| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for radiation imaging using a phase contrast method capable of performing imaging efficiently and enhancing the estimation accuracy in restoring phase. <P>SOLUTION: The method comprises the following steps: (a) a step for acquiring a first group of image signals using a radiation having a first wavelength by detecting the intensity of the radiation transmitted through an object at a plurality of surfaces located at different distances from the object sequentially in an increasing or a decreasing order of the distances from the object; (b) a step for acquiring a second group of image signals using a radiation having a second wavelength different from the first wavelength by detecting the intensity of the radiation transmitted through the object at the plurality of surfaces located at different distances from the object sequentially in the inverse order to that of step (a); a step for acquiring plurality of phase data by restoring the phase information of the radiation transmitted through the object on the basis of the first and the second image signals; and (d) a step for generating an image data on the basis of the plurality of phase data. <P>COPYRIGHT: (C)2004,JPO |
