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Photoacoustic imaging (PAI) is a powerful imaging modality that relies on the PA effect. PAI works on the principle of electromagnetic energy absorption by the exogenous contrast agents and/or endogenous molecules present in the biological…

光学 · 物理学 2020-12-16 Mohsin Zafar , Qiuyun Xu , Rayyan Manwar

Photoacoustic imaging (PAI) is a promising emerging imaging modality that enables spatially resolved imaging of optical tissue properties up to several centimeters deep in tissue, creating the potential for numerous exciting clinical…

医学物理 · 物理学 2021-04-15 Janek Gröhl , Melanie Schellenberg , Kris Dreher , Lena Maier-Hein

Photoacoustic imaging (PAI) is a novel modality in biomedical imaging technology that combines the rich optical contrast with the deep penetration of ultrasound. To date, PAI technology has found applications in various biomedical fields.…

医学物理 · 物理学 2023-09-07 Daohuai Jiang , Luyao Zhu , Shangqing Tong , Yuting Shen , Feng Gao , Fei Gao

Photoacoustic imaging (PAI) represents an innovative biomedical imaging modality that harnesses the advantages of optical resolution and acoustic penetration depth while ensuring enhanced safety. Despite its promising potential across a…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Lei Wang , Weiming Zeng , Kai Long , Hongyu Chen , Rongfeng Lan , Li Liu , Wai Ting Siok , Nizhuan Wang

Photoacoustic imaging (PAI) is an emerging biomedical imaging modality capable of providing both high contrast and high resolution of optical and UltraSound (US) imaging. When a short duration laser pulse illuminates the tissue as a target…

信号处理 · 电气工程与系统科学 2018-01-19 Moein Mozaffarzadeh , Ali Mahloojifar , Mahdi Orooji

A new development in photoacoustic (PA) imaging has been the use of compact, portable and low-cost laser diodes (LDs), but LD-based PA imaging suffers from low signal intensity recorded by the conventional transducers. A common method to…

图像与视频处理 · 电气工程与系统科学 2023-03-28 Vincent Vousten , Hamid Moradi , Emad M. Boctor , Septimiu E. Salcudean

Acousto-optics imaging (AOI) is a hybrid imaging modality that is capable of mapping the light fluence rate in deep tissue by local ultrasound modulation of the diffused photons. Since the intensity of the modulated photons is relatively…

光学 · 物理学 2022-03-28 Ahiad Refael Levi , Yoav Hazan , Aner Lev , Bruno Sfez , Amir Rosenthal

Photoacoustic image (PAI) quality improvement using a low frequency piezoelectric micromachined ultrasound transducer (PMUT) having the fundamental resonant frequency 1 MHz is being reported. Specifically, three different methods are…

Photoacoustic imaging (PAI) and ultrasound imaging (USI) are important biomedical imaging techniques, due to their unique and complementary advantages in tissue's structure and function visualization. In this Letter, we proposed a coaxial…

医学物理 · 物理学 2024-11-12 Yunhui Jiang , Fan Zhang , Yuwei Zheng , Ruixi Sun , Fei Gao

Photoacoustic(PA) imaging is a non-destructive and non-invasive technology for visualizing minute blood vessel structures in the body using ultrasonic sensors. In PA imaging, the image quality of a single-shot image is poor, and it is…

计算机视觉与模式识别 · 计算机科学 2025-02-11 Tatsuhiro Eguchi , Shumpei Takezaki , Mihoko Shimano , Takayuki Yagi , Ryoma Bise

Photoacoustic imaging (PAI) is an emerging functional and molecular imaging technology that has attracted much attention in the past decade. Recently, many researchers have used the Vantage Verasonics research system for simultaneous…

应用物理 · 物理学 2020-12-02 Karl Kratkiewicz , Rayyan Manwar , Yang Zhou , Moein Mozaffarzadeh , Kamran Avanaki

Photoacoustic imaging (PAI) uniquely combines the advantages of optical contrast with deep tissue penetration capability of acoustic waves, enabling imaging at depths of several centimeters. Conventional photoacoustic imaging methods have…

应用物理 · 物理学 2026-02-24 Xingchi Yan , Siyuan Song , Hanxun Jin

Photoacoustic imaging (PAI) is a non-invasive imaging modality that detects the ultrasound signal generated from tissue with light excitation. Photoacoustic computed tomography (PACT) uses unfocused large-area light to illuminate the target…

图像与视频处理 · 电气工程与系统科学 2022-04-13 Hengrong Lan , Jiali Gong , Fei Gao

The combination of microfluidic technology and optical fluids characterization techniques has been recently applied to produce lab-on-a-chip systems. In the present work, bringing together the imaging technique called photoacoustic imaging…

Photoacoustic imaging (PAI) is a promising medical imaging modality providing the spatial resolution of ultrasound (US) imaging and the contrast of pure optical imaging. For linear-array PAI, a beamformer has to be used as the…

医学物理 · 物理学 2018-02-15 Moein Mozaffarzadeh , Yan Yan , Mohammad Mehrmohammadi , Bahador Makkiabadi

Peri-implant inflammation in orthodontic mini-implant may lead to patient discomfort and treatment failure. This study aims to evaluate the effects of diode laser application on the health of mini-implant, preventing peri-implantitis and…

医学物理 · 物理学 2025-11-17 Jun Liu , Linlin Li , Xiaofei Sun , Qiang Zhang

Photoacoustic imaging (PAI) can image high-resolution structures of clinical interest such as vascularity in cancerous tumor monitoring. When imaging human subjects, geometric restrictions force limited-view data retrieval causing imaging…

图像与视频处理 · 电气工程与系统科学 2022-04-27 Rafael Orozco , Mathias Louboutin , Felix J. Herrmann

Photoacoustic (PA) imaging combines the high optical absorption contrast of optical imaging with the deep tissue penetration of ultrasound detection, offering great potential for functional imaging and disease diagnosis. However, current PA…

光学 · 物理学 2026-01-29 Daohuai Jiang , Xuanxuan Ye , Hengrong Lan , Xianzeng Zhang , Fei Gao

Photoacoustic imaging (PAI) has been applied to many biomedical applications over the past decades. However, the received PA signal usually suffers from poor signal-to-noise ratio (SNR). Conventional solution of employing higher-power…

信号处理 · 电气工程与系统科学 2023-07-26 Xinke Li , Peng Ge , Yuting Shen , Feng Gao , Fei Gao

Photoacoustic (PA) imaging of deep tissue tends to employ Q-switched lasers with high pulse energy to generate high optical fluence and therefore high PA signal. Compared to Q-switched lasers, pulsed laser diodes (PLDs) typically generate…

医学物理 · 物理学 2025-11-21 Maxim N. Cherkashin , Jan Laufer , Thomas Kirchner
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