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Raman Spectroscopy Instrumentation: Overview01:26

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Time-Resolved Diffuse Optical Spectroscopy and Imaging Using Solid-State Detectors: Characteristics, Present Status,

Mrwan Alayed1,2, M Jamal Deen3,4

  • 1School of Biomedical Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada. alayedms@mcmaster.ca.

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Summary
This summary is machine-generated.

This review explores time-resolved diffuse optical imaging (TR-DOI) systems, focusing on solid-state detectors like Single-Photon Avalanche Diodes (SPADs) and Silicon Photomultipliers (SiPMs) for medical imaging applications.

Keywords:
diffuse optical imagingdiffuse optical spectroscopyfunctional near-infrared spectroscopysilicon photomultiplierssingle-photon avalanche diodetime of flighttime-correlated single-photon countingtime-resolved spectroscopy

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Area of Science:

  • Medical Imaging
  • Biophotonics
  • Optical Physics

Background:

  • Diffuse optical spectroscopy (DOS) and diffuse optical imaging (DOI) are non-invasive techniques with significant potential in medicine.
  • Time-resolved diffuse optical imaging (TR-DOI) enhances structural and functional imaging capabilities.

Purpose of the Study:

  • To review time-resolved diffuse optical imaging (TR-DOI) systems.
  • To focus on solid-state detectors, specifically Single-Photon Avalanche Diodes (SPADs) and Silicon Photomultipliers (SiPMs).
  • To discuss system categorization, performance evaluation, and future potential.

Main Methods:

  • Categorization of TR-DOI systems based on detector operation modes (free-running and time-gated).
  • Description of physical concepts, components, and figures-of-merit for TR-DOI prototypes.
  • Evaluation of TR-DOI prototype performance using standard protocols like basic instrumental performance (BIP).

Main Results:

  • TR-DOI systems using SPADs and SiPMs offer promising advancements in non-invasive medical imaging.
  • Performance evaluation highlights key parameters for assessing TR-DOI system capabilities.
  • SPADs and SiPMs show potential for improving TR-DOI system performance and expanding applications.

Conclusions:

  • Solid-state detectors like SPADs and SiPMs are crucial for advancing TR-DOI technology.
  • Further research into system components and overall integration is needed to overcome current challenges.
  • Future developments in TR-DOI hold significant promise for enhanced medical diagnostics and research.