All-optical generation and detection of acoustic waves for intravascular ultrasound and photoacoustic imaging

Bao Yu Hsieh*, Sung Liang Chen, Tao Ling, L. Jay Guo, Pai Chi Li

*Corresponding author for this work

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

1 Scopus citations

Abstract

The combination of intravascular ultrasound (IVUS) and photoacoustic (IVPA) imaging has been a potentially effective tool for detection of atherosclerotic plaques. Its clinical applications, however, have been hindered by several factors, including the lack of a cost-effective solution for a disposable scanhead. In this study, we propose a new scanhead design for IVUS/IVPA imaging. Specifically, the design is based on optical generation and detection of acoustic waves for both imaging modalities. No electronic components and conventional piezoelectric materials are used and the design is suitable for one-time, disposable use. The all-optical IVUS/IVPA imaging scanhead consists of an optical fiber with an axicon tip for excitation, and a microring for acoustic detection. Using a single firing of laser pulse, an ultrasound (US) signal can be generated and transmitted by the scanhead and a photoacoustic (PA) signal from the object can be induced. It has been tested on a grid phantom. The -6dB spatial resolution for lateral and axial direction were estimated at 305μm and 169μm. In our study, US and PA signals are separated by time delays and a subband imaging technique. In addition, mass production is possible with the adoption of the nanoimprint technique for fabrication. Therefore, this design has the potential to be a useful clinical tool for atherosclerosis diagnosis in the future.

Original languageEnglish
Title of host publication2011 IEEE International Ultrasonics Symposium, IUS 2011
Pages1175-1178
Number of pages4
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 IEEE International Ultrasonics Symposium, IUS 2011 - Orlando, FL, United States
Duration: 18 10 201121 10 2011

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Conference

Conference2011 IEEE International Ultrasonics Symposium, IUS 2011
Country/TerritoryUnited States
CityOrlando, FL
Period18/10/1121/10/11

Keywords

  • Atherosclerosis plaque
  • Intravascular ultrasound (IVUS)/photoacoustic (IVPA) imaging
  • Optical detection ultrasound
  • Optical generation of ultrasound
  • Polymer microring resonator

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