Radiation tomography apparatus
Radiation tomography apparatus
Keywords: Tomography, x-ray
Applicant: Yokogawa Medical Syst. (JP)Patent number: EP0985379Publication date: 15 March 2000Title: Radiation tomography method and apparatus
It is an object of the present invention to implement a radiation tomography method and apparatus which can image at a time a plurality of tomographic images which differ in slice thickness. The invention provides a method comprising the steps of: with a projection image of a subject projected by a radiation beam having an extent and a thickness divided into divided projection images in the thickness direction of the radiation beam, measuring their respective projection data in a plurality of view directions; and producing tomographic images respectively based on the projection data for each of the divided projection images and the projection data for all of the divided projection images. The division is preferably unequal in that a plurality of tomographic images having a significant difference in slice thickness can be obtained. Moreover, the radiation is preferably x-rays in that practical means for generation, control etc. of x-rays are most widely available.
