| 摘要 |
A penetrating radiation source (14) is disposed on one side of a object (10) which is on a object support (12). A flat panel radiation detector (18) is stationarily disposed on the opposite side of the object (10) than the source (14). A moving system (16, 50, 52) moves the source (14) with respect to the object (10). In each position (Xi, Yi, Zi) of the source (14) a center ray of the x-ray beam strikes the detector (18) at a corresponding location (xi, yi, 0). For each position (Xi, Yi, Zi) of the source (14), the image (xi, yi, 0) of an object located on a focal plane offsets by a vector displacement (Di) relative to a reference position (xo, yo, zo) of the image when the source is at (X0, Y0, Z0). A processor (28) shifts and interpolates each view by the different vector displacements corresponding to each of the focal planes (L1, L2, . . . ) and integrates the images to generate a series of slice image representations which are stored in a volume image memory (30). In this manner, by adjusting the view offset by an amount corresponding to each of the focal planes, (L1, L2, . . . ) the same data set is used to generate all of the slices of the resultant volume image.
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