Patent ID: 7127028

Claim:
A radiation image taking system comprising: a tomosynthetic image taking means which takes an x-ray image of an object in each of a plurality of positions of an x-ray source to obtain a desired tomogram of the object by adding up the x-ray images thus obtained; a heartbeat phase detecting means which detects the heartbeat phase of the object; and a tomosynthesis control means which controls the tomosynthetic image taking means to take an x-ray image of the object in each of the plurality of positions of the x-ray source when the heartbeat of the object detected by the heartbeat phase detecting means is in the same heartbeat phase, wherein: the tomosynthetic image taking means is provided with a scattering radiation removing grid and a grid moving means which moves the scattering radiation removing grid, and the tomosynthesis control means controls the grid moving means so that the moving speed of the scattering radiation removing grid is maximized throughout a time in which the x-ray image of the object is taken.