System and method for reducing grid line image artifacts

摘要

An imaging system includes a detector configured to detect X-rays from an X-ray source. The detector includes multiple photodetector elements. The imaging system also includes an anti-scatter grid disposed over the detector, wherein the anti-scatter grid includes multiple radiation absorbing elements. At least a portion of one or more of the radiation absorbing elements of the multiple radiation absorbing elements is disposed on each photodetector element, and a total area of each respective portion of the one or more radiation absorbing elements disposed on each photodetector element is substantially equal.

主权项

1. An imaging system comprising:
a detector configured to detect X-rays from an X-ray source and comprising a plurality of photodetector elements; and an anti-scatter grid disposed over the detector, wherein the anti-scatter grid comprises a plurality of radiation absorbing elements, at least a portion of one or more of the radiation absorbing elements of the plurality of radiation absorbing elements is disposed on each photodetector element, a total area of each respective portion of the one or more radiation absorbing elements disposed on each photodetector element is substantially equal, and each of the radiation absorbing elements is equally spaced apart relative to each other, wherein each photodetector element comprises a photosensing area, and at least some of the photosensing areas of the photodetector elements have different regions covered by the respective portion of the one or more radiation absorbing elements.