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Photon-counting CT: Scouting for Quantitative Imaging Biomarkers.
Radiology
January 2021
From the Department of Radiology and Imaging Sciences, Emory University, 1364 Clifton Rd NE, Atlanta, GA 30322.
Dynamic bowtie for fan-beam CT.
J Xray Sci Technol
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Engineering Research Center of Industrial Computed Tomography Nondestructive Testing, Key Lab of Optoelectronic Technology and System, Ministry of Education, Chongqing University, Chongqing, China School of Biomedical Engineering and Sciences, Virginia Tech, Blacksburg, VA, USA.
A bowtie is a filter used to shape an x-ray beam and equalize its flux reaching different detector channels. For development of spectral CT with energy discriminating photon-counting (EDPC) detectors, here we propose and evaluate a dynamic bowtie for performance optimization based on a patient model or a scout scan. With a mechanical rotation of a dynamic bowtie and an adaptive adjustment of an x-ray source flux, an x-ray beam intensity profile can be modulated.
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