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 language | English (US) |
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Title of host publication | IEEE Nuclear Science Symposium Conference Record |
Editors | S.D. Metzler |
Pages | 2119-2123 |
Number of pages | 5 |
Volume | 3 |
State | Published - 2003 |
Event | 2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference - Portland, OR, United States Duration: Oct 19 2003 → Oct 25 2003 |
Other
Other | 2003 IEEE Nuclear Science Symposium Conference Record - Nuclear Science Symposium, Medical Imaging Conference |
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Country/Territory | United States |
City | Portland, OR |
Period | 10/19/03 → 10/25/03 |
ASJC Scopus subject areas
- Computer Vision and Pattern Recognition
- Industrial and Manufacturing Engineering