Results 71 to 80 of about 5,293,624 (249)

An experimental and theoretical approach to the study of the photoacoustic signal produced by cancer cells

AIP Advances, 2012
The distinctive spectral absorption characteristics of cancer cells make photoacoustic techniques useful for detection in vitro and in vivo. Here we report on our evaluation of the photoacoustic signal produced by a series of monolayers of different cell
Rafael Pérez Solano, Francisco I. Ramirez-Perez, Jorge A. Castorena-Gonzalez, Edgar Alvarado Anell, Gerardo Gutiérrez-Juárez, Luis Polo-Parada   +5 more
doaj   +1 more source

Photoacoustic Imaging in Oxygen Detection

Applied Sciences, 2017
Oxygen level, including blood oxygen saturation (sO2) and tissue oxygen partial pressure (pO2), are crucial physiological parameters in life science. This paper reviews the importance of these two parameters and the detection methods for them, focusing ...
Fei Cao, Zhihai Qiu, Huanhao Li, Puxiang Lai   +3 more
doaj   +1 more source

Intelligent Micro/Nanorobots for Targeted Interventional Therapy: From Bench to Clinic

Advanced Robotics Research, EarlyView.
Zirui Zhang et al. reviewed the application and challenges of mobile nanomachines in interventional therapy. By converting exogenous energy, including chemical, magnetic, optical, and ultrasonic sources, into mechanical forces, micro/nanorobots (MNRs) enable precise actuation at unprecedented scales. Evolving far beyond traditional drug delivery, these
Zirui Zhang, Yu Dong, Yongsheng Du, Rui Gao, Lin Zhang, Fei Tong   +5 more
wiley   +1 more source

Recent advances in photoacoustic blind source spectral unmixing approaches and the enhanced detection of endogenous tissue chromophores

Frontiers in Signal Processing, 2022
Recently, the development of learning-based algorithms has shown a crucial role to extract features of vital importance from multi-spectral photoacoustic imaging.
Valeria Grasso, Valeria Grasso, Hafiz Wajahat Hassan, Peyman Mirtaheri, Regine Willumeit-Rӧmer, Regine Willumeit-Rӧmer, Jithin Jose   +6 more
doaj   +1 more source

Engineering Microbial Particles for Next‐Generation Biomedical Platforms

Advanced Science, EarlyView.
Microbe‐derived particles (MDPs), which include extracellular vesicles, outer membrane vesicles, inclusion bodies, polysaccharide particles, and virus‐like particles, represent a rapidly expanding category of bioinspired nanomaterials. With their natural origin, intrinsic biocompatibility, and highly programmable functionality, MDPs serve as a ...
Yuting Li, Yunjie Lu, Ziyan Huang, Jianjiang Chen, Yanbin Liu, Lei Qin, Chao Wang, Yumin Wu   +7 more
wiley   +1 more source

An Inter-Comparison of Instruments Measuring Black Carbon Content of Soot Particles [PDF]

, 2007
Inter-comparison studies of well-characterized fractal soot particles were conducted using the following four instruments: Aerosol Mass Spectrometer-Scanning Mobility Particle Sizer (AMS-SMPS), Single Particle Soot Photometer (SP2), Multi-Angle ...
John T. Jayne, David W. Fahey, Gregory L. Kok, William P. Arnott, Schwarz, Joshua P., Worsnop, Douglas R., Chakrabarty, Rajan K., Andreas Petzold, Rajan K. Chakrabarty, Onasch, Timothy B., Hans Moosmüller, Slowik, Jay G., Manjula R. Canagaratna, Joshua P. Schwarz, Arnott, William P., Kok, Gregory L., Han, Jeong-Ho, Paul Davidovits, Jayne, John T., Williams, Leah R., Ru-Shan Gao, Jay G. Slowik, Leah R. Williams, Moosmuller, Hans, Davidovits, Paul, Canagaratna, Manjula R., Petzold, Andreas, Jeong-Ho Han, Gao, Ru-Shan, Cross, Eben S., Fahey, DavidW., Eben S. Cross, Timothy B. Onasch, Douglas R. Worsnop   +33 more
core   +1 more source

Multi-gas photoacoustic sensor using multi-mode demodulation

Photoacoustics
Modulation technology is the necessary means for generating periodic acoustic waves in photoacoustic gas detection, primarily including intensity modulation and wavelength modulation.
Mu Liang, Mingqi Jiao, Mingyang Feng, Pengbo Chen, Yang Gao, Yingying Qiao, Lei Li, Chongxin Shan   +7 more
doaj   +1 more source

Deep Learning Network‐Tailored Microenvironment Matching of 4D Bioprinting Bioactive Scaffolds for Bone Regeneration

Advanced Science, EarlyView.
A DLN dataset was built to analyze MABS composition versus in vitro/in vivo osteogenesis and angiogenesis. An MLP neural network, taking BG morphological parameters as input, extracts bioactive features from these datasets. A rabbit tibial defect model then validates 4D‐printed MABS for adaptability and bone regeneration in critical defects.
Xiongjie Liang, Yuechi Zhang, Weifeng Hu, Shiyan Lv, Fan Jia, Yan Zhang, Feng Wu, Changjiang Yang, Guanqi Zhen, Jinglong Yan, Xu Cui, Wei Zhao, Guanghua Chen   +12 more
wiley   +1 more source

Towards Clinical Translation of LED-Based Photoacoustic Imaging: A Review

Sensors, 2020
Photoacoustic imaging, with the capability to provide simultaneous structural, functional, and molecular information, is one of the fastest growing biomedical imaging modalities of recent times.
Yunhao Zhu, Ting Feng, Qian Cheng, Xueding Wang, Sidan Du, Naoto Sato, Jie Yuan, Mithun Kuniyil Ajith Singh   +7 more
doaj   +1 more source

Arterial Blood‐Mediated Deep‐Tissue Photoacoustic Oximetry

Advanced Science, EarlyView.
The arterial prior method (APM+) for photoacoustic oximetry is introduced, which leverages the high arterial blood oxygenation to calibrate the fluence at the artery and estimate the oxygenation of the surrounding tissue, thus circumventing the spectral coloring problem. APM+’s accuracy and consistency are shown in a series of phantom and in vivo human
Karteekeya Sastry, Junhao Zhu, Joshua Olick‐Gibson, Li Lin, Lei Li, Jigmi Basumatary, Yang Zhang, Lihong V. Wang   +7 more
wiley   +1 more source