| 摘要 |
PROBLEM TO BE SOLVED: To provide a radioactive imaging device capable of improving a frame frequency by reducing a refresh time and a standby time after refreshing, and a control method thereof. SOLUTION: When image data are inputted into an image processor (step S1), the image processor generates a summed image sum (step S2). Next, the image processor extracts a maximum output max from the summed image sum (step S3). Subsequently, the maximum output max is compared with a previously set threshold (step S4). In this case, the threshold is set at a value of 80% of a saturation quantity, and where the saturation quantity is 3 V, the threshold is 2.4 V. If the maximum value max is smaller than the threshold, photographing is continued. On the contrary, if the maximum value max is equal to or more than the threshold, the summed image sum is cleared and set at zero (step S5), and then, and a refresh operation is performed. COPYRIGHT: (C)2005,JPO&NCIPI
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