Abstract

A basic requirement for intravascular photoacoustic (IVPA) imaging catheters is that the delivery of light lies within the ultrasonic field of view. Size and manufacturing constraints favor probe designs with offset optical and acoustic beams. This noncollinear dual beam arrangement leads to a curved PA point spread function (PSF). In this work, we characterize the three-dimensional shape of the PSF for IVPA imaging in clear and optically scattering media. We show that the product of the two beam profiles can accurately model the measured peak response in clear and scattering media. We discuss the impact of the PSF shape and its relation to probe construction. We test the imaging capability of the catheter on a phantom and a human artery ex vivo.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Real-time volumetric lipid imaging in vivo by intravascular photoacoustics at 20 frames per second

Min Wu, Geert Springeling, Matija Lovrak, Frits Mastik, Sophinese Iskander-Rizk, Tianshi Wang, Heleen M. M. van Beusekom, A. F. W. van der Steen, and Gijs Van Soest
Biomed. Opt. Express 8(2) 943-953 (2017)

Lipid detection in atherosclerotic human coronaries by spectroscopic intravascular photoacoustic imaging

Krista Jansen, Min Wu, Antonius F. W. van der Steen, and Gijs van Soest
Opt. Express 21(18) 21472-21484 (2013)

High-speed intravascular photoacoustic imaging at 1.7 μm with a KTP-based OPO

Jie Hui, Qianhuan Yu, Teng Ma, Pu Wang, Yingchun Cao, Rebecca S. Bruning, Yueqiao Qu, Zhongping Chen, Qifa Zhou, Michael Sturek, Ji-Xin Cheng, and Weibiao Chen
Biomed. Opt. Express 6(11) 4557-4566 (2015)

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 (8)

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

Tables (1)

You do not have subscription access to this journal. Article tables 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