Patent ID: 8238516

Claim:
A radiotherapy support apparatus comprising: a conversion unit which converts scattering radiation data to absorption dose volume data indicative of a distribution of absorbed radiation dose, the scattering radiation data being obtained by detecting a scattering radiation which occurs on the basis of a radiotherapeutic beam emitted to a subject; a calculation unit which calculates survival rate or fatality rate from the absorption dose volume data on the basis of information expressing relations between the absorption dose in a region and the survival rate or the fatality rate of normal cell so as to be associated with a plurality of segments, a comparison unit which compares between the survival rate and a value which is set at a time of planning or between the fatality rate and the value so as to be associated with a plurality of segments, and an evaluation unit which evaluates a result of the comparison of the comparison unit, and outputs a warning or stops operation of a treatment apparatus in accordance with the evaluation result.