An improved method for energy calibration of photon counting X-ray detectors

Jeong Seok Lee; Ki Young Shin; Dong Goo Kang; Soo Yeol Lee; Seung Oh Jin; Insoo S. Kim; Mohamed A.A. Hegazy; Kisoo Kim

doi:10.1109/NSSMIC.2016.8069828

An improved method for energy calibration of photon counting X-ray detectors

Jeong Seok Lee
, Ki Young Shin
, Dong Goo Kang
, Soo Yeol Lee
, Seung Oh Jin
, Insoo S. Kim
, Mohamed A.A. Hegazy
, Kisoo Kim

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Photon counting X-ray detectors with energy discrimination capabilities can discriminate the energy of incident X-ray photon, thereby spectral imaging is possible with them. Energy calibration is a process to find a linear mapping function between the amplitudes of electric pulses and their corresponding photon energy. For practical and efficient energy calibration, the X-ray tube voltage can be used as a reference. However, as the exposure time increases, the threshold giving 50 % of OFF pixels also increases without converging to a point. To reduce calibration errors due to this non-convergent behavior, we present an improved method for energy calibration with applying it to two commercial photon counting X-ray detectors, i.e., a CdTe Medipix2 detector and a CdTe Pixirad2 detector with PFXIE-II read-out ASIC. With the improved mapping function estimated by the improved method, we can better identify the iodine component in a phantom consisting of iodine and other components.

Original language	English
Title of host publication	2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781509016426
DOIs	https://doi.org/10.1109/NSSMIC.2016.8069828
Publication status	Published - 16 Oct 2017
Event	2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016 - Strasbourg, France Duration: 29 Oct 2016 → 6 Nov 2016

Publication series

Name	2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
Volume	2017-January

Conference

Conference	2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016
Country/Territory	France
City	Strasbourg
Period	29/10/16 → 6/11/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Access to Document

10.1109/NSSMIC.2016.8069828

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Lee, J. S., Shin, K. Y., Kang, D. G., Lee, S. Y., Jin, S. O., Kim, I. S., Hegazy, M. A. A., & Kim, K. (2017). An improved method for energy calibration of photon counting X-ray detectors. In 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016 Article 8069828 (2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016; Vol. 2017-January). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2016.8069828

Lee, Jeong Seok ; Shin, Ki Young ; Kang, Dong Goo et al. / An improved method for energy calibration of photon counting X-ray detectors. 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016. Institute of Electrical and Electronics Engineers Inc., 2017. (2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016).

@inproceedings{b2a70c25b3874b87a6d2a0a08a865914,

title = "An improved method for energy calibration of photon counting X-ray detectors",

abstract = "Photon counting X-ray detectors with energy discrimination capabilities can discriminate the energy of incident X-ray photon, thereby spectral imaging is possible with them. Energy calibration is a process to find a linear mapping function between the amplitudes of electric pulses and their corresponding photon energy. For practical and efficient energy calibration, the X-ray tube voltage can be used as a reference. However, as the exposure time increases, the threshold giving 50 \% of OFF pixels also increases without converging to a point. To reduce calibration errors due to this non-convergent behavior, we present an improved method for energy calibration with applying it to two commercial photon counting X-ray detectors, i.e., a CdTe Medipix2 detector and a CdTe Pixirad2 detector with PFXIE-II read-out ASIC. With the improved mapping function estimated by the improved method, we can better identify the iodine component in a phantom consisting of iodine and other components.",

author = "Lee, \{Jeong Seok\} and Shin, \{Ki Young\} and Kang, \{Dong Goo\} and Lee, \{Soo Yeol\} and Jin, \{Seung Oh\} and Kim, \{Insoo S.\} and Hegazy, \{Mohamed A.A.\} and Kisoo Kim",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016 ; Conference date: 29-10-2016 Through 06-11-2016",

year = "2017",

month = oct,

day = "16",

doi = "10.1109/NSSMIC.2016.8069828",

language = "English",

series = "2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016",

address = "United States",

}

Lee, JS, Shin, KY, Kang, DG, Lee, SY, Jin, SO, Kim, IS, Hegazy, MAA & Kim, K 2017, An improved method for energy calibration of photon counting X-ray detectors. in 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016., 8069828, 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016, vol. 2017-January, Institute of Electrical and Electronics Engineers Inc., 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016, Strasbourg, France, 29/10/16. https://doi.org/10.1109/NSSMIC.2016.8069828

An improved method for energy calibration of photon counting X-ray detectors. / Lee, Jeong Seok; Shin, Ki Young; Kang, Dong Goo et al.
2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016. Institute of Electrical and Electronics Engineers Inc., 2017. 8069828 (2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016; Vol. 2017-January).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - An improved method for energy calibration of photon counting X-ray detectors

AU - Lee, Jeong Seok

AU - Shin, Ki Young

AU - Kang, Dong Goo

AU - Lee, Soo Yeol

AU - Jin, Seung Oh

AU - Kim, Insoo S.

AU - Hegazy, Mohamed A.A.

AU - Kim, Kisoo

PY - 2017/10/16

Y1 - 2017/10/16

N2 - Photon counting X-ray detectors with energy discrimination capabilities can discriminate the energy of incident X-ray photon, thereby spectral imaging is possible with them. Energy calibration is a process to find a linear mapping function between the amplitudes of electric pulses and their corresponding photon energy. For practical and efficient energy calibration, the X-ray tube voltage can be used as a reference. However, as the exposure time increases, the threshold giving 50 % of OFF pixels also increases without converging to a point. To reduce calibration errors due to this non-convergent behavior, we present an improved method for energy calibration with applying it to two commercial photon counting X-ray detectors, i.e., a CdTe Medipix2 detector and a CdTe Pixirad2 detector with PFXIE-II read-out ASIC. With the improved mapping function estimated by the improved method, we can better identify the iodine component in a phantom consisting of iodine and other components.

AB - Photon counting X-ray detectors with energy discrimination capabilities can discriminate the energy of incident X-ray photon, thereby spectral imaging is possible with them. Energy calibration is a process to find a linear mapping function between the amplitudes of electric pulses and their corresponding photon energy. For practical and efficient energy calibration, the X-ray tube voltage can be used as a reference. However, as the exposure time increases, the threshold giving 50 % of OFF pixels also increases without converging to a point. To reduce calibration errors due to this non-convergent behavior, we present an improved method for energy calibration with applying it to two commercial photon counting X-ray detectors, i.e., a CdTe Medipix2 detector and a CdTe Pixirad2 detector with PFXIE-II read-out ASIC. With the improved mapping function estimated by the improved method, we can better identify the iodine component in a phantom consisting of iodine and other components.

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DO - 10.1109/NSSMIC.2016.8069828

M3 - Conference contribution

AN - SCOPUS:85041743527

T3 - 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016

BT - 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016

Y2 - 29 October 2016 through 6 November 2016

ER -

Lee JS, Shin KY, Kang DG, Lee SY, Jin SO, Kim IS et al. An improved method for energy calibration of photon counting X-ray detectors. In 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016. Institute of Electrical and Electronics Engineers Inc. 2017. 8069828. (2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop, NSS/MIC/RTSD 2016). doi: 10.1109/NSSMIC.2016.8069828

An improved method for energy calibration of photon counting X-ray detectors

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