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Proceedings Paper

Performance of a small-field digital detector for soft x-ray imaging
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Paper Abstract

X-ray imaging detectors capable of very high resolution for a small field of view are important for x-ray micro-tomography, small specimen radiography, and certain x-ray scattering experiments. We have investigated the performance of small field detectors using scintillation phosphors coupled to a scientific CCD detector. The specific detector designs considered had fields of 8-12 mm that were used to record x-ray energies of 8-20 keV. The purpose of this work is to report the resolution (MTF) of designs that employed different optical coupling methods and different scintillation phosphor materials. For one detector system with a thin Gd2O2S phosphor a resolution of 48 lp/mm (presampled MTF = 0.10) was measured with pixels of 10.54 microns (Nyquist = 47.44) and a field of view of 12.14 mm x 13.09 mm.

Paper Details

Date Published: 28 June 2001
PDF: 6 pages
Proc. SPIE 4320, Medical Imaging 2001: Physics of Medical Imaging, (28 June 2001); doi: 10.1117/12.430947
Show Author Affiliations
Allen Seifert, Univ. of Michigan and Henry Ford Health System (United States)
Michael J. Flynn, Univ. of Michigan and Henry Ford Health System (United States)
Manjul Shah, Roper Scientific (United States)
Vivek V. Nagarkar, Radiation Monitoring Devices, Inc. (United States)

Published in SPIE Proceedings Vol. 4320:
Medical Imaging 2001: Physics of Medical Imaging
Larry E. Antonuk; Martin Joel Yaffe, Editor(s)

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