Fiber-optic probes for biomedical optoacoustic imaging, monitoring, and sensing

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

Abstract

We proposed biomedical optoacoustics/photoacoustics more than 25 years ago and developed this technology for imaging, monitoring, and sensing applications [1-35]. Optoacoustic diagnostic modality is based on thermoelastic generation of optoacoustic waves and combines high optical contrast and ultrasound spatial resolution. We developed optoacoustic systems (including highly-compact, multi-wavelength, fibercoupled, FDA-compliant laser diode systems) with fiber-optic, ultra-sensitive, wide-band optoacoustic probes. We tested them in small and large animal studies and in clinical studies in healthy volunteers and patients with traumatic brain injury and circulatory shock as well as in neonatal and fetal patients. The high sensitivity and bandwidth of the fiber-optic optoacoustic probes allowed for: 1) signal detection from tissues at depths well beyond the optical diffusion limit (up to several centimeters); 2) detection of microscopic tissue volumes; 3) optoacoustic imaging in large tissue phantoms and tissues with high resolution; 4) monitoring of tissue thermotherapy; 5) noninvasive probing of cerebral tissues in large animals and in humans (both neonates and adults); 6) accurate oxygenation measurements in humans in tissues and in specific blood vessels; and 7) optoacoustic waves therapeutic effects that can be used for noninvasive optoacoustic theranostics. The obtained data indicated that the systems were capable of optoacoustic measurements and mapping of cerebral blood oxygenation in adults and in neonates, detection of intracranial hematomas, oxygenation measurements both from cerebral and central blood vessels and from cerebral tissues.

Original languageEnglish (US)
Title of host publicationSeventh European Workshop on Optical Fibre Sensors
EditorsKyriacos Kalli, Gilberto Brambilla, Sinead O'Keeffe
PublisherSPIE
ISBN (Electronic)9781510631236
DOIs
StatePublished - 2019
Event7th European Workshop on Optical Fibre Sensors, EWOFS 2019 - Limassol, Cyprus
Duration: Oct 1 2019Oct 4 2019

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11199
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference7th European Workshop on Optical Fibre Sensors, EWOFS 2019
Country/TerritoryCyprus
CityLimassol
Period10/1/1910/4/19

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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