The indications of thoracic vertebrae lateral radiographs are to check the pain and other discomforts of the thoracic vertebrae, thoracic vertebrae deformity, and thoracic vertebrae trauma and fracture. 1. Thoracic spine pain and other discomforts: when the thoracic spine has pain and discomforts, it may be related to thoracic vertebral body or intervertebral disc lesions, therefore, we can carry out the thoracic spine lateral radiographs to understand the pain situation initially, and we can diagnose some diseases initially, such as thoracic spine degeneration and thoracic vertebral tumors and other lesions. 2. Thoracic vertebral deformity: Thoracic vertebral deformity developmental or secondary kyphosis, scoliosis, etc., in the early stage, the deformity can be clarified through the thoracic vertebral orthopantomography. 3. Thoracic spine trauma and fracture: when trauma causes thoracic spine fracture, such as compression fracture, thoracic spine comminuted fracture, etc., the thoracic spine can be examined by thoracic vertebral orthopantomogram to clarify the fracture situation.