Characterization of a hybrid energy-resolving photon-counting detector

Zang, Andrea; Pelzer, Georg; Anton, G.; Sune, Rafael Ballabriga; Bisello, F.; Campbell, M.; Fauler, A.; Fiederle, M.; Cudie, X. Llopart; Ritter, I.; Tennert, F.; Wolfel, S.; Wong, Winnie; Michel, Thilo

doi:10.1117/12.2043526

Cited by 2 publications

(2 citation statements)

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“…One important area of progress has been on the hardware side with improved sensors and fast, low-noise application-specific integrated circuits. 201,[205][206][207] A major challenge with photon counting is the high incident rate of x-rays, and the following pile-up of events and charge sharing between pixels. Several contributions helped both to evaluate the impact on image quality and to suggest correction algorithms or detector design strategies to mitigate the problems.…”

Section: Image Reconstructionmentioning

confidence: 99%

Science and practice of imaging physics through 50 years of SPIE Medical Imaging conferences

et al. 2022

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Purpose: For 50 years now, SPIE Medical Imaging (MI) conferences have been the premier forum for disseminating and sharing new ideas, technologies, and concepts on the physics of MI.Approach: Our overarching objective is to demonstrate and highlight the major trajectories of imaging physics and how they are informed by the community and science present and presented at SPIE MI conferences from its inception to now.Results: These contributions range from the development of image science, image quality metrology, and image reconstruction to digital x-ray detectors that have revolutionized MI modalities including radiography, mammography, fluoroscopy, tomosynthesis, and computed tomography (CT). Recent advances in detector technology such as photon-counting detectors continue to enable new capabilities in MI. Conclusion:As we celebrate the past 50 years, we are also excited about what the next 50 years of SPIE MI will bring to the physics of MI.

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Section: Image Reconstructionmentioning

confidence: 99%

Science and practice of imaging physics through 50 years of SPIE Medical Imaging conferences

et al. 2022

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“…To reduce analog pile-up in the detector, the tube current was set to 1 mA. This provided a detection rate of about 10 4 counts per second and pixel, where a sufficient count-rate linearity is given [24]. For generation of the x-ray images, we used the central region of the detector with 10 × 10 pixels, as the edges of the sensor suffer from increased noise.…”

Section: Methodsmentioning

confidence: 99%

Energy weighted x-ray dark-field imaging

Pelzer¹,

Zang²,

Anton³

et al. 2014

Opt. Express

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Abstract:The dark-field image obtained in grating-based x-ray phasecontrast imaging can provide information about the objects' microstructures on a scale smaller than the pixel size even with low geometric magnification.In this publication we demonstrate that the dark-field image quality can be enhanced with an energy-resolving pixel detector. Energy-resolved x-ray dark-field images were acquired with a 16-energy-channel photon-counting pixel detector with a 1 mm thick CdTe sensor in a Talbot-Lau x-ray interferometer. A method for contrast-noise-ratio (CNR) enhancement is proposed and validated experimentally. In measurements, a CNR improvement by a factor of 1.14 was obtained. This is equivalent to a possible radiation dose reduction of 23%. x-ray dark-field imaging using a grating interferometer," Nat. Mater. 7, 134-137 (2008). 5. A. Momose, T. Takeda, Y. Itai, and K. Hirano, "Phasecontrast xray computed tomography for observing biological soft tissues," Nat. Med. 2(4), 473-475 (1996). 6. F. Pfeiffer, T. Weitkamp, O. Bunk, and C. David, "Phase retrieval and differential phase-contrast imaging with low-brilliance x-ray sources," Nat. Phys. 2(4), 258-261 (2006). 7. T. Weitkamp, C. David, O. Bunk, J. Bruder, P. Cloetens, and F. Pfeiffer, "X-ray phase radiography and tomography of soft tissue using grating interferometry," Eur. J. Radiol. 68(3), 13-17 (2008

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Characterization of a hybrid energy-resolving photon-counting detector

Cited by 2 publications

References 6 publications

Science and practice of imaging physics through 50 years of SPIE Medical Imaging conferences

Science and practice of imaging physics through 50 years of SPIE Medical Imaging conferences

Energy weighted x-ray dark-field imaging

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