Method and apparatus for large field of view imaging and detection and compensation of motion artifacts
A motion and motion map technology, which is applied in the directions of instruments, applications, and image enhancement for radiological diagnosis, and can solve problems such as inaccurate motion compensation effects.
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[0023] One aspect of the present invention relates generally to methods and apparatus for CT image acquisition, and more particularly to methods for providing a large field of view with improved image quality by utilizing at least two scanning procedures performed by a CT imaging apparatus (“ FOV") method and apparatus. At least one scan employs the radiation source and detector of the CT imaging device in a centered geometry, and at least one scan employs the detector and / or source in an offset geometry. The image data obtained from the at least two scanning procedures are then combined to generate a reconstructed image.
[0024] figure 1 An exemplary centering geometry 100 of a CT imaging apparatus is described. The exemplary centering geometry 100 has an X-ray source 102, such as an X-ray tube, and an X-ray sensitive detector 104, such as a flat panel area detector array extending in transverse and axial directions. Such as figure 1 As shown, the center of rotation 114 ...
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