Comparison of Flexible Array with Laparoscopic Transducer for Photoacoustic-Guided Surgery

Jiaxin Zhang, Alycen Wiacek, Ziwei Feng, Kai Ding, Muyinatu A. Lediju Bell

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

Abstract

Photoacoustic imaging has recently demonstrated strong viability to visualize tool tips and assist with guidance during surgeries and interventional procedures. The more conventional rigid ultrasound transducers that can be used to sense photoacoustic signals require applied pressure for complete tissue contact when placed on curved surfaces. However, emerging flexible arrays are better suited to conform to different anatomical geometries. This work presents photoacoustic images acquired with a conventional laparoscopic transducer and a more flexible transducer array when placed in contact with surfaces of different curvatures, providing quantitative comparisons of image quality and transducer characterization. An optical fiber was inserted and translated within hemispherical phantoms along each transducer’s elevation dimension to estimate the corresponding elevation field-of-view (FOV). A wider elevation FOV was measured with the flexible array, which indicates decreased elevation localization certainty, but increased ability to find tool tips when compared to the laparascopic probe. The average target depth accuracy was 99.36% with the flexible array and 95.05% with the laparoscopic probe, due to the differences in pressure required to maintain acoustic contact. Image contrast and signal-to-noise ratios were greater with the flexible array than with the laparoscopic probe. These properties of the flexible array enhance its desirability for photoacoustic-guided surgical interventions.

Original languageEnglish (US)
Title of host publicationPhotons Plus Ultrasound
Subtitle of host publicationImaging and Sensing 2023
EditorsAlexander A. Oraevsky, Lihong V. Wang
PublisherSPIE
ISBN (Electronic)9781510658639
DOIs
StatePublished - 2023
EventPhotons Plus Ultrasound: Imaging and Sensing 2023 - San Francisco, United States
Duration: Jan 29 2023Feb 1 2023

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume12379
ISSN (Print)1605-7422

Conference

ConferencePhotons Plus Ultrasound: Imaging and Sensing 2023
Country/TerritoryUnited States
CitySan Francisco
Period1/29/232/1/23

ASJC Scopus subject areas

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

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