Method for reconstructing a local high resolution x-ray ct image and apparatus for reconstructing a local high resolution x-ray ct image

The present invention relates to a X- ray CT image reconstruction method and an apparatus, to a method and apparatus for reconstructing a tomographic image having a high resolution X- ray into More specifically localized. Further, the device according to the present invention can also adjust the resolution of X- ray tomographic image is reconstructed according to change the distance between the object and the X- ray generator. Reconstruction method of the single-layer image including a high resolution X- ray CT image for local region of interest in accordance with an aspect of the present invention, the X-ray generator side part of the object, including the local region of interest belong to the irradiation range of the X-ray the step of the object to acquire the projection data of X-ray irradiation in the close position; In position, the entire object belonging to the irradiation range of the X-ray target object to the calculated virtual projection data that can be obtained on the assumption that the X-ray is irradiated to the entire object in the available location from the projection data, research on the x-ray step; The step of combining the projection data obtained at a position close to the virtual projection data and the X-ray source side of the entire target object other than the data in the local region of interest portion; Characterized in that it comprises the step of reconstructing the combined projection data. Unsaturated soil, characteristic curve, matric suction