Mr. Jason D. Komadina Profile

Jason D. Komadina

at Beckman Laser Inst & Med Clin

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 1 July 2003 Paper

Photoacoustic diffraction studies of planar tissue phantoms

Jason Komadina, John Viator, J. Stuart Nelson

Proceedings Volume 4960, (2003) https://doi.org/10.1117/12.477824

KEYWORDS: Photoacoustic spectroscopy, Acoustics, Tissue optics, Sensors, Transducers, Laser tissue interaction, Absorption, Pulsed laser operation, Signal detection, Diffraction

Read Abstract +

Precise knowledge of the acoustic field in biological tissue after pulsed laser irradiation is necessary in order to perform medical imaging. Often, the photoacoustic pulse is delivered as a circular, stress confined laser spot incident upon a planar surface, such as skin. The resulting photoacoustic wave propagates in the tissue and may be detected by a detector or array of detectors. The detected signals can then be used to reconstruct the optical properties and, perhaps, the structure of the tissue. In this paper, we study the beam profile of a circular laser spot incident upon tissue phantoms and propose a paradigm for further investigations, comparing the photoacoustic source as a baffled acoustic piston. Two phantom geometries were studied, a hemisperical acrylamide gel and a dyed water solution. An acoustic transducer with an active area of 200 μm was scanned about the circumference of the hemisphere. The laser spot was incident on the face. For the dye solution, the transducer was submerged and rotated about the laser spot on the water surface. The beam profile of the gel showed some diffractive lobes while the profile from the dyed solution did not, though the main lobe was more robust.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years