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High-numerical-aperture-based virtual point detectors for photoacoustic tomography

Li, Changhui and Wang, Lihong V. (2008) High-numerical-aperture-based virtual point detectors for photoacoustic tomography. Applied Physics Letters, 93 (3). Art. No. 033902. ISSN 0003-6951. PMCID PMC2542881. doi:10.1063/1.2963365.

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The focal point of a high-numerical-aperture (NA) ultrasonic transducer can be used as a virtual point detector. This virtual point detector detects omnidirectionally over a wide acceptance angle. It also combines a large active transducer surface and a small effective virtual detector size. Thus the sensitivity is high compared with that of a real point detector, and the aperture effect is small compared with that of a finite size transducer. We present two kinds of high-NA-based virtual point detectors and their successful application in photoacoustic tomography. They can also be applied in other ultrasound-related fields.

Item Type:Article
Related URLs:
URLURL TypeDescription CentralArticle
Wang, Lihong V.0000-0001-9783-4383
Additional Information:© 2008 American Institute of Physics. Received 21 April 2008; Accepted 02 July 2008; Published online 22 July 2008. We thank Dr. Xinmai Yang for helping us manufacture the detector. This project was sponsored in part by National Institutes of Health Grant Nos. R01 NS46214 and R01 EB000712.
Funding AgencyGrant Number
NIHR01 NS46214
NIHR01 EB000712
Issue or Number:3
PubMed Central ID:PMC2542881
Record Number:CaltechAUTHORS:20160923-124341481
Persistent URL:
Official Citation:High-numerical-aperture-based virtual point detectors for photoacoustic tomography Li, Changhui and Wang, Lihong V., Applied Physics Letters, 93, 033902 (2008), DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:70559
Deposited By: Tony Diaz
Deposited On:28 Sep 2016 23:41
Last Modified:11 Nov 2021 04:31

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