Published February 24, 2009
| Published
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High-NA-based virtual point detectors for photoacoustic imaging
- Creators
- Li, Changhui
-
Wang, Lihong V.
- Others:
- Oraevsky, Alexander
- Wang, Lihong V.
Abstract
We demonstrated 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. Phantom experiments are provided to demonstrate the applications of high-NA-based virtual point detectors in photoacoustic tomography and thermoacoustic tomography. The virtual point detector is also used to image the cerebral cortex of mice.
Additional Information
© 2009 Society of Photo-Optical Instrumentation Engineers (SPIE). This project was sponsored in part by National Institutes of Health Grant Nos. R01 EB000712, R01 NS46214(BRP), R01 EB000712, and U54 CA136398. L. Wang has a financial interest in Endra, Inc., which, however, did not support this work.Attached Files
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Additional details
- Eprint ID
- 89874
- Resolver ID
- CaltechAUTHORS:20180921-100906303
- R01 EB000712
- NIH
- R01 NS46214
- NIH
- R01 EB000712
- NIH
- U54 CA136398
- NIH
- Created
-
2018-09-24Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 7177