| 摘要 |
PURPOSE:To determine a sampling function for the optimum display by a method wherein an integrated value of a product of a sensitivity distribution of a detector is given as element to determine a first matrix and a rank of the second matrix which is determined with an integrated value of the product of a reverse matrix thereof, the sensitivity distribution and a sampling function of a pixel given as element is set so as not to be smaller than that of the first matrix. CONSTITUTION:A scanner unit 2-1 is made up of an X-ray tube device 2-1-1, a collimator 2-1-2, a detector 2-1-3 and a preamplifier 2-1-4. An integrated value of a product of a sensitivity distribution of the ith detector and that of the jth detector is given as element of the line (i) and the column (j) to determine a first matrix and the results are added to the product of the second matrix which is determined with the integrated value of the product of the reverse matrix of the first matrix, the sensitivity distribution of the jth detector and a sampling function of the ith pixel given as element of the line (i) and the column (j) and a one-dimensional matrix vector comprising an observation data as for the detector (j) to obtain the density of the ith pixel. Here, the sampling function is so set that the rank of the second matrix is not smaller than that of the first matrix. |
