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Related Concept Videos

Total Internal Reflection Fluorescence Microscopy01:05

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Agarose-based Tissue Mimicking Optical Phantoms for Diffuse Reflectance Spectroscopy
09:25

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Published on: August 22, 2018

Phantoms for diffuse optical imaging based on totally absorbing objects, part 1: Basic concepts.

Fabrizio Martelli1, Antonio Pifferi, Davide Contini

  • 1Dipartimento di Fisica e Astronomia dell'Università degli Studi di Firenze, Via G. Sansone 1, 50019 Sesto Fiorentino, Firenze, Italy. fabrizio.martelli@unifi.it

Journal of Biomedical Optics
|June 20, 2013
PubMed
Summary
This summary is machine-generated.

This study introduces the equivalent black volume concept for creating realistic diffuse optical imaging phantoms. This method simplifies phantom design and allows for reproducible grading of optical perturbations, aiding instrument assessment.

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Area of Science:

  • Biomedical Optics
  • Medical Imaging
  • Phantom Development

Background:

  • Diffuse optical imaging requires well-characterized phantoms to simulate biological tissues.
  • Creating realistic inhomogeneous phantoms with controlled optical properties is challenging.

Purpose of the Study:

  • To propose and validate a method for designing inhomogeneous phantoms for diffuse optical imaging.
  • To introduce the concept of equivalent black volume for mimicking realistic absorbing inhomogeneities.

Main Methods:

  • Utilized time-resolved and continuous-wave Monte Carlo simulations.
  • Investigated the relationship between realistic absorbing objects and totally absorbing objects (equivalent black volume).

Main Results:

  • Demonstrated that a realistic absorbing inhomogeneity can be approximated by a totally absorbing object of equivalent black volume.
  • Provided plots and interpolating functions to determine equivalent black volume for specific absorption changes.
  • Showcased the application of this concept for grading optical perturbations in phantoms.

Conclusions:

  • The equivalent black volume concept offers a simplified approach to designing inhomogeneous phantoms with tunable perturbation strengths.
  • This method facilitates the reproducible assessment of diffuse optical imaging instruments by providing a standardized scale for optical perturbations.