Enhancing photoacoustic trace gas detection via a CNN-transformer denoising framework [0.03%]
基于CNN-变压器去噪框架的光声痕量气体检测增强技术
Chen Zhang,Yan Gao,Ruyue Cui et al.
Chen Zhang et al.
We present a novel approach for gas concentration measurement using a differential resonant photoacoustic cell combined with a deep learning-based signal denoising model. This method addresses the persistent challenge of noise interference ...
Optimizing image fidelity in a spherical array geometry for pulse-echo ultrasound and volumetric optoacoustic imaging [0.03%]
球形阵列几何中超声脉冲回波和体光学声成像图像保真度的优化
Cheng-Feng Tommy Chiang,Isaac Esteban,Xose-Luis Dean-Ben et al.
Cheng-Feng Tommy Chiang et al.
Spherical arrays are commonly used in volumetric optoacoustic tomography for optimal data acquisition. Yet, such a configuration poses challenges for integration with pulse-echo ultrasound used for image guidance, which relies on different ...
Magneto-photoacoustic coupling: A pathway to optical-resolution electrical conductivity imaging [0.03%]
磁光声耦合：光学分辨率电导成像途径
Songqing Xie,Zhuojun Xie,Shuai Na
Songqing Xie
Electrical conductivity is a critical biomarker for cellular activity and a fundamental parameter in material science. However, achieving label-free, contact-free conductivity measurements with optical-scale resolution remains a challenge. ...
All-optical in vivo photoacoustic tomography by adaptive multilayer acoustic backpropagation [0.03%]
自适应多层声波逆向传播的全光学体内光声层析成像技术
Taeil Yoon,Hakseok Ko,Jeongmyo Im et al.
Taeil Yoon et al.
Photoacoustic tomography (PAT) combines high optical contrast with deep acoustic penetration, making it valuable for biomedical imaging. However, all-optical systems often face challenges in measuring the acoustic wave-induced displacements...
Optoacoustic imaging in lower extremity revascularization: A novel technique to assess perioperative muscle perfusion [0.03%]
下肢重建手术中光学声成像技术评估围术期肌肉灌注的一项新技术
Tim Wittig,Birte Winther,Charlene Reichl et al.
Tim Wittig et al.
Objectives: This proof-of-concept study aimed to assess the feasibility of Multispectral Optoacoustic Tomography (MSOT) in evaluating changes in oxygenated hemoglobin (HbO2) levels in muscles of the lower limb before and ...
Conductance-photoacoustic spectroscopy for fast and concurrent sensing of hydrogen and hydrocarbons [0.03%]
导体-光声谱法快速同步检测氢气和碳氢化物
Ruobin Zhuang,Jianfeng He,Haoyang Lin et al.
Ruobin Zhuang et al.
Accurate and rapid detection of hydrogen and hydrocarbons is critical for safety and efficiency in modern energy, industrial, and environmental systems. However, selective and simultaneous quantification of these species remains a significa...
Towards bridging the synthetic-to-real gap in quantitative photoacoustic tomography via unsupervised domain adaptation [0.03%]
基于无监督领域适应的定量光声层析成像仿真实验鸿沟研究
Zeqi Wang,Wei Tao,Zhuang Zhang et al.
Zeqi Wang et al.
The difficulty of obtaining absorption coefficient annotations hinders the practical application of deep learning in quantitative photoacoustic tomography. While training on synthetic data is easy to implement, the synthetic-to-real domain ...
High-frequency (> 65 MHz) broadband transparent transducer with ultrathin gold electrode for dual-mode photoacoustic and laser-induced ultrasound microscopy [0.03%]
一种具有超薄金电极的高频率（> 65MHz）宽带透明换能器，用于双模式光声和激光诱导超声显微镜
Sunghun Park,Woongki Hong,Hyeongyu Park et al.
Sunghun Park et al.
For high-performance combined photoacoustic (PA) and Ultrasound (US) microscopy, precise coaxial alignment of the US and laser beams is essential. This can be realized using broadband transparent ultrasound transducers (TUTs). However, the ...
Max T Rietberg,Janek Gröhl,Thomas R Else et al.
Max T Rietberg et al.
Photoacoustic imaging (PAI) is rapidly moving from the laboratory to the clinic, increasing the need to understand confounders which might adversely affect patient care. Over the past five years, landmark studies have shown the clinical uti...
Reconstructing multiple initial pressure and speed of sound distributions simultaneously in photoacoustic tomography [0.03%]
基于光声层析成像的同时重建多组初始压力和声速分布
Miika Suhonen,Felix Lucka,Aki Pulkkinen et al.
Miika Suhonen et al.
Image reconstruction in photoacoustic tomography relies on an accurate knowledge of the speed of sound in the target. However, the speed of sound distribution is not generally known, which may result in artefacts in the reconstructed distri...