| 摘要 |
PROBLEM TO BE SOLVED: To provide an X-ray computerized tomography (CT) scanner suppressing low-count artifacts. SOLUTION: The X-ray CT scanner is provided with an X-ray source for generating an X-ray, a detector 103 for detecting the X-ray generated from the X-ray source and transmitted through an object, a preprocessor 106 for producing projection data by applying, to an output signal from the detector 103, logarithm conversion processing on a function deviating from an ideal logarithm function, and a reconstruction part 114 for reconstructing the image based upon the projection data produced by the preprocessor 106. COPYRIGHT: (C)2004,JPO |
