| 摘要 |
PURPOSE:To reduce the memory capacity of data to enhance economical efficiency, by a method when the unidirectional count value distribution data stored and constituted in a memory circuit at every rotary angle is read out to perform image re-constitution treatment and the two-dimensional distribution image of the radiation incidence count value on a detection surface is reconstituted. CONSTITUTION:The rotations of a collimator 1 and a detector are controlled by an electronic calculator 7 and only the signal X among position signals X, Y obtained at every rotary angle is stored in the memory circuit 8 in the electronic calculator 7 along with an angle signal while being sending to said memory circuit 8. The memory circuit 8 is equipped with the memory region of an angle theta and the memory region corresponding to each of positions X1, X2, X3,... in the X-direction and both signals are successively stored to count the number of development times at every position. The X-direction unidimensional distribution data of this radiation incidence count value is stored along with the angle theta thereof. After the data are stored, these data are read out to be measured as projection data and operation treatment such as convolution or back- projection for re-constituting the two-dimensional image is performed from the projection data by the operation apparatus 9 in the electronic calculator 7 to regenerate the two-dimensional distribution image of the radiation incidence count value. |
