Methods and systems for correcting table deflection

摘要

Various methods and systems are provided for estimating and compensating for table deflection in reconstructed images. In one embodiment, a method for computed tomography (CT) imaging comprises reconstructing images from data acquired during a helical CT scan where table deflection parameters are estimated and the reconstruction is adjusted based on the table deflection parameters. In this way, images may be reconstructed without artifacts caused by table deflection.

主权项

1. A method for computed tomography (CT) imaging, comprising:
acquiring projection data during a helical CT scan of a subject; reconstructing at least two images by applying an image reconstruction algorithm to the projection data; estimating table deflection parameters based on the at least two image reconstructions; and reconstructing an image by applying the image reconstruction algorithm to the projection data, wherein the image reconstruction algorithm is modified based on the table deflection parameters to compensate for table deflection.