Modulated imaging: A novel method for quantifying tissue chromophores in evolving cerebral ischemia

David Abookasis, Marlon S. Mathews, Christopher Lay, Ron D. Frostig, Bruce J. Tromberg

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

The authors report the results of utilizing spatially-modulated near infrared light using Modulated Imaging (MI) technology in imaging cerebral ischemia. MI images of the left parietal somatosensory cortex were obtained post-occlusion and up to three hours following middle cerebral artery occlusion. Tissue chromophore maps were obtained to demonstrate spatiotemporal changes in the distribution of oxy, deoxy, total hemoglobin, and oxygen saturation. MI recorded a decrease in oxyhemoglobin concentration and tissue oxygen saturation and increase in tissue deoxyhemoglobin concentration following occlusion. Optical intrinsic signal was used to detect functional activation of the somatosensory barrel cortex to whisker stimulation. This activation was completely lost following occlusion. Imaging findings in a transient ischemic attack using photothrombosis is also demonstrated.

Original languageEnglish
Title of host publicationMedical Imaging 2007
Subtitle of host publicationPhysiology, Function, and Structure from Medical Images
EditionPART 1
DOIs
StatePublished - 15 Oct 2007
Externally publishedYes
EventMedical Imaging 2007: Physiology, Function, and Structure from Medical Images - San Diego, CA, United States
Duration: 18 Feb 200720 Feb 2007

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
NumberPART 1
Volume6511
ISSN (Print)1605-7422

Conference

ConferenceMedical Imaging 2007: Physiology, Function, and Structure from Medical Images
Country/TerritoryUnited States
CitySan Diego, CA
Period18/02/0720/02/07

Keywords

  • Brain attack
  • Ischemia
  • MCA stroke
  • Modulated imaging
  • Stroke
  • TIA

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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