Patent ID: 9645254
Date: 2017-05-09
CPC Classifications: G01T

Claim:
1. A dose distribution measuring device comprising: a radiation detecting unit and; a radiation varying unit arranged between the radiation detecting unit and a region to be measured, the radiation varying unit varying the strength of radiation from the region to be measured, wherein a dose at a location of the radiation detecting unit is measured by the radiation detecting unit, in a state in which a direction of a radiation, of which a dose is to be varied by the radiation varying unit and measured, is predetermined and, a dose angular distribution of a radiation emitted from the region to be measured toward the radiation detecting unit is measured, by way in which the direction or an angle, where the radiation arrives to the radiation detecting unit from the region to be measured, is identified and a dose of the radiation before being varied by the radiation varying unit is calculated as a difference from a dose measured by the radiation detecting unit in the case where the radiation varying unit is not arranged.