Photoacoustic properties of plasmonic nanoparticle-coated microbubbles

  • Adam J. DIxon
  • , Song Hu
  • , Alexander L. Klibanov
  • , John A. Hossack

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We present the design of a multimodality contrast agent for photoacoustic and ultrasound imaging comprised of microbubbles coated with optically absorbing gold nanorods (AuMBs). We hypothesized that coupling nanorods to the microbubble shell would drive thermal expansion of the microbubble's gaseous core and result in an amplified photoacoustic emission following excitation by nanosecond pulsed laser irradiation. We also simulated heat transfer between gold nanorods irradiated by low-energy laser pulses and the AuMB gas core to model the radial expansion of single AuMBs following laser irradiation. The simulation results predict that AuMBs exhibit radial oscillations between 10 - 100 nm at frequencies determined by their resonant frequency. Results of both in vitro and in vivo ultrasound/photoacoustic dual-modality imaging are also presented.

Original languageEnglish
Title of host publication2015 IEEE International Ultrasonics Symposium, IUS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479981823
DOIs
StatePublished - Nov 13 2015
EventIEEE International Ultrasonics Symposium, IUS 2015 - Taipei, Taiwan, Province of China
Duration: Oct 21 2015Oct 24 2015

Publication series

Name2015 IEEE International Ultrasonics Symposium, IUS 2015

Conference

ConferenceIEEE International Ultrasonics Symposium, IUS 2015
Country/TerritoryTaiwan, Province of China
CityTaipei
Period10/21/1510/24/15

Keywords

  • cavitation
  • finite element modeling
  • gold nanorod
  • microbubble
  • photoacoustics

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