Slit-enabled linear-array photoacoustic tomography with near isotropic spatial resolution in three dimensions

2017 ◽  
Author(s):  
Yuehang Wang ◽  
Depeng Wang ◽  
Yumiao Zhang ◽  
Jumin Geng ◽  
Ryan Hubbell ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Linear Array ◽  
Three Dimensions ◽  
Photoacoustic Tomography ◽  
Isotropic Spatial Resolution

scholarly journals Slit-enabled linear-array photoacoustic tomography with near isotropic spatial resolution in three dimensions

2015 ◽  
Vol 41 (1) ◽  
pp. 127 ◽  
Author(s):  
Yuehang Wang ◽  
Depeng Wang ◽  
Yumiao Zhang ◽  
Jumin Geng ◽  
Jonathan F. Lovell ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Linear Array ◽  
Three Dimensions ◽  
Photoacoustic Tomography ◽  
Isotropic Spatial Resolution

scholarly journals Free‐running 3D whole heart myocardial T 1 mapping with isotropic spatial resolution

2019 ◽  
Vol 82 (4) ◽  
pp. 1331-1342 ◽  
Author(s):  
Haikun Qi ◽  
Olivier Jaubert ◽  
Aurelien Bustin ◽  
Gastao Cruz ◽  
Huijun Chen ◽  
...  
Keyword(s):  
Spatial Resolution ◽  
Isotropic Spatial Resolution ◽  
Free Running ◽  
Whole Heart

The researches on convolutional beamforming for linear-array photoacoustic tomography

2022 ◽  
Vol 186 ◽  
pp. 108441
Author(s):  
Xinkai Wu ◽  
Zhitao Luo ◽  
Sheng Wang ◽  
Hui Zhang
Keyword(s):  
Linear Array ◽  
Photoacoustic Tomography

Monte Carlo light transport-based blood vessel quantification using linear array photoacoustic tomography

2017 ◽  
Vol 15 (11) ◽  
pp. 111701 ◽  
Author(s):  
Xiangwei Lin Xiangwei Lin ◽  
Mingjian Sun Mingjian Sun ◽  
Naizhang Feng Naizhang Feng ◽  
Depeng Hu Depeng Hu ◽  
Yi Shen Yi Shen
Keyword(s):  
Monte Carlo ◽  
Blood Vessel ◽  
Linear Array ◽  
Light Transport ◽  
Photoacoustic Tomography

scholarly journals Damage progression from impact in layered glass modeled with peridynamics

2012 ◽  
Vol 2 (4) ◽  
Author(s):  
Florin Bobaru ◽  
Youn Ha ◽  
Wenke Hu
Keyword(s):  
Spatial Resolution ◽  
Damage Evolution ◽  
Dynamic Interaction ◽  
Stress Waves ◽  
Three Dimensions ◽  
Contact Conditions ◽  
Peridynamic Model ◽  
Simulation Results ◽  
Simple Contact ◽  
Computational Resources

AbstractDynamic fracture in brittle materials has been difficult to model and predict. Interfaces, such as those present in multi-layered glass systems, further complicate this problem. In this paper we use a simplified peridynamic model of a multi-layer glass system to simulate damage evolution under impact with a high-velocity projectile. The simulation results are compared with results from recently published experiments. Many of the damage morphologies reported in the experiments are captured by the peridynamic results. Some finer details seen in experiments and not replicated by the computational model due to limitations in available computational resources that limited the spatial resolution of the model, and to the simple contact conditions between the layers instead of the polyurethane bonding used in the experiments. The peridynamic model uncovers a fascinating time-evolution of damage and the dynamic interaction between the stress waves, propagating cracks, interfaces, and bending deformations, in three-dimensions.

scholarly journals Synthetic aperture-based linear-array photoacoustic tomography considering the aperture orientation effect

2018 ◽  
Vol 11 (04) ◽  
pp. 1850015 ◽  
Author(s):  
Xiangwei Lin ◽  
Jaesok Yu ◽  
Naizhang Feng ◽  
Mingjian Sun
Keyword(s):  
Linear Array ◽  
Great Influence ◽  
Image Resolution ◽  
Synthetic Aperture ◽  
Orientation Effect ◽  
Photoacoustic Tomography ◽  
Optimal Detection ◽  
Phantom Experiment ◽  
Full View ◽  
Array Transducer

The synthetic aperture-based linear-array photoacoustic tomography (PAT) was proposed to address the limited-view shortcomings of the single aperture, but the detection field of view (FOV) determined by the aperture orientation effect was not fully considered yet, leading to the limited-view observation and image resolution degradation. Herein, the aperture orientation effect was proposed from the theoretical model and then it was verified via both the numerical simulation and phantom experiment. Different orientations were enumerated sequentially in the simulation to approximate the ideal full-view case for the optimal detection FOV, considering the detection pattern of the linear-array transducer. As a result, the corresponding optimal aperture orientation was 60[Formula: see text] if the synthetic aperture was seamlessly established by three single linear arrays, where the overlapped detection pattern was optimized from the individual linear-array transducer at the adjacent positions. Therefore, the limited-view artifacts were minimized and the image resolution was enhanced in this aperture orientation. This study showed that the aperture orientation had great influence on the optimal detection FOV in the synthetic aperture configuration, where the full-view imaging quality and enhanced image resolution could be achieved.

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