| Literature DB >> 19405775 |
Abstract
The mouse cerebral cortex was imaged in situ by photoacoustic tomography (PAT). Instead of a flat ultrasonic transducer, a virtual point detector based on a high numerical aperture (NA), positively focused transducer was used. This virtual point detector has a wide omnidirectional acceptance angle, a high sensitivity, and a negligible aperture effect. In addition, the virtual point detector can be located much more closely to the object during the detection. Compared with a finite-size flat transducer, images generated by using this virtual point detector have both uniform signal-to-noise ratio (SNR) and resolution.Entities:
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Year: 2009 PMID: 19405775 PMCID: PMC2858757 DOI: 10.1117/1.3122365
Source DB: PubMed Journal: J Biomed Opt ISSN: 1083-3668 Impact factor: 3.170