Results 31 to 40 of about 19,521 (265)

Grey scale enhancement by a new self-made contrast agent in early cirrhotic stage of rabbit liver

BMC Gastroenterology, 2007
Background The development of new ultrasound contrast agents (UCAs) has become one of the most promising fields in ultrasound medicine. This paper evaluates a new self-made contrast agent enhancement effect developed to study the fibrotic stages of the ...
Zhang Yong, Cui Ji-Hong, Yin Ji-Kai, Duan Yun-You, Zhang Li, Cao Tie-Sheng   +5 more
doaj   +1 more source

Indocyanine green loaded graphene oxide for high-efficient photoacoustic tumor therapy [PDF]

Journal of Innovative Optical Health Sciences, 2016
Photoacoustic therapy, using the photoacoustic effect of agents for selectively killing tumor cells, has shown promising for treating tumor. Utilization of high optical absorption probes can help to effectively improve the photoacoustic therapy ...
Baoyun Yan, Huan Qin
doaj   +1 more source

Recent Advances in the Study of Gas Vesicle Proteins and Application of Gas Vesicles in Biomedical Research

Life, 2022
The formation of gas vesicles has been investigated in bacteria and haloarchaea for more than 50 years. These air-filled nanostructures allow cells to stay at a certain height optimal for growth in their watery environment. Several gvp genes are involved
Felicitas Pfeifer
doaj   +1 more source

Optical and Acoustical Dynamics of Microbubble Contrast Agents inside Neutrophils [PDF]

Biophysical Journal, 2001
Acoustically active microbubbles are used for contrast-enhanced ultrasound assessment of organ perfusion. In regions of inflammation, contrast agents are captured and phagocytosed by activated neutrophils adherent to the venular wall. Using direct optical observation with a high-speed camera and acoustical interrogation of individual bubbles and cells,
Dayton, Paul A., Chomas, James E., Lum, Aaron F.H., Allen, John S., Lindner, Jonathan R., Simon, Scott I., Ferrara, Kathy W.   +6 more
openaire   +2 more sources

Reconfigurable Magnetic Soft Microrobot for Acoustically Triggered Targeted Bacterial Sterilization

Advanced Functional Materials, EarlyView.
Reconfigurable magnetic soft microrobots integrate in situ‐grown piezoelectric zinc oxide nanorods that produce reactive oxygen species upon acoustic excitation. Combining magnetically guided transport with thermally induced planar reconfiguration, the microrobots achieve targeted delivery and enhanced bacterial sterilization through efficient on ...
Quan Gao, Fan Li, Jiajie Gao, Elric Zhang, Yingdong Su, Ni Qin, Hao Ye, Josep Puigmartí, Giuseppe Cantarella, Simone Schuerle, Jiang Wu, Bradley J. Nelson, Salvador Pané   +12 more
wiley   +1 more source

Small bowel adenocarcinoma of the jejunum detected by double contrast enhanced ultrasound: a case report of a novel ultrasound modality

Frontiers in Oncology
BackgroundSmall Bowel Adenocarcinoma (SBA) is rare, occult and life-threatening malignancy in digestive system. Given low incidence and nonspecific symptoms, SBA is frequently detected in later stages.
Shuang Wu, Huizhen Yu, Ying Liu, Hong Zhou, Yang Zhou   +4 more
doaj   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Acoustic Estimation of Resonance Frequency and Sonodestruction of SonoVue Microbubbles

Archives of Acoustics, 2015
Acoustic properties of ultrasound (US) contrast agent microbubbles (MB) highly influence sonoporation efficiency and intracellular drug and gene delivery. In this study we propose an acoustic method to monitor passive and excited MBs in a real time.
Rytis JURKONIS, Nerijus LAMANAUSKAS, Saulius SATKAUSKAS   +2 more
doaj   +1 more source

Integrative Approaches for DNA Sequence‐Controlled Functional Materials

Advanced Functional Materials, EarlyView.
DNA is emerging as a programmable building block for functional materials with applications in biomimicry, biochemical, and mechanical information processing. The integration of simulations, experiments, and machine learning is explored as a means to bridge DNA sequences with macroscopic material properties, highlighting current advances and providing ...
Aaron Gadzekpo, Ewa Anna Oprzeska‐Zingrebe, Mariana Kozlowska, Lennart Hilbert, Iliya D. Stoev   +4 more
wiley   +1 more source

Biodegradable Contrast Agents for Photoacoustic Imaging

Applied Sciences, 2018
Over the past twenty years, photoacoustics—also called optoacoustics—have been widely investigated and, in particular, extensively applied in biomedical imaging as an emerging modality.
Su Woong Yoo, Doyoung Jung, Jung-Joon Min, Hyungwoo Kim, Changho Lee   +4 more
doaj   +1 more source