MTF and DQE measurement in imaging detectors by their single-event response

被引:4
作者
Ottonello, P
Rottigni, GA
Sartori, C
Zanella, G
Zannoni, R
机构
[1] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy
[2] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
[3] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy
[4] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy
关键词
imaging detectors; X-ray CCD detectors; DQE; MTF;
D O I
10.1016/S0168-9002(98)00852-3
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
The single-event response of imaging detectors, averaged and normalised, can furnish the PSF and then the MTF of the detector. Moreover, the analysis of the single-event responses makes it possible to measure the fluctuation of the output signal intensity and to express the output noises in terms of quantum responses. Therefore, if the variances of the involved noises, the quantum efficiency QE and the average input signal are known, the DQE of the detector can be determined. Experimental results are shown using a CCD-based X-ray scintillation area detector in the 8-45 keV range. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:731 / 735
页数:5
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