A Modular Detection Module for Time-of-Flight Computed Tomography
Abstract
Integrating time-of-flight measurements in computed tomography has the potential to increase image quality and reduce the X-ray dose but poses several technological challenges. The past design of time-of-flight computed tomography systems focused on adding the time measurement but could not reach performances comparable to conventional computed tomography regarding spatial resolution and acquisition time. Thus, a new detection module aimed at proving the clinical viability of time-of-flight computed tomography is proposed here. This novel architecture offers sufficient modularity to explore multiple technological avenues regarding the timing resolution of X-ray detection. A tileable detection module comprised of 64 1 × 1 mm2 pixels, used with a pulsed X-ray source, shows the possibility of single-pixel count rates reaching 500 kcps. A synchronization resolution of 30 ps FWHM is obtained between the X-ray source and detectors, thus allowing for a theoretical system timing resolution below 300 ps FWHM, sufficient to obtain significant gains regarding image quality.
Authors 11
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Affiliation as printed
Université de Sherbrooke,Departement of Electrical and Computer Engineering,Shebrooke,Québec,Canada
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Affiliation as printed
Université de Sherbrooke,Departement of Electrical and Computer Engineering,Shebrooke,Québec,Canada
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Affiliation as printed
Université de Sherbrooke,Departement of Electrical and Computer Engineering,Shebrooke,Québec,Canada
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Affiliation as printed
Université de Sherbrooke,Departement of Electrical and Computer Engineering,Shebrooke,Québec,Canada
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Affiliation as printed
Université de Sherbrooke,Departement of Electrical and Computer Engineering,Shebrooke,Québec,Canada
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Affiliation as printed
Université de Sherbrooke,Departement of Electrical and Computer Engineering,Shebrooke,Québec,Canada
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Affiliation as printed
RWTH Aachen University,Physics of Molecular Imaging Systems,Aachen,North Rhine-Westphalia,Germany
Physics of Molecular Imaging Systems, RWTH Aachen University, Aachen, North Rhine-Westphalia, Germany
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Affiliation as printed
Université de Sherbrooke,Departement of Electrical and Computer Engineering,Shebrooke,Québec,Canada
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Affiliation as printed
Université de Sherbrooke,Departement of Electrical and Computer Engineering,Shebrooke,Québec,Canada
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Affiliation as printed
Université de Sherbrooke,Departement of Electrical and Computer Engineering,Shebrooke,Québec,Canada
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Affiliation as printed
Université de Sherbrooke,Departement of Electrical and Computer Engineering,Shebrooke,Québec,Canada
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