A Caltech Library Service

Negative lens concept for photoacoustic tomography

Li, Changhui and Ku, Geng and Wang, Lihong V. (2008) Negative lens concept for photoacoustic tomography. Physical Review E, 78 (2). Art. No. 021901. ISSN 1539-3755. PMCID PMC2602847. doi:10.1103/PhysRevE.78.021901.

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


Although a small point ultrasound transducer has a wide acceptance angle, its small active area leads to a high thermal-noise-induced electric voltage in the transducer, thus the sensitivity is low. By contrast, a finite-size flat transducer has high sensitivity, but the acceptance angle is small, which limits its application in reconstruction-based photoacoustic tomography (PAT). Here, we propose a negative lens concept to increase the acceptance angle of a flat transducer without losing sensitivity. Phantom experiments demonstrate that use of this concept greatly increases the detection region for PAT with high sensitivity.

Item Type:Article
Related URLs:
URLURL TypeDescription CentralArticle
Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2008 The American Physical Society. Received 4 March 2008; published 6 August 2008. This project was sponsored in part by National Institutes of Health Grants No. R01 NS46214 and No. R01 EB000712.
Funding AgencyGrant Number
NIHR01 NS46214
NIHR01 EB000712
Issue or Number:2
Classification Code:PACS number(s): 87.57.-s, 42.30.Wb
PubMed Central ID:PMC2602847
Record Number:CaltechAUTHORS:20160923-155924471
Persistent URL:
Official Citation:Negative lens concept for photoacoustic tomography Changhui Li, Geng Ku, and Lihong V. Wang Phys. Rev. E 78, 021901
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:70572
Deposited By: Tony Diaz
Deposited On:28 Sep 2016 23:34
Last Modified:11 Nov 2021 04:31

Repository Staff Only: item control page