CLINICAL RADIATION PHYSICS SERVICE

“该科继续提供专家体格检查 以及对放射治疗的技术支持，包括 日常校准、质量保证和一线维护 所有辐射生产和辅助设备。它包括特价商品 剂量学研究，计算机辅助治疗计划，患者 监控与特种设备的设计与开发 为发展临床需求量身定做。二极管现在成了家常便饭 用于验证患者剂量的临床应用和展示 准确度为+/-3%。6 MV加速器已经安装完毕。这个 放射外科系统已经安装并投入使用。我们有 到目前为止，成功治疗了6例立体定向放射外科患者。这个 与海军研究实验室合作的项目 半导体掺杂Vycor的临床应用评价良好 正在进行中。我们正在研究剂量学特征 属性，并用它来改进探测器的开发。临床 试验预计将于1999年初夏开始。正在进行中 这些项目是一种精细的立体定向治疗的委托 能够治疗更复杂的肿瘤体积的规划系统， 小型多叶准直器的安装调试， 调强放射治疗的进展 (调强放射治疗)在以下地点建立调强放射治疗研究计划 NCI与无框架立体定向定位的发展 系统。“

"The section continues to provide expert physical and technological support for radiation treatment, consisting of routine calibration, quality assurance and first-line maintenance of all radiation producing and ancillary equipment. It includes special dosimetry studies, computer- assisted treatment planning, patient monitoring and the design and development of special equipment tailored to developing clinical needs. Diodes are now in routine clinical use for the verification of patient doses and exhibit an accuract of +/- 3%. The 6 MV accelerator has been installed. The radiosurgery system has been installed and commissioned. We have successfully treated 6 stereotactic radiosurgery patients so far. The project in collaboration with the Naval Research Laboratory to evaluate the clinical utility of semiconductor doped Vycor is well under way. We are in the process of characterizing dosimetric properties and using this to refine detector development. Clinical trials are expected to start by early Summer, 1999. Ongoing projects are the commisioning of a refined stereotactic treatment planning system capable of treating more complex tumor volumes, the installation and commissioning of the mini-multileaf collimator, and the edevelopment of intensity modulated radiation therapy (IMRT) with the establishment of an IMRT research program at NCI and the development of a frameless stereotactic localization system."