraindications. Among the above three examination modalities, X-ray and CT examination can observe skeletal system lesions, CT and MRI can observe neurological lesions, and MRI has the main advantage in observing soft tissue lesions, such as joint ligaments and cartilage.