CT system parameter calibration and imaging algorithm
A technology of system parameters and algorithms, applied in computing, image enhancement, image analysis, etc., can solve problems such as existing errors and affecting imaging quality, and achieve the effect of small error and high precision
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[0067] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and description of the present invention are used to explain the present invention, but are not intended to limit the present invention.
[0068] In order to better explain the algorithm of the present invention, a typical two-dimensional CT system is introduced. In this system, the parallel incident X-rays are perpendicular to the plane of the detector, and each detector unit is regarded as a receiving point and arranged at equal distances. The relative position of the X-ray transmitter and detector is fixed, and the entire transmitting-receiving system rotates 180 times counterclockwise around a fixed center of rotation. For each X-ray direction, measure the ray energy absorbed and attenuated by a fixed two-dimensional medium to be detected on a detector with 512 equidistant units, and after processing such as gain, 180 groups of received informati...
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