eprintid: 1409756
rev_number: 39
eprint_status: archive
userid: 608
dir: disk0/01/40/97/56
datestamp: 2013-10-14 10:43:16
lastmod: 2021-09-19 23:56:59
status_changed: 2013-10-14 10:43:16
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Konstantinidis, AC
creators_name: Szafraniec, MB
creators_name: Rigon, L
creators_name: Tromba, G
creators_name: Dreossi, D
creators_name: Sodini, N
creators_name: Liaparinos, PF
creators_name: Naday, S
creators_name: Gunn, S
creators_name: McArthur, A
creators_name: Speller, RD
creators_name: Olivo, A
title: X-ray Performance Evaluation of the Dexela CMOS APS X-ray Detector Using Monochromatic Synchrotron Radiation in the Mammographic Energy Range
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F42
keywords: Complementary metal-oxide-semiconductor (CMOS), digital mammography, image quality, synchrotron radiation
note: © 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
abstract: Digital detectors based on complementary metaloxide-semiconductors (CMOS) active pixel sensor (APS) technology have been introduced recently in many scientific applications. This work is focused on the X-ray performance evaluation of a novel CMOS APS detector in low energy medical imaging applications using monochromatic synchrotron radiation (i.e., 17–35 keV), which also allows studying how the performance varies with energy. The CMOS sensor was coupled to a Thallium-activated structured cesium iodide (CsI:Tl) scintillator and the detector’s X-ray performance evaluation was carried out in terms of sensitivity, presampling modulation transfer function (pMTF), normalized noise power spectrum (NNPS) and the resulting detective quantum efficiency (DQE). A Monte Carlo simulation was used to validate the experimentally measured low frequency DQE. Finally, the effect of iodine’s secondary generated K-fluorescence X-rays on pMTF and DQE results was evaluated. Good agreement (within 5%) was observed between the Monte Carlo and experimentally measured low frequency DQE results. A CMOS APS detector was characterized for the first time over a wide range of low energies covering the mammographic spectra. The detector’s performance is limited mainly by the detectability of the scintillator. Finally, we show that the current data could be used to calculate the detector’s pMTF, NNPS and DQE for any mammographic spectral shape within the investigated energies.
date: 2013-10
publisher: IEEE
official_url: http://dx.doi.org/10.1109/TNS.2013.2276123
vfaculties: VENG
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
article_type_text: Article
verified: verified_manual
elements_source: Manually entered
elements_id: 909524
doi: 10.1109/TNS.2013.2276123
lyricists_name: Olivo, Alessandro
lyricists_name: Speller, Robert
lyricists_id: AOLIV86
lyricists_id: RDSPE08
full_text_status: public
publication: IEEE Transactions on Nuclear Science
volume: 60
number: 5
place_of_pub: US
pagerange: 3969 - 3980
pages: 12
event_location: US
issn: 0018-9499
citation:        Konstantinidis, AC;    Szafraniec, MB;    Rigon, L;    Tromba, G;    Dreossi, D;    Sodini, N;    Liaparinos, PF;                     ... Olivo, A; + view all <#>        Konstantinidis, AC;  Szafraniec, MB;  Rigon, L;  Tromba, G;  Dreossi, D;  Sodini, N;  Liaparinos, PF;  Naday, S;  Gunn, S;  McArthur, A;  Speller, RD;  Olivo, A;   - view fewer <#>    (2013)    X-ray Performance Evaluation of the Dexela CMOS APS X-ray Detector Using Monochromatic Synchrotron Radiation in the Mammographic Energy Range.                   IEEE Transactions on Nuclear Science , 60  (5)   3969 - 3980.    10.1109/TNS.2013.2276123 <https://doi.org/10.1109/TNS.2013.2276123>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/1409756/1/Konstantinidis_IEEE_TNS_Preprint.pdf