Enabling vendor independent photoacoustic imaging systems with asynchronous laser source

Yixuan Wu, Haichong K. Zhang, Emad Boctor

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

Abstract

Channel data acquisition, and synchronization between laser excitation and PA signal acquisition, are two fundamental hardware requirements for photoacoustic (PA) imaging. Unfortunately, however, neither is equipped by most clinical ultrasound scanners. Therefore, less economical specialized research platforms are used in general, which hinders a smooth clinical transition of PA imaging. In previous studies, we have proposed an algorithm to achieve PA imaging using ultrasound post-beamformed (USPB) RF data instead of channel data. This work focuses on enabling clinical ultrasound scanners to implement PA imaging, without requiring synchronization between the laser excitation and PA signal acquisition. Laser synchronization is inherently consisted of two aspects: frequency and phase information. We synchronize without communicating the laser and the ultrasound scanner by investigating USPB images of a point-target phantom in two steps. First, frequency information is estimated by solving a nonlinear optimization problem, under the assumption that the segmented wave-front can only be beamformed into a single spot when synchronization is achieved. Second, after making frequencies of two systems identical, phase delay is estimated by optimizing the image quality while varying phase value. The proposed method is validated through simulation, by manually adding both frequency and phase errors, then applying the proposed algorithm to correct errors and reconstruct PA images. Compared with the ground truth, simulation results indicate that the remaining errors in frequency correction and phase correction are 0.28% and 2.34%, respectively, which affirm the potential of overcoming hardware barriers on PA imaging through software solution.

Original languageEnglish (US)
Title of host publicationPhotons Plus Ultrasound
Subtitle of host publicationImaging and Sensing 2018
PublisherSPIE
Volume10494
ISBN (Electronic)9781510614734
DOIs
StatePublished - Jan 1 2018
EventPhotons Plus Ultrasound: Imaging and Sensing 2018 - San Francisco, United States
Duration: Jan 28 2018Feb 1 2018

Other

OtherPhotons Plus Ultrasound: Imaging and Sensing 2018
CountryUnited States
CitySan Francisco
Period1/28/182/1/18

Fingerprint

Photoacoustic effect
Imaging systems
Light sources
Lasers
synchronism
scanners
Ultrasonics
lasers
Synchronization
Imaging techniques
acquisition
hardware
Laser excitation
communicating
binary systems (materials)
ground truth
phase error
Ultrasonography
wave fronts
Software

ASJC Scopus subject areas

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

Cite this

Wu, Y., Zhang, H. K., & Boctor, E. (2018). Enabling vendor independent photoacoustic imaging systems with asynchronous laser source. In Photons Plus Ultrasound: Imaging and Sensing 2018 (Vol. 10494). [104945M] SPIE. https://doi.org/10.1117/12.2290803

Enabling vendor independent photoacoustic imaging systems with asynchronous laser source. / Wu, Yixuan; Zhang, Haichong K.; Boctor, Emad.

Photons Plus Ultrasound: Imaging and Sensing 2018. Vol. 10494 SPIE, 2018. 104945M.

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

Wu, Y, Zhang, HK & Boctor, E 2018, Enabling vendor independent photoacoustic imaging systems with asynchronous laser source. in Photons Plus Ultrasound: Imaging and Sensing 2018. vol. 10494, 104945M, SPIE, Photons Plus Ultrasound: Imaging and Sensing 2018, San Francisco, United States, 1/28/18. https://doi.org/10.1117/12.2290803
Wu Y, Zhang HK, Boctor E. Enabling vendor independent photoacoustic imaging systems with asynchronous laser source. In Photons Plus Ultrasound: Imaging and Sensing 2018. Vol. 10494. SPIE. 2018. 104945M https://doi.org/10.1117/12.2290803
Wu, Yixuan ; Zhang, Haichong K. ; Boctor, Emad. / Enabling vendor independent photoacoustic imaging systems with asynchronous laser source. Photons Plus Ultrasound: Imaging and Sensing 2018. Vol. 10494 SPIE, 2018.
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