MRI of the thoracic spine can detect the following types of lesions: 1) vertebral lesions: degenerative changes, vertebral hemangioma, vertebral tuberculosis and vertebral metastases; 2) whether the intervertebral disc is herniated; 3) intradural lesions: the greatest advantage of MRI is that it can observe not only the vertebral body and intervertebral disc, but also intradural lesions, such as spinal astrocytoma, ventricular meningioma and hemangioblastoma, as well as Vascular malformations, extramedullary tumors including spinal meningiomas, neurogenic tumors, etc.; 4, benign spinal cord lesions: such as poliomyelitis, spinal cavernous disease. Therefore, if a patient is suspected of having intraspinal lesions in the thoracic spine, MRI is the preferred examination modality. Before the thoracic MRI examination, metal objects on the body surface, such as cell phones, keys, magnetic cards, etc., need to be removed. Patients should be careful to keep their bodies still during the examination so that clear images can be obtained. MRI of the thoracic spine can detect lesions in the vertebral body and intervertebral discs as well as the spinal canal, and if lesions are found, patients need to seek medical attention promptly.