Theoretical analysis of hybrid flat-panel detector arrays for digital X-ray fluoroscopy: General system architecture, signal, and noise processes

Sankararaman Suryanarayanan, Andrew Karellas, Srinivasan Vedantham

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Semiconductor flat-panel detector arrays are being investigated for applications in digital x-ray medical imaging. This paper describes the system architecture and theoretical signal and noise processes of a proposed hybrid cadmium zinc telluride (CZT) based CMOS active pixel sensor (APS) array for fluoroscopy. Simulations were performed using an 80-kVp-tungsten spectrum and a 200-/J,m pixel. The proposed system appears to exhibit favorable characteristics in terms of charge generation, lag, quantum noise, and other electronic sources of noise, and compared well with other direct conversion detectors. Overall, we expect the system to be x-ray quantum noise limited under diagnostic exposure conditions for fluoroscopy and conclude that the proposed imager exhibits promising characteristics for applications in diagnostic x-ray imaging.

Original languageEnglish (US)
Pages (from-to)168-174
Number of pages7
JournalIEEE Sensors Journal
Volume1
Issue number2
DOIs
StatePublished - Dec 1 2001
Externally publishedYes

Keywords

  • CMOS
  • Cadmium zinc telluride
  • Digital flouroscopy
  • Noise analysis
  • Semiconductor detector
  • X-ray

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Theoretical analysis of hybrid flat-panel detector arrays for digital X-ray fluoroscopy: General system architecture, signal, and noise processes'. Together they form a unique fingerprint.

  • Cite this