PURPOSE: To easily and exactly generate an analysis model by anybody.

CONSTITUTION: This device is provided with a display processing ST1 to receive CT data expressing the tomographic image of an organism an to display these data, treatment simulating figure preparation processings (ST2-ST6) to specify the contours or attributes of respective organizations concerning the displayed tomographic image and to prepare a simulating figure in the state of treatment by additionally describing an applicator to the tomographic image, and analysis model generation processings (ST7-ST10) to automatically divide the treatment simulating figure while being designated the number of elements or the like, to specify an organization name or the the like for each divided area and to store the result for each area.