Results 41 to 50 of about 560,191 (256)

4-D Photoacoustic Tomography [PDF]

open access: yesScientific Reports, 2013
Photoacoustic tomography (PAT) offers three-dimensional (3D) structural and functional imaging of living biological tissue with label-free, optical absorption contrast. These attributes lend PAT imaging to a wide variety of applications in clinical medicine and preclinical research.
Xiang, Liangzhong   +3 more
openaire   +2 more sources

On the speckle‐free nature of photoacoustic tomography [PDF]

open access: yesMedical Physics, 2009
Purpose:A long‐standing conundrum is why photoacoustic tomography (PAT) possesses the unique ability to produce images devoid of speckle artifacts while all other coherent imaging technologies do not.Methods:In this paper, we explain the inherent mechanism that suppresses speckle in PAT, and the analysis was validated by simulations based on an ...
Guo, Zijian, Li, Li, Wang, Lihong V.
openaire   +3 more sources

Quantitative analysis of a closed photoacoustic cell that uses a high compliance piezoelectric transducer [PDF]

open access: yes, 2005
A treatment of the operation of low-frequency closed photoacoustic cells is presented, which considers the compliance of various cell elements. The optimum detector, according to our predictions, has a sensor whose compliance is large compared to that
Johnson, Mark   +5 more
core   +1 more source

A Noise Reduction Method for Photoacoustic Imaging In Vivo Based on EMD and Conditional Mutual Information

open access: yesIEEE Photonics Journal, 2019
Photoacoustic tomography is a technique to reconstruct the image of light energy absorption distribution in tissues based on the detected photoacoustic signals. In recent years, this research field has been greatly developed, and its application range is
Meng Zhou   +4 more
doaj   +1 more source

Utilising the radiative transfer equation in quantitative photoacoustic tomography [PDF]

open access: yes, 2017
Quantitative photoacoustic tomography is an emerging imaging technique aimed at estimating optical parameters inside tissue from photoacoustic images. This optical parameter estimation problem is an ill-posed inverse problem, and thus it is sensitive to ...
Simon R. Arridge   +7 more
core   +2 more sources

Review of cost reduction methods in photoacoustic computed tomography

open access: yesPhotoacoustics, 2019
Photoacoustic Computed Tomography (PACT) is a major configuration of photoacoustic imaging, a hybrid noninvasive modality for both functional and molecular imaging.
Afreen Fatima   +8 more
doaj   +1 more source

Integrated system for ultrasonic, elasticity and photoacoustic imaging [PDF]

open access: yes, 2008
textBy integrating three complementary imaging techniques - ultrasound, elasticity and photoacoustic imaging, a hybrid imaging system utilizing an array transducer is proposed for various biomedical imaging applications including cancer detection ...
Park, Suhyun, 1977-
core   +1 more source

Progress of clinical translation of handheld and semi-handheld photoacoustic imaging

open access: yesPhotoacoustics, 2021
Photoacoustic imaging (PAI), featuring rich contrast, high spatial/temporal resolution and deep penetration, is one of the fastest-growing biomedical imaging technology over the last decade.
Qian Chen, Wei Qin, Weizhi Qi, Lei Xi
doaj   +1 more source

Boundary conditions in photoacoustic tomography [PDF]

open access: yes, 2006
Photoacoustic tomography has captured a significant amount of attention recently. Although several commercially available optical imaging modalities, including confocal microscopy, two-photon microscopy, and optical coherence tomography have been highly ...
Lihong V. Wang, Wang, Lihong V.
core   +1 more source

Deep Learning Enhanced Volumetric Photoacoustic Imaging of Vasculature in Human

open access: yesAdvanced Science, 2023
The development of high‐performance imaging processing algorithms is a core area of photoacoustic tomography. While various deep learning based image processing techniques have been developed in the area, their applications in 3D imaging are still ...
Wenhan Zheng   +6 more
doaj   +1 more source

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