Imaging performance of a terbium-doped fiber optic screen for diagnostic imaging

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

The resolution of a fiberoptical boule was determined experimentally. A boule is a matrix of scintillating glass fibers arranged parallel to each other and compressed into a thick plate. A 51 mm × 51 mm by 3 mm thick terbium-activated boule was optically coupled to a 1 k × 1 k × 16 bit CCD camera. The image of an edge was used to compute the line spread function, and the modulation transfer function was calculated. After correcting for the MTF of the CCD and optics, the MTF of the fiberoptical plate demonstrated 20% modulation at a spatial resolution of 15 line pairs per millimeter. The x-ray absorption of the 3 mm thick plate was 98% at 70 kV (3.3. mm half value layer). It is shown using simple trigonometry that for a very high resolution detector, x-ray beam divergence (angled photons striking the receptor) at the periphery of the field of view may cause substantial resolution losses. The role that fiberoptical plate technology may play in diagnostic medical imaging is discussed.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsRodney Shaw
Place of PublicationBellingham, WA, United States
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Pages64-72
Number of pages9
Volume2163
ISBN (Print)0819414581
StatePublished - 1994
EventMedical Imaging 1994: Physics of Medical Imaging - Newport Beach, CA, USA
Duration: Feb 13 1994Feb 14 1994

Other

OtherMedical Imaging 1994: Physics of Medical Imaging
CityNewport Beach, CA, USA
Period2/13/942/14/94

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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  • Cite this

    Boone, J. M., Duryea, J., & Seibert, J. A. (1994). Imaging performance of a terbium-doped fiber optic screen for diagnostic imaging. In R. Shaw (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 2163, pp. 64-72). Publ by Society of Photo-Optical Instrumentation Engineers.