X-ray excited luminescent chemical imaging (XELCI) for non-invasive imaging of implant infections

Donald Benza, Unaiza Uzair, Yash Raval, Tzuen Rong J. Tzeng, Caleb J. Behrend, Jeffrey N. Anker

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

5 Scopus citations

Abstract

X-ray excited luminescent chemical imaging (XELCI) uses a combination of X-ray excitation to provide high resolution and optical detection to provide chemical sensing. A key application is to detect and study implant-associated infection. The implant is coated with a layer of X-ray scintillators which generate visible near infrared light when irradiated with an X-ray beam. This light first passes through a pH indicator dye-loaded film placed over the scintillator film in order to modulate the luminescence spectrum according to pH. The light then passes through tissue is collected and the spectral ratio measured to determine pH. A focused X-ray beam irradiates a point in the scintillator film, and a pH image is formed point-by-point by scanning the beam across the sample. The sensor and scanning system are described along with preliminary results showing images in rabbit models.

Original languageEnglish (US)
Title of host publicationFrontiers in Biological Detection
Subtitle of host publicationFrom Nanosensors to Systems IX
EditorsSharon M. Weiss, Amos Danielli, Benjamin L. Miller
PublisherSPIE
ISBN (Electronic)9781510606036
DOIs
StatePublished - 2017
Externally publishedYes
EventFrontiers in Biological Detection: From Nanosensors to Systems IX - San Francisco, United States
Duration: Jan 29 2017Jan 30 2017

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume10081
ISSN (Print)1605-7422

Conference

ConferenceFrontiers in Biological Detection: From Nanosensors to Systems IX
Country/TerritoryUnited States
CitySan Francisco
Period1/29/171/30/17

Keywords

  • Biofilm
  • Implanted Medical Devices.
  • PH indicators
  • Radioluminescence
  • Sensors
  • X-ray excited optical luminescence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

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