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Spatial Sensitivity to Absorption Changes for Various Near-Infrared Spectroscopy Methods: A Compendium Review.

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Summary
This summary is machine-generated.

This review maps spatial sensitivity in diffuse optical media for near-infrared spectroscopy. It compiles sensitivity maps across continuous-wave, frequency-domain, and time-domain measurements to aid researchers.

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Area of Science:

  • Biomedical Optics
  • Photonics
  • Medical Imaging

Background:

  • Near-infrared spectroscopy (NIRS) measures light absorption in diffuse media.
  • Understanding sensitivity to localized absorption changes is crucial for NIRS accuracy.
  • Spatial sensitivity maps visualize how NIRS measurements relate to specific tissue locations.

Purpose of the Study:

  • To provide a historical overview of spatial sensitivity research in diffuse optical media.
  • To present a comprehensive compendium of spatial sensitivity maps for NIRS.
  • To offer a resource for comparing and generating sensitivity maps.

Main Methods:

  • Review of experimental and theoretical studies on spatial sensitivity over 30 years.
  • Generation of 1-, 2-, and 3-dimensional sensitivity maps for various NIRS methods.
  • Organization of sensitivity maps by temporal domain (continuous-wave, frequency-domain, time-domain) and data-type.

Main Results:

  • Detailed historical progression of spatial sensitivity investigations in diffuse optics.
  • A structured compendium of sensitivity maps for diverse NIRS applications.
  • Inclusion of methods and code for generating custom sensitivity maps.

Conclusions:

  • This compendium serves as a unified resource for researchers in diffuse optics and NIRS.
  • It enables visualization, comparison, and generation of spatial sensitivity to absorption changes.
  • Facilitates a deeper understanding of NIRS measurement localization and accuracy.