Photoacoustic imaging of hidden dental caries by using a bundle of hollow optical fibers

Takuya Koyama, Satoko Kakino, Yuji Matsuura

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

1 Citation (Scopus)

Abstract

Photoacoustic imaging system using a bundle of hollow-optical fibers to detect hidden dental caries is proposed. Firstly, we fabricated a hidden caries model with a brown pigment simulating a common color of caries lesion. It was found that high frequency ultrasonic waves are generated from hidden carious part when radiating Nd:YAG laser light with a 532 nm wavelength to occlusal surface of model tooth. We calculated by Fourier transform and found that the waveform from the carious part provides frequency components of approximately from 0.5 to 1.2 MHz. Then a photoacoustic imaging system using a bundle of hollow optical fiber was fabricated for clinical applications. From intensity map of frequency components in 0.5-1.2 MHz, photoacoustic images of hidden caries in the simulated samples were successfully obtained.

Original languageEnglish
Title of host publicationOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVIII
EditorsIsrael Gannot, Israel Gannot
PublisherSPIE
ISBN (Electronic)9781510614611
DOIs
Publication statusPublished - 2018 Jan 1
EventOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVIII 2018 - San Francisco, United States
Duration: 2018 Jan 272018 Jan 28

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume10488
ISSN (Print)1605-7422

Other

OtherOptical Fibers and Sensors for Medical Diagnostics and Treatment Applications XVIII 2018
CountryUnited States
CitySan Francisco
Period18/1/2718/1/28

Keywords

  • Hidden caries
  • Hollow optical fiber
  • Photoacoustic imaging

ASJC Scopus subject areas

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

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