Patent ID: 7230262

Claim:
A radiation image recording and read-out system, comprising: i) image recording and read-out means for performing radiation image recording and read-out operations on an object, whose phase varies within a predetermined variation range, ii) storage means for storing reference image signals, which represent at least two reference images of different phases of the object, the at least two reference images of the different phases of the object having been acquired with the radiation image recording and read-out operations performed on the object, whose phase varies within the predetermined variation range, iii) successive image recording and read-out instructing means for giving an instruction to the image recording and read-out means such that the image recording and read-out means performs successive image recording and read-out operations on the object, whose phase is varying within the predetermined variation range, the successive image recording operations being performed by use of a low radiation dose and at predetermined time intervals, a plurality of successive recorded and read-out images being acquired from the successive image recording and read-out operations, iv) phase detecting means for detecting the phase of the object with respect to each of the successive recorded and read-out images, which have been acquired with the image recording and read-out means and in accordance with the instruction given by the successive image recording and read-out instructing means, the phase detection being made in accordance with the reference images of the different phases of the object, and v) ordinary image recording and read-out instructing means for giving an instruction to the image recording and read-out means at the time, at which the detected phase of the object having been detected by the phase detecting means coincides with a desired phase of the object, such that the image recording and read-out means performs ordinary image recording and read-out operations on the object, the ordinary image recording operation being performed by use of an ordinary radiation dose.