RESTORING CT SCAN DATA

摘要

A method for restoring CT scan data is disclosed. The method may comprise: building a data collecting model with respect to a specific direction of a detector based a response curve of the detector. In some examples, the specific direction can indicate a channel direction and a slice direction of the detector. During a CT scanning, based on the data collecting model, X-ray intensity values detected by the detectors in the specific direction can be acquired. A function can be determined such that it satisfies the data collecting model, a continuity condition and a boundary condition, An X-ray intensity value can be obtained by substituting the coordinate value of a point in the specific direction into the function.

主权项

1. A method for restoring CT scan data, the method comprises:
building a data collecting model with respect to a specific direction of a detector based on a response curve of the detector, wherein the specific direction indicates a channel direction and/or a slice direction of the detector; acquiring, based on the data collecting model, X-ray intensity values detected by the detector in the specific direction during a CT scanning; determining a function which satisfies the data collecting model with respect to a relationship of an real X-ray intensity value in the specific direction, a continuity condition and a boundary condition; and calculating an X-ray intensity value of a point in the specific direction by substituting the coordinate value of the point into the function.