Investigation of the effects of multi-angle compounding in photoacoustic imaging

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The signal-to-noise ratio (SNR) of photoacoustic (PA) images of carotid arteries is considerably low for in vivo measurements. Compounding of the acquisitions from multiple locations might improve SNR of PA images. In this study, we investigated the effects of spatial compounding based on SNR comparison of PA images of a polyvinyl alcohol (PVA) phantom and an ex vivo carotid plaque, both imaged in an experimental setting. PA and plane wave ultrasound (PUS) data were acquired in a cross-section of each sample. The sample was rotated by 10° and measurements were repeated for 36 angles. Results showed that PA compounding elevated the SNR by 28.7±5.1 dB for the PVA sample and 5.5±2.4 dB for the plaque sample. Additionally, the compounding results for the limited range of rotation as would be feasible in vivo ( -30 to +30) showed an enhancement in SNR of 7.02 ± 2.73 dB. For the future, extra characterization parameters such as resolution, contrast, and sensitivity will be investigated under in vivo conditions.
Original languageEnglish
Title of host publication2016 IEEE International Ultrasonics Symposium (IUS)
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages3
Publication statusPublished - 2016
Event2016 IEEE International Ultrasonics Symposium (IUS 2016) - Convention Center Vinci, Tours, France
Duration: 18 Sept 201621 Sept 2016


Conference2016 IEEE International Ultrasonics Symposium (IUS 2016)
Abbreviated titleIUS 2016
Internet address


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