Abstract

Cross-correlation (radar) frequency-domain photoacoustic (PA) imaging parameters [signal-to-noise ratio (SNR), contrast, and spatial resolution] are explored. The application of nonlinear frequency modulation instead of the standard linear frequency chirps is investigated. In addition to the image produced by the amplitude of the cross correlation between input and detected signals, the phase of the correlation signal is used as a filter of the PA amplitude combined with linear or nonlinear frequency chirps to improve SNR, contrast, and spatial resolution. The experimental results with a high-frequency transducer exhibit more than 10 and 8 times contrast enhancement using nonlinear and linear chirps, respectively. Concomitant improvements in SNR and image resolution were also observed.

© 2010 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Frequency-domain photoacoustic phased array probe for biomedical imaging applications

Sergey Telenkov, Rudolf Alwi, Andreas Mandelis, and Arthur Worthington
Opt. Lett. 36(23) 4560-4562 (2011)

Photoacoustic radar phase-filtered spatial resolution and co-registered ultrasound image enhancement for tumor detection

Edem Dovlo, Bahman Lashkari, Andreas Mandelis, Wei Shi, and Fei-Fei Liu
Biomed. Opt. Express 6(3) 1003-1009 (2015)

Wavelength-modulated differential photoacoustic radar imager (WM-DPARI): accurate monitoring of absolute hemoglobin oxygen saturation

Sung Soo Sean Choi, Bahman Lashkari, Edem Dovlo, and Andreas Mandelis
Biomed. Opt. Express 7(7) 2586-2596 (2016)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription