By Topic

Experimental evaluation of a high-speed photoacoustic tomography system based on a commercial ultrasound unit

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Wang, X. ; Dept. of Radiol., Univ. of Michigan, Ann Arbor, MI ; Fowlkes, J.B. ; Carson, P.L. ; Mo, L.

A high-speed photoacoustic tomography (PAT) data acquisition system has been developed using a commercial ultrasound (US) unit. Since the US unit supports simultaneous signal acquisition from 64 parallel receive channels, PAT data from a 64-element US array aperture can be acquired using a single laser firing. This arrangement enables an object to be scanned in both US imaging and PAT modes using the same US receiving array and view angle, which facilitates off-line image co-registration and interpretation of the PAT data. To examine the performance of this dual-modality system, experiments were conducted using micro-flow vessel phantoms and ex vivo fresh canine prostate specimens. Preliminary results indicate that an object can be imaged successfully in both US and PAT modes, and that ultrasonic and optical contrast can be presented in a composite image display. In the PAT images, vascular structures are presented clearly and consistently with good contrast-to-noise ratio and satisfactory spatial resolution. A tumor-mimicking lesion induced at a depth of 1.5 cm in a canine prostate is also visualized clearly based on the intrinsic optical contrast between the lesion and the background prostate tissue.

Published in:

Ultrasonics Symposium, 2008. IUS 2008. IEEE

Date of Conference:

2-5 Nov. 2008