头伽的效果与起源（The effect and origin of head and gamma）.doc

头伽的效果与起源（The effect and origin of head and gamma） Objective to investigate the localization of head and neck tumors with body gamma knife. Head positioning application development based on OUR-QGD gamma knife positioning system and its components, CT scanning in our hospital 153 cases of patients with head and neck cancer. 3 months after gamma knife treatment, the improvement of clinical symptoms and follow-up of CT or PET-CT showed that the total effective rate was 88.9%. Capable of precise positioning and precise positioning head of head and neck cancer therapy for body gamma knife treatment, which greatly improves the accuracy of gamma knife treatment for head and neck cancer. Stereotactic gamma ray body therapy system, referred to as body gamma knife, is an accurate radiation therapy equipment integrating modern computer technology, stereotactic technology and modern nuclear physics technology. [1]. Most of the head and neck tumors are mainly malignant tumors, including oral and maxillofacial tumors, ENT tumors, all kinds of benign and malignant tumors in the neck and intracranial basal tumors. Due to the limitation of the particularity and the gamma knife positioning system of head and neck position, stereotactic precision radiotherapy plays an increasingly important role in the treatment of head and neck cancer, and the positioning method is the key to ensure the quality of treatment. Our department in OUR-QGD whole body gamma knife based stereotactic system, according to the specific structure and size of the positioning bed made of 1 sets of pressure head positioning and supporting components, 2 kinds of integrated positioning system, greatly improves the positioning accuracy and treatment, provide quality assurance for head and neck cancer body gamma knife treatment. 1 materials and methods 1.1 general information From August 2010 to July 2011, our department based on gamma knife positioning system, positioning head for 153 patients with head and neck tumor