Performance of a volumetric CT scanner based upon a flat-panel imager

D. A. Jaffray, J. H. Siewerdsen, D. G. Drake

Research output: Contribution to journalConference articlepeer-review

21 Scopus citations


A table-top cone-beam computed tomography (CBCT) scanner based upon an a-Si:H flat-panel imager (FPI) has been constructed, and a system for CBCT image acquisition, processing, and reconstruction has been implemented. This system is capable of producing high-quality volumetric images. Reconstructions were generated from 300 radiographs obtained at 1.2° increments through 360°. Image acquisition and reconstruction required approximately 30 min and approximately 2 h 20 min, respectively. The system has demonstrated signal and noise performance comparable to that of commercial CT scanners. The imaging performance of the prototype supports the hypothesis that FPI can be employed in computed tomography applications.

Original languageEnglish (US)
Pages (from-to)204-214
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Issue numberI
StatePublished - Jan 1 1999
Externally publishedYes
EventProceedings of the 1999 Medical Imaging - Physics of Medical Imaging - San Diego, CA, USA
Duration: Feb 21 1999Feb 23 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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