[Application study of vertebral column metastasis tumor with embedment of ¹²⁵I by CT guide]

To discuss the method, safety and effect of embedding ¹²⁵I to Brachytherapy vertebral column metastasis tumor by CT guided.

31 cases of vertebral column metastasis tumor were treated with percutaneous embedding ¹²⁵I by CT guided. They were observed the preoperative size and contour of lesions and were planed the activity and dosage of ¹²⁵I , the PD (prescribed dose) was 110-140 Gy, and the particle activity was 26.0-29.6 Mbq. CT scanning and therapeutic effect analysis were immediately carried out after operations. We also made CT scanning regularly to analyze the effect.

31 cases of vertebral column metastasis tumor were respectively re-examed of CT in 2, 4, 6 and 12 months after operation. We surveyed the local rate, evaluate the easement of pain and observed the tumor. The local response rate of 19 cases with paravertebral mass was 19/19, 19/19, 18/19, 17/19 cases in turn. The probability of odynolysis 31 cases after 2, 4, 6 months therapy was 96.8% (30/31) , 96.8% (30/31) , 90.3% (28/31) , 71.0% (22/31) in turn. 9.68% of 31 cases that was happened significant ossification in the devastated vertebral body. 12 cases appeared skin pigmentation without myelodiastasis or cutaneous ulcer.

The method to treat the vertebral column metastasis tumor of embedding ¹²⁵I by CT guided was simple, reliable and safety.