You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither SPIE nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the SPIE website.
7 March 2006Ultrasonic attenuation correction in optoacoustic tomography
In this work, we continue to explore a method we have developed for modeling and correcting the effects of acoustic attenuation in optoacoustic tomography. We have shown previously that in the temporal frequency domain, the attenuated optoacoustic imaging equation is equivalent to an inhomogeneous Helmholtz equation with a complex wave number. We have also developed a numerical method for correcting for these attenuation effects simply by pre-processing of the one-dimensional time signal measured at each transducer location employed in the acquisition. We demonstrate through simulation studies that ignoring ultrasonic attenuation can lead to resolution degradation and distortion in reconstructed images because optoacoustic tomography relies on broadband detection and ultrasonic attenuation is frequency-dependent. We demonstrate that the proposed approach is able to compensate for the attenuation and improve the quality of the images. We also find that the effect of frequency-dependent attenuation remains significant even when narrow-band transducers, be they lowpass or bandpass, are used for detection.
Patrick J. La Rivière,Jin Zhang, andMark A. Anastasio
"Ultrasonic attenuation correction in optoacoustic tomography", Proc. SPIE 6086, Photons Plus Ultrasound: Imaging and Sensing 2006: The Seventh Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics, 60861I (7 March 2006); https://doi.org/10.1117/12.647673
The alert did not successfully save. Please try again later.
Patrick J. La Rivière, Jin Zhang, Mark A. Anastasio, "Ultrasonic attenuation correction in optoacoustic tomography," Proc. SPIE 6086, Photons Plus Ultrasound: Imaging and Sensing 2006: The Seventh Conference on Biomedical Thermoacoustics, Optoacoustics, and Acousto-optics, 60861I (7 March 2006); https://doi.org/10.1117/12.647673