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Design of pixellated scintillator on PIN-type photodiode for digital mammography
We tested the system resolution of the FOS-CsI (Tl) coupled to CMOS APS for mammography of 28 kV p. Through the results, this detector showed 14 cycle/mm at zero MTF. The reason it was showing lower resolution than was expected was analyzed using the characteristics of scintillator and sensor. The e...
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Published in: | Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2006-11, Vol.567 (1), p.364-367 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We tested the system resolution of the FOS-CsI (Tl) coupled to CMOS APS for mammography of 28
kV
p. Through the results, this detector showed 14
cycle/mm at zero MTF. The reason it was showing lower resolution than was expected was analyzed using the characteristics of scintillator and sensor. The estimation method of system resolution using the ratio of dark current and photocurrent was derived. The resolution of the candidate detectors and conceptual design of pixellated 2-D sensor array performance were investigated through this method. One of the candidate detectors showed desirable resolution of over 20
cycle/mm. |
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ISSN: | 0168-9002 1872-9576 |
DOI: | 10.1016/j.nima.2006.05.242 |