Research methods
tumor, isodose
TUMOR
The injection doses of bone cement and I ions, as well as the needle insertion coordinates and depth indications of the applicator, were calculated using the treatment planning system (TPS) software. Specifically, routine preoperative examinations included routine blood tests, blood type, coagulation, blood sugar, liver and kidney function, electrocardiogram, chest radiography, anterior and lateral radiographs of the diseased vertebra, computed tomography (CT), magnetic resonance imaging (MRI), and whole-body bone scans. If conditions permit, a positron emission tomography-computed tomography (PET-CT) examination was performed. Before surgery, CT/MRI images of each patient were scanned into the TPS software for three-dimensional digital image reconstruction. Three-dimensional icons, isodose curves, and absorbed dose indications were accurately formulated and drawn based on the size, location, and relationship with the surrounding normal tissues of the lesion. At the same time, the initial dose of the radiation source required for clinical use, needle insertion coordinates, and depth indications of the applicator are determined, and the treatment plan table is printed out.The treatment plan was determined based on the tumor source, lesion segment, spinal stability, and degree of intraspinal compression after discussion in the department, and an individualized comprehensive treatment plan was determined. The patients and their families were informed of the treatment plan, and informed consent was obtained from all patients.