Multi-bandwidth image reconstruction in photoacoustic tomography

Cheng Ying Chou, Mark A. Anastasio, Jin Zhang, Geng Ku, Xinmai Yang, Lihong V. Wang

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


Photoacoustic tomography (PAT), also referred to optoacoustic tomography, is a hybrid imaging technique that combines an optical contrast mechanism and ultrasonic detection principles. The laser-induced photoacoustic signals in PAT are broadband in nature, but only a bandpass approximation of the signal is recorded by use of a conventional ultrasonic transducers due to its limited bandwidth. To circumvent this, a PAT system has been developed that records photoacoustic signals by use of multiple ultrasonic transducers that possess different central frequencies. In this work, we investigate a sensor fusion methodology for combining the multiple measurements to obtain an estimate of the true photoacoustic signal that is superior to that obtainable by use of any single transducer measurement. From the estimated photoacoustic signals, three-dimensional images of the optical absorption distribution are reconstructed and are found to possess improved accuracy and statistical properties as compared to the single transducer case. Preliminary computer-simulation studies are presented to demonstrate and investigate the proposed method.

Original languageEnglish (US)
Title of host publicationPhotons Plus Ultrasound
Subtitle of host publicationImaging and Sensing 2008: The Ninth Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics
StatePublished - Apr 23 2008
Externally publishedYes
Event9th Conference on Photons Plus Ultrasound: Imaging and Sensing 2008 - San Jose, CA, United States
Duration: Jan 20 2008Jan 23 2008

Publication series

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


Conference9th Conference on Photons Plus Ultrasound: Imaging and Sensing 2008
Country/TerritoryUnited States
CitySan Jose, CA


  • Photoacoustic tomography
  • Sensor fusion

ASJC Scopus subject areas

  • General Engineering


Dive into the research topics of 'Multi-bandwidth image reconstruction in photoacoustic tomography'. Together they form a unique fingerprint.

Cite this