3D photoacoustic imaging using a staring-sparse array with 60 transducers

Michael B. Roumeliotis; Ivan Kosik; Jeffrey J. L. Carson

doi:10.1117/12.908841

23 February 2012 3D photoacoustic imaging using a staring-sparse array with 60 transducers

Michael B. Roumeliotis, Ivan Kosik, Jeffrey J. L. Carson

Proceedings Volume 8223, Photons Plus Ultrasound: Imaging and Sensing 2012; 82233F (2012) https://doi.org/10.1117/12.908841
Event: SPIE BiOS, 2012, San Francisco, California, United States

Abstract

Photoacoustic imaging is a hybrid imaging modality capable of producing images based on optical contrast, but with depth penetration and resolution similar to ultrasound imaging. In this work, a staring, sparse approach to 3D photoacoustic imaging was used to image a number of objects. The photoacoustic system described in this paper improved upon a previous generation that contained 30 commercial transducers, by incorporating 60 custom-built transducers into a compact hemispherical array. Imaging was performed by acquiring an experimental estimate of the imaging operator and solving a linear system model to provide an estimate of the object. The imaging operator contained 18,000 voxels, each at 0.5-mm isotropic resolution. The dimensions of the imaging operator were 30 mm × 30 mm × 2.5 mm. In the first experiment, a black wire was arranged in a triangular shape and imaged in a 0.3% Intralipid^TM solution. The second experiment utilized a rotating human hair, where the hair was imaged at different angular positions. Both objects were successfully captured with reasonable accuracy, though image artifacts were present in both sets of images. The experimental results demonstrated that objects of substantial geometrical complexity could be reconstructed using measurements from only 60 transducers with prior knowledge of the imaging operator.

Citation Download Citation

Michael B. Roumeliotis, Ivan Kosik, and Jeffrey J. L. Carson "3D photoacoustic imaging using a staring-sparse array with 60 transducers", Proc. SPIE 8223, Photons Plus Ultrasound: Imaging and Sensing 2012, 82233F (23 February 2012); https://doi.org/10.1117/12.908841

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available