RADIATION FIELD MODELING AND COMPUTERIZED TREATMENT PLANNING

近年来，医学成像和定位技术的巨大进步给物理学和计算机技术带来了挑战，以扩展计算机化治疗计划和优化的能力。当前版本正在Macintosh和Windows NT平台上进行临床使用验证。一旦确认完成，Windows NT版本将成为标准临床平台，Macintosh平台将停止使用。NT版本基于OpenGL图形引擎，它提供了卓越的上级3D图像显示和操作。提出了一种新的交互式图像融合算法。虽然这目前用于CT和MRI图像，但可以融合任何图像集。已实现RTOG格式的文件/图像导入和导出，以便与劳伦斯利弗莫尔国家实验室进行通信。DICOM-RT格式的输入和输出将在FY-2000实施，以便与CIT一起与放射成像工作站项目进行通信。与LLNL的通信允许使用其PEREGRINE Monte Carlo剂量计算引擎进行临床研究项目。该引擎还将用于验证NIH-TPS的光子剂量计算方法。还计划将TPS用于立体定向放射外科手术/放射治疗（SRS/SRT）以及强度调制放射治疗（IMRT）。用于近距离放射治疗的单独程序，使用AAPM TG-43形式进行计算。对角度和径向剂量函数进行了修改，以允许血管内近距离放射治疗的治疗计划。研究将继续进行，可能会有商业赞助。

The vast improvements of the medical imaging and localization technology over recent years has brought a challenge to physics and computer technology to extend the capabilities of computerized treatment planning and optimization. The current release is being validated for clinical use on both Macintosh and Windows NT platforms. Once validation is complete, the Windows NT version will become the standard clinical platform and the Macintosh platform will be discontinued. The NT version is based on the OpenGL graphics engine, which provides superior 3D image display and manipulation. A new interactive algorithm has been developed for image fusion. Although this is currently used with CT and MRI images, any image set can be fused. File/image import and export in RTOG format has been implemented for communication with Lawerence Livermore National Laboratory. Import and ecport in DICOM-RT format will be implemented in FY-2000 for communication with the Radiological Imaging Workstation Project in conjunction with CIT. Communication with LLNL permits a clinical research project using their PEREGRINE Monte Carlo dose calculation engine. This engine will also be used to validate the photon dose calculation methodology of the NIH-TPS. Also planned is the use of the TPS for stereotactic radiosurgery/radiotherapy (SRS/SRT) as well as Intensity Modullated Radiotherapy (IMRT). A separate program for brachytherapy which performs calculations using the AAPM TG-43 formalism. Modifications to the angular and radial dose functions have been made to permit treatment planning for intravascular brachytherapy. Research will continue, with possible commercial co-sponsorship.