| 摘要 |
The coordinates X and Y of the location of a scintillation crystal excited by nuclear radiation are determined as a function of the signals X+, X-, Y+, Y- produced conventionally by an electronic circuit associated with the scintillation crystal. The signals X+, X-, Y+ and Y- are digitized and the digital coordinate X (respectively Y) is obtained as the product of a first digital data item X+-X- (respectively Y+-Y-) and a second digital data item inversely proportional to the energy of the nuclear radiation received. To prevent beats in the value of the coordinates X and Y, which leads to a moire phenomenon in the radiation image, a random element is introduced into the calculation, for example by adding p random bits to the first digital data item.
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