Examination of HgI 2 and PbI 2 photoconductive materials for direct detection, active matrix, flat-panel imagers for diagnostic x-ray imaging

Y. Kang, L. E. Antonuk, Y. El-Mohri, L. Hu, Y. Li, A. Sawant, Z. Su, Y. Wang, J. Yamamoto, Q. Zhao

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

In this paper, the results of initial empirical studies of the dark current and x-ray signal response of thick, polycrystalline films of lead iodide (PbI 2) and mercuric iodide (HgI 2) are reported. These studies are being carried out as part 1 of an extensive, integrated program of research to develop and incorporate such photoconductive, x-ray detection materials into direct detection, active matrix flat-panel imagers (AMFPIs) for applications in diagnostic imaging, as well as for radiotherapy imaging. Simple detector configurations incorporating these materials were prepared by physical vapor deposition (PVD) with thicknesses ranging from approximately 90 to 500 μm. In the present study, dark current, x-ray sensitivity and temporal response of the detectors were quantitatively evaluated under irradiation conditions relevant to radiography, fluoroscopy and mammography. Measurements were performed for externally applied bias voltages ranging from 0.1 to 2.0V/μm for both negative and positive polarities.

Original languageEnglish (US)
Title of host publicationIEEE Nuclear Science Symposium Conference Record
EditorsS.D. Metzler
Pages2119-2123
Number of pages5
Volume3
Publication statusPublished - 2003
Event2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference - Portland, OR, United States
Duration: Oct 19 2003Oct 25 2003

Other

Other2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference
CountryUnited States
CityPortland, OR
Period10/19/0310/25/03

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ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Industrial and Manufacturing Engineering

Cite this

Kang, Y., Antonuk, L. E., El-Mohri, Y., Hu, L., Li, Y., Sawant, A., ... Zhao, Q. (2003). Examination of HgI 2 and PbI 2 photoconductive materials for direct detection, active matrix, flat-panel imagers for diagnostic x-ray imaging In S. D. Metzler (Ed.), IEEE Nuclear Science Symposium Conference Record (Vol. 3, pp. 2119-2123). [M6-68]