| 摘要 |
PURPOSE:To obtain a digital picture of high quality with use of a nuclear medical picture of thin data density by adding the artificial data around the position information of fine picture elements for digitization in a process to obtain an analog picture. CONSTITUTION:A gamma camera 10 detects the gamma rays and produces the X and Y signals at an analog signal. The data are increased by a fixed pattern distribution generator 20 for the gamma distribution, etc. The distribution data are given to the picture elements in a lattice from the peripheral picture elements. It is considered that each picture element has its distribution. A picture element having having its inside spread from its center does not affect other picture elements but has probably the spread at a position shifted from the center in many cases. Under such conditions, the weight data equivalent to the data quantity corresponding to the apex of the spread is also given to each peripheral picture element. Then the weight data is added to a digital picture 30 after the A/D conversion. Thus even the minute data can be utilized with addition and a picture of high quality is obtained. |
