Focused array transducer for 2D OA tomography

Vladimir A. Makarov; Ivan M. Pelivanov; Victor V. Kozhushko; Tat'yana D. Khokhlova; Alexei N. Zharinov; Alexander A. Karabutov

doi:10.1117/12.483515

1 July 2003 Focused array transducer for 2D OA tomography

Vladimir A. Makarov, Ivan M. Pelivanov, Victor V. Kozhushko, Tat'yana D. Khokhlova, Alexei N. Zharinov, Alexander A. Karabutov

Author Affiliations +

Proceedings Volume 4960, Biomedical Optoacoustics IV; (2003) https://doi.org/10.1117/12.483515
Event: Biomedical Optics, 2003, San Jose, CA, United States

Abstract

Theoretical and experimental investigations of point spread function of focused 32 elements array transducer for laser optoacoustic (OA) tomography have been carried out. The elements were imposed in the radial plane of a cylindrical surface. Specially developed software was used for numerical modeling the problem of OA tomography. Diode-pumped Q-switched Nd:YAG laser was employed for thermo-optical excitation of probe acoustic transients. The correspondence between numerically calculated and measured temporal profiles of acoustic transients detected by a single transducer over wide area around it focal zone was demonstrated. The maps of spatial sensitivity for transducers with aperture angles 30° and 60° were determined experimentally and theoretically. The possibility of localization of the array sensitivity area at the beam waist in the plane perpendicular to the imaging plane has been shown. Back projection algorithm was employed for image reconstruction based on experimentally obtained OA transients from point sources located at different distances from the array. The size of the images allowed to determine transverse and longitudinal resolutions in the imaging plane.

Citation Download Citation

Vladimir A. Makarov, Ivan M. Pelivanov, Victor V. Kozhushko, Tat'yana D. Khokhlova, Alexei N. Zharinov, and Alexander A. Karabutov "Focused array transducer for 2D OA tomography", Proc. SPIE 4960, Biomedical Optoacoustics IV, (1 July 2003); https://doi.org/10.1117/12.483515

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