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A CMOS APS for dent...
A CMOS APS for dental X-ray imaging using scintillating sensors
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- Abdalla, Munir A (author)
- Mittuniversitetet,Institutionen för informationsteknologi och medier (-2013)
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- Fröjdh, Christer, 1952- (author)
- Mittuniversitetet,Institutionen för informationsteknologi och medier (-2013),christer.frojdh@miun.se
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- Petersson, C. Sture (author)
- Mittuniversitetet,KTH,Mikroelektronik och informationsteknik, IMIT,Institutionen för informationsteknologi och medier (-2013)
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(creator_code:org_t)
- 2001
- 2001
- English.
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In: Nuclear Instruments and Methods in Physics Research Section A. - 0168-9002 .- 1872-9576. ; 460:1, s. 197-203
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Abstract
Subject headings
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- In this paper we present an integrating CMOS Active Pixel Sensor (APS) circuit to be used with scintillator type X-ray sensors for intra oral dental X-ray imaging systems. Different pixel architectures were constructed to explore their performance characteristics and to study the feasibility of the development of such systems using the CMOS technology. A prototype 64 x 80 pixel array has been implemented in a CMOS 0.8 mum double poly n-well process with a pixel pitch of 50 mum. A spectral sensitivity measurement for the different pixels topologies, as well as measured X-ray direct absorption in the different APSs are presented. A measurement of the output signal showed a good linearity over a wide dynamic range. This chip showed that the very low sensitivity of the CMOS APSs to direct X-ray exposure adds a great advantage to the various CMOS advantages over CCD-based imaging systems,
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- X-ray imaging
- pixel detectors
- readout electronics
- CMOS APS
- radiation imaging
- photosensor
- integrating pixel
- Electrical engineering, electronics and photonics
Publication and Content Type
- ref (subject category)
- art (subject category)
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