Geometry correction method of X-ray computed tomography imaging system
A technology of tomographic imaging and geometric correction, which is applied in the direction of material analysis using radiation, material analysis using wave/particle radiation, and measurement devices, which can solve problems affecting imaging effects, reduce image artifacts, and improve spatial resolution. Effect
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[0023] Various details involved in the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be pointed out that the described embodiments are only intended to facilitate the understanding of the present invention, rather than limiting it in any way.
[0024] Although the embodiment is carried out under the miniature cone beam CT system, the situation is similar and applicable to the common cone beam CT system and the fan beam CT system. When using the present invention, as long as it is ensured that the diameter of the thin wire of the used wire phantom body 5 is far less than the spatial resolution (less than one-third of the spatial resolution) that the CT system can achieve, the density of the thin wire is far greater than its surrounding materials Density, the slice pixel size of CT reconstruction should be smaller than the spatial resolution that the CT system can achieve. For the used X-ra...
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