Application of DSA three-dimensional reconstruction in percutaneous vertebroplasty of upper

Objective: To evaluate the application value of DSA three-dimensional reconstruction in percutaneous vertebroplasty (PVP). Methods: There were 32 patients with 48 upper thoracic vertebrae (T1-T6). Of which, 10 were compression fracture of vertabral body, 21 were metastatic tumors, 1 was myeloma. Three-dimensional rotary acquisition and three-dimensional reconstruction were carried out before operation, in the course of inserting the needles and after injecting the bone cement. Before the operation, the shape of pedicle and centrum and integrity of bone cortex were observed. During the operation, the direction and location of the needles were all observed. While the distribution of the bone cement in vertebral bodies and leakage of bone cement were observed after the operation. Results: By three-dimensional reconstruction after the operation, leakage of bone cement was found in 8 thoracic vertebrae, 5 of which were leaked into paravertebral space and intervertebral disc, 3 of which were leaked into the spinal canal. There were no severe complications in all patients. Conclusion: Three-dimensional reconstruction of vertebral bodies is a practical way to prevent leakage of bone cement during percutaneous vertebroplasty (PVP) of upper thoracic vertebra. (authors)