High contrast three-dimensional photoacoustic imaging through scattering media by localized optical fluence enhancement
| Autor: | Hengyi Ju, Rafael Piestun, Todd W. Murray, Jacob D. Dove, Donald B. Conkey, Antonio M. Caravaca-Aguirre |
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| Rok vydání: | 2013 |
| Předmět: |
Wavefront
Photoacoustic effect Materials science business.industry Scattering Second-harmonic generation Iterative reconstruction Equipment Design Signal Atomic and Molecular Physics and Optics Photoacoustic Doppler effect Equipment Failure Analysis Photoacoustic Techniques Optics Imaging Three-Dimensional Optoelectronics Elasticity Imaging Techniques Ultrasonic sensor business Algorithms |
| Zdroj: | Optics express. 21(22) |
| ISSN: | 1094-4087 |
| Popis: | We demonstrate enhanced three-dimensional photoacoustic imaging behind a scattering material by increasing the fluence in the ultrasound transducer focus. We enhance the optical intensity using wavefront shaping before the scatterer. The photoacoustic signal induced by an object placed behind the scattering medium serves as feedback to optimize the wavefront, enabling one order of magnitude enhancement of the photoacoustic amplitude. Using the enhanced optical intensity, we scan the object in two-dimensions before post-processing of the data to reconstruct the image. The temporal profile of the photoacoustic signal provides the information used to reconstruct the third dimension. |
| Databáze: | OpenAIRE |
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