| 摘要 |
Frame image data sets obtained in sequence by computer tomographic (CT) imaging, and a difference value between pixel values of corresponding pixels in two consecutive frames included in the frame image data sets. Then, the difference value is compared with a threshold value. If the difference value is smaller than the threshold value, the CT imaging is continued, whereas if the difference value is greater, it is determined re-imaging is required. Then, operation is completed. If it is determined that CT imaging is to be continued, it is determined whether or not all projected images scheduled to be obtained are obtained. If not, the subsequent frame is obtained, and the step of computing the difference value and the subsequent steps are repeated. It is determined that all projected images to be obtained are obtained, a CT image is reconstructed from the frame image data sets. Then, the operation is completed.
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