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2021
Photoacoustic imaging (PAI) is an emerging imaging modality that shows great potential for preclinical research and clinical practice. As a hybrid technique, PAI uniquely combines the advantages of optical excitation and of acoustic detection. Optical excitation provides a rich contrast mechanism from either endogenous or exogenous chromophores ...
Lin, Li, Wang, Lihong V.
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Photoacoustic imaging (PAI) is an emerging imaging modality that shows great potential for preclinical research and clinical practice. As a hybrid technique, PAI uniquely combines the advantages of optical excitation and of acoustic detection. Optical excitation provides a rich contrast mechanism from either endogenous or exogenous chromophores ...
Lin, Li, Wang, Lihong V.
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Photoacoustic imaging for microcirculation
Microcirculation, 2022AbstractMicrocirculation facilitates the blood‐tissue exchange of nutrients and regulates blood perfusion. It is, therefore, essential in maintaining tissue health. Aberrations in microcirculation are potentially indicative of underlying cardiovascular and metabolic pathologies.
Shubham Mirg +4 more
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Photoacoustic imaging endoscope
2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2009We currently present a design concept for a photoacoustic imaging endoscope as well as some preliminary experimental results. The device is based on the generation of acoustic waves in tissue by short laser pulses and the sensing of these waves with a thin, optical Fabry-Pérot etalon.
Clay Sheaff +4 more
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Hybrid photoacoustic - ultrasound transmission parameter imaging in a miniature photoacoustic imager [PDF]
The Journal of the Acoustical Society of America, 2008 Photoacoustic imaging is based on detecting laser pulse induced ultrasound transients from absorbing structures in tissue. The technique combines the advantages of a high optical absorption exhibited by tumors for example with the high resolution possible with ultrasound.
Srirang Manohar +3 more
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Photoacoustic imaging demonstration
The Journal of the Acoustical Society of America, 2020Experiments [T. J. Allen and P. C. Beard, “High power visible light emitting diodes as pulsed excitation sources for biomedical photoacoustics,” Biomed. Opt. Express 7(4), 1260–1270 (2016)] describe the use of a visible light-emitting diode (LED) as an alternative to using a Q-switched Nd:YAG laser as a photoacoustic excitation (1 mJ pulse) source for ...
Murray S. Korman, Leah E. Burge
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SPIE Proceedings, 2010
Our group has concentrated on development of a 3D photoacoustic imaging system for biomedical imaging research. The technology employs a sparse parallel detection scheme and specialized reconstruction software to obtain 3D optical images using a single laser pulse.
Mark A. Anastasio +7 more
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Our group has concentrated on development of a 3D photoacoustic imaging system for biomedical imaging research. The technology employs a sparse parallel detection scheme and specialized reconstruction software to obtain 3D optical images using a single laser pulse.
Mark A. Anastasio +7 more
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Image reconstruction in intravascular photoacoustic imaging
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2011Intravascular photoacoustic (IVPA) imaging is a technique for visualizing atherosclerotic plaques with differential composition. Unlike conventional photoacoustic tomography scanning, where the scanning device rotates around the subject, the scanning aperture in IVPA imaging is enclosed within the imaged object.
Yae-Lin Sheu +3 more
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Differential-absorption photoacoustic imaging
Optics Letters, 2009We present differential-absorption photoacoustic imaging, which detects the difference between transient and ground-state absorption, for contrast enhancement based on suppressing undesired objects. Two tubes were imaged. One contains a Pt(II) octaethylporphine (PtOEP) dye solution and serves as an object of interest, while the other contains an IR-783
Janet F. Eary +5 more
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Subsurface imaging with photoacoustics
Applied Physics Letters, 1980We have performed thermal-wave imaging of subsurface features in a metal using, for the first time, piezoelectric detection. Photoacoustic magnitude and phase images are presented.
Gerd Busse, Allan Rosencwaig
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Intravascular ultrasound and photoacoustic imaging
2008 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2008There is a need for an imaging technique that can reliably identify and characterize the vulnerability of atherosclerotic plaques. Catheter-based intravascular ultrasound (IVUS) is one of the imaging tools of the clinical evaluation of atherosclerosis. However, histopathological information obtained with IVUS imaging is limited.
Shriram Sethuraman +8 more
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