NDLI: K-edge imaging with a photon counting CT system

Content Provider	IEEE Xplore Digital Library
Author	Matsumoto, M. Kaibuki, F. Ogawa, K.
Copyright Year	2013
Description	Author affiliation: Grad. Sch. of Eng., Hosei Univ., Tokyo, Japan (Matsumoto, M.; Kaibuki, F.; Ogawa, K.)
Abstract	The purpose of our research is to measure the amount of contrast agents used in x-ray CT accurately. The use of contrast agents such as gold nano-particles enables molecular imaging with the x-ray CT system. To realize an energy discriminating measurement, we have developed a photon counting detector with a CdTe semiconductor that is able to measure x-rays with the count rate of $10^{7}$ $cps/mm^{2}$ with four energy windows. In order to measure the concentration ratio of the contrast agent, we used a k-edge imaging technique. The materials used in this experiment were Au-colloid, Pt-colloid and gadolinium solution. The results of experiments showed linearity between the linear attenuation coefficients of k-edge images that were calculated using the two energy bins near each k-edge, and the concentration ratios of the contrast agents. For Au-colloid, the measurement error was less than 4 %, while for the gadolinium agent, the accuracy depended on the window width. This was caused by the electrical noise in the lower energy window and the beam-hardening effect in the measured data.
Starting Page	1
Ending Page	3
File Size	834008
Page Count	3
File Format	PDF
e-ISBN	9781479905348
DOI	10.1109/NSSMIC.2013.6829299
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-10-27
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Detectors Attenuation Photonics Image reconstruction Semiconductor device measurement Energy measurement Materials
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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