Purpose of this system simplifies to manage information on radiation therapy for a long term consistently, case report, and extraction of treatment results number. Electronic Medical Record system(EMR) was replaced from a past CPOE system in October, 2006. Patients\u27 case history and passage information are entered to EMR. This time, EMR and AMIDAS were made to cooperate and it achieved new function to store information of Patient, radiation/particle therapy treatment, and follow-up automatically from EMR to AMIDAS. Furthermore, report that we developed a new web-based aggregate analysis system to manage radiation/particle therapy data stored in AMIDAS. National Institute of Radiological Sciences (NIRS) is a hospital located in Chiba and a single radiation department which has 100 beds and 200 outpatients daily. The diagnosis specialized in the radiation/particle therapy. In 1961, radiation therapy by X rays was begun at NIRS. In addition, particle therapy(carbon ion) was begun in 1994, and about 5,600 examples were treated by March, 2010. NIRS is a research institute, so disease information on radiation therapy, content of treatment, and information on prognosis are important information for a clinical research. History of radiation/particle therapy database system (AMIDAS: Advanced Medical Information Database System) was constructed in 1999, and operation was begun in 2000.HL7 was used for communicate EMR and AMIDAS. The firefox web browser was used for AMIDAS user-interface. AMIDAS achieved following three functions. 1)Function to complement details for treatment information which is not inputted by EMR. 2) Function to support report writer of heavy particle therapy executed twice a year. 3) Function to display calculated survival rate image by doctors\u27 interested grouping method. Kaplan-Meier method is adopted for computational method of survival rate curve. Numerical result was displayed on a browser as an image, it enabled to use it for secondary use. In addition, the significant difference authorization function by grouping that user had freely specified was added. The user becomes unnecessary the dual input of data by making EMR and AMIDAS cooperate, and an efficiency improvement of work and the accuracy improvement of data were able to be achieved. Moreover, AMIDAS improved user\u27s convenience, flexibility and able to extract at high speed for the aggregate of treatment data, making patient list, and authorization between groups(analysis between classification of stages and TNM classification value) for user\u27s interested points and different disease sites.ESTRO2
