LINAC-based spinal stereotactic radiosurgery

Stereotactic and Functional Neurosurgery
A J HamiltonL Gossett

Abstract

The authors' report on the use of a prototype spinal stereotactic radiosurgery frame which was employed for the treatment of 9 patients who presented with recurrent neoplastic involvement of the spinal column. All patients had failed standard therapy consisting of surgery, external fractionated radiation therapy, and/or chemotherapy. Eight of the lesions represented metastatic tumors in the vertebral column, one of the lesions was a primary osteosarcoma involving multiple vertebral bodies. The lesions were found at multiple levels, from the cervical through the sacral region. Six out of the 9 patients presented with epidural compression: 4 of the 9 patients with evidence of myelopathy: 2 of the 9 patients with radicular symptoms secondary to compression from the tumor, and 1 patient was free of any compressive symptoms. All patients had pain requiring narcotics. Patients were treated with a median radiosurgical dose of 800 cGy (range 800-1.000) with a median of 1 isocenter (range 1-7 isocenters) and median normalization of 80% to the isodose contour (range 80-160). Median dose delivered to the already prior irradiated spinal cord was 179 cGy (range 52-320 cGy) with a median spinal cord dose of 34 (range 4-68). To date, there ha...Continue Reading

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