Thoracic spine MRI scanning can show the thoracic spine bone, soft tissue and thoracic medulla very well, which is important for the diagnosis of thoracic spine trauma, thoracic spine degenerative diseases, tumors and other diseases. 1. Thoracic spine trauma: MRI scanning of thoracic spine can clearly show whether there is thoracic spine fracture, bone marrow edema, paraspinal ligament injury, etc. It can also assess the dural sac compression and determine whether there is spinal cord injury, which is important for the formulation of treatment plan. 2. Degenerative diseases of thoracic spine: It can clearly diagnose the herniated intervertebral disc, ossification of ligamentum flavum, thoracic spinal stenosis, etc., and assess the severity of the disease to guide the next treatment plan. 3. Tumor: MRI scanning of thoracic spine is good for displaying thoracic spine tumors, which can clearly observe the tumor size, location, relationship with surrounding structures, bone destruction and spinal cord compression, etc., which is very important for the formulation of surgical plan.