22 March 2016 Dual-source multi-energy CT with triple or quadruple x-ray beams
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Abstract
Energy-resolved photon-counting CT (PCCT) is promising for material decomposition with multi-contrast agents. However, corrections for non-idealities of PCCT detectors are required, which are still active research areas. In addition, PCCT is associated with very high cost due to lack of mass production. In this work, we proposed an alternative approach to performing multi-energy CT, which was achieved by acquiring triple or quadruple x-ray beam measurements on a dual-source CT scanner. This strategy was based on a “Twin Beam” design on a single-source scanner for dual-energy CT. Examples of beam filters and spectra for triple and quadruple x-ray beam were provided. Computer simulation studies were performed to evaluate the accuracy of material decomposition for multi-contrast mixtures using both tri-beam and quadruple-beam configurations. The proposed strategy can be readily implemented on a dual-source scanner, which may allow material decomposition of multi-contrast agents to be performed on clinical CT scanners with energy-integrating detector.
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Lifeng Yu, Lifeng Yu, Zhoubo Li, Zhoubo Li, Shuai Leng, Shuai Leng, Cynthia H. McCollough, Cynthia H. McCollough, "Dual-source multi-energy CT with triple or quadruple x-ray beams", Proc. SPIE 9783, Medical Imaging 2016: Physics of Medical Imaging, 978312 (22 March 2016); doi: 10.1117/12.2217446; https://doi.org/10.1117/12.2217446
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