| 摘要 |
PURPOSE: To scan with an equal timing interval in the case of an optional grade shape without causing any non-linear distortion by the method wherein the measured value of an equal interval is required in a K-space by means of an interpolation from a scanning value, and then the measured value is written into a measured matrix. CONSTITUTION: The requirement of an equal interval in a K-space needed for avoiding a non-linearity is achieved by the interpolation of a measured data. The interpolation is carried out on the K-space raster of the equal interval by directly, e.g. by a three dimensional approximation. In this case, the sin wave of a grade G(t) is presumed, thus the scanning of a measured value is performed by a constant time intervalΔt. According to this, initially the scanning of a non-equal interval is obtained in the K-space. If these scanning points are directly processed continuously, the non-linearity of an imaging should be caused. Accordingly, the interpolation raster of the equal interval is determined in the K-space, in this case, the measured value, which is further going to process is also an existing value in a measured raster, is interpolated in the interpolated raster. The measured value determined in the interpolated raster J is then written into a measured matrix.
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