| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a computed tomography apparatus that realizes a tomogram having no artifacts in real time with a simple configuration.SOLUTION: A computed tomography apparatus includes: projection data collection means for sequentially collecting projection data of a subject while sandwiching the subject between an X-ray source and the apparatus and periodically changing a projection direction to the subject; partial image generation means for generating partial image data for each predetermined range set in advance by performing back projection to fan beam projection data collected by the projection data collection means; weighting means for performing discontinuous weighting by multiplying at least a plurality of pieces of data among the partial image data by coefficients different from each other; tomogram generation means for generating a tomogram of the subject on the basis of the plurality of pieces of partial image data including the partial image data weighted by the weighting means; and weighting change means for changing the coefficients of the weighting to the partial image data by the weighting means.</p> |
