X-ray fluorescence imaging with the Medipix2 single-photon counting detector
- NázevTitle
- X-ray fluorescence imaging with the Medipix2 single-photon counting detectorX-ray fluorescence imaging with the Medipix2 single-photon counting detector
- Druh výsledkuResult type
- Příspěvek ve sborníkuProceedings paper
- AutořiAuthors
- J. Uher, G. Harvey, J. Jakůbek
- Klíčová slovaKeywords
- Medipix2, X-ray fluorescence imaging, pixel detector, Charge sharing, detector response matrix, pixel readout chip
- KonferenceConference
- 2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, and 17th Room Temperature Semiconductor Detectors Workshop (Knoxville, United States, 2010-10-30)
- DOIDOI
- 10.1109/NSSMIC.2010.5873930
- Časopis / citaceJournal / citation
- In: IEEE Nuclear Science Symposuim & Medical Imaging Conference, IEEE, 2010, pp. 1067-1073 · ISSN 1095-7863
- RokYear
- 2010
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Spolupráce ČR s CERNCollaboration of the Czech Republic with CERN; Využití radionuklidů a ionizujícího zářeníApplication of radionuclides and ionising radiation
- CitovánoCited by
- 9 (OpenAlex)
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
Material-resolved X-ray imaging or colour X-ray imaging is of a great interest for many applications ranging from physics, industry to medicine and biology. X-ray fluorescence offers a method for producing such images if the energies and positions of origin of the fluorescent photons can be adequately resolved. This paper describes application of the Medipix2 single photon counting imaging detector (256×256 pixels each of 55×55 μm2 size) for this purpose. The basics of the method are explained including details of the energy calibration of all 65k individual pixels. The effect of charge sharing is discussed and a method for its characterisation based on numerical calculation presented. The charge sharing calculation is then used to generate the Medipix2 detector response matrix, which is subsequently used for analysis of measured spectra in detector pixels.
Material-resolved X-ray imaging or colour X-ray imaging is of a great interest for many applications ranging from physics, industry to medicine and biology. X-ray fluorescence offers a method for producing such images if the energies and positions of origin of the fluorescent photons can be adequately resolved. This paper describes application of the Medipix2 single photon counting imaging detector (256×256 pixels each of 55×55 μm2 size) for this purpose. The basics of the method are explained including details of the energy calibration of all 65k individual pixels. The effect of charge sharing is discussed and a method for its characterisation based on numerical calculation presented. The charge sharing calculation is then used to generate the Medipix2 detector response matrix, which is subsequently used for analysis of measured spectra in detector pixels.