Image pickup medical x-ray survey instrument and method because of k edge

摘要

This invention regards the medical x-ray survey instrument and method in order to execute the k edge image pickup of interest object ones which include the material which shows k edge absorption. In order to make the use of the former detector technology which does not have the fact that it suffers from restriction in order to offer very high k rate ability possible, a certain method to be proposed, as for this method, polychromatic x-ray radiation 4; Step and the Bragg filter 14 which discharge 4a and 4b; Through 14a and 14b, in order for the radiation 16 which is transmitted to pass above-mentioned object ones 5, with above-mentioned Bragg filter after passing step and above-mentioned object ones 5 which above-mentioned polychromatic x-ray radiation Bragg filtering are done step and the above-mentioned Bragg filter 14 which detect x-ray radiation; It possesses with the step which acquires the projection data with the Bragg reflected angle where 14a and 14b two differs at least and the step which reconstructs the k edge picture from the projection data which it describes acquires.