Low-dose CT image reconstruction method
A CT image, low-dose technology, applied in the field of medical CT imaging, can solve problems such as affecting clinical diagnosis and inability to reconstruct, and achieve the effect of avoiding the problem of reconstructed image artifacts and reducing radiation dose.
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[0035] Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. According to these detailed descriptions, those skilled in the art can clearly understand the present application and can implement the present application. Without departing from the principle of the present application, the features in different embodiments can be combined to obtain new implementations, or some features in certain embodiments can be replaced to obtain other preferred implementations.
[0036] K-nearest neighbor principle:
[0037] In order to judge the category of an unknown instance, all known instances of the category are used as references.
[0038] Choose parameter K. (For an unknown instance, we need to select a known instance similar to it to judge the result of the target attribute (objective function) of the unknown instance. In the fourth step, the number of instances closest to the unknown instance is selecte...
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