量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
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Purposes: To report on the design and implementation of a database system that provides access to the radiotherapy (RT) data for the purpose of data analysis in a clinical trial of carbon ion radiotherapy at National Institute of Radiological Sciences.
Methods and Materials: The data stored in this system are the patient treatment planning and record data including non-volumetric data of character and numerical type (1), and 2D or 3D volumetric data sets of CT images, target and organ contours, apertures and range compensators, dose distributions and simulation radiographs (2). Two subsystems were prepared for respective data type. One is a therapy information database that stores non-volumetric data (1), which can be accessed with client applications working on personal computers (PCs). Another is a DICOM RT archive that stores volumetric data sets (2) as DICOM RT data objects. The archive allows on-line data access with a developed application, RT viewer that works on PCs. Queried data sets can be displayed and downloaded as DICOM files or AAPM/RTOG Data Exchange format files. All the data sets are loaded into the system on-line daily at specified time.
Results: The system has operated for over two years and during this period we repaired and improved the applications. Presently it operates stably and it has been loaded with the data sets of more than 2000 patients treated since 1994. User applications are described with some examples.
Conclusion: The system enables users to analyze the therapy data for evaluation of treatment results. It provides volumetric data in portable format for further image-based analyses.
雑誌名
Journal of the Japanese Society for Therapeutic Radiology and Oncology
DESIGN AND IMPLEMENTATION OF A RADIOTHERAPY DATABASE IN CARBON ION THERAPY
