To acquire a radiological image with high quality in which the influence of unevenness of light emission of a stimulating light beam is more exactly eliminated in a radiological image acquisition method and system.

A radiological image conversion panel 1 having a light emission marker for detecting a position for emitting a light beam capable of transmitting an exciting light cut filter is used in a part of the system itself, the stimulating light beam generated from the radiological image conversion panel 1 on receiving irradiation of an exciting light beam Le and a light beam generated from the light emission marker are received by a line sensor 33 through an image formation optical system 31 and image signals indicating the radiological image recorded in the radiological conversion panel 1 as a latent image and an image of the light emission marker are acquired. A position of the radiological image indicated by the image signals is corrected based on a position of the image of the light emission marker indicated by the image signals by an image data correction part 60 and an image signal indicating a radiological image in which the influence of the unevenness of light emission of the stimulating light beam is eliminated is acquired by using the image signal of which the position is corrected.