Results 51 to 60 of about 7,225,697 (246)

Diffuse field full matrix capture for near surface ultrasonic imaging

Ultrasonics, 2018
This article reports a technique for near‐surface ultrasonic array imaging. Information equivalent to an undelayed full matrix of inter‐element responses is produced through cross‐correlation of a later time diffuse full matrix.
J. Potter, P. Wilcox, A. Croxford
semanticscholar   +1 more source

Flextensional ultrasonic piezoelectric micro-motor [PDF]

, 2006
This paper presents the experimental design, construction, and operational characteristics of a new type of standing wave piezoelectric ultrasonic micro-motor.
Leinvuo, Joni T., Wilson, Stephen A., Whatmore, Roger W., Cain, Markys G.   +3 more
core   +1 more source

Performance evaluation of ultrasonic Nakagami image in tissue characterization

, 2009
[[abstract]]©2008 Elsevier - Conventional ultrasonic B-mode images qualitatively describe tissue structures but are unsuitable for quantitative analyses of scatterer properties.
Tsui PH;Yeh CK;Chang CC;Chen WS, Tsui, Po-Hsiang;Yeh, Chih-Kuang;Chang, Chien-Cheng;Chen, Wen-Shiang   +1 more
core   +2 more sources

Acceleration analysis and optimal design of a 3-degree-of-freedom co-axis parallel manipulator for pick-and-place applications

Advances in Mechanical Engineering, 2018
Robot acceleration is the bottleneck for high-speed pick-and-place operations. In this article, the extreme acceleration at null velocity is proposed to characterize the acceleration capability for a planar parallel manipulator having a common actuated ...
Bin Liao, Yunjiang Lou, Zhibin Li
doaj   +1 more source

Stretchable ultrasonic transducer arrays for three-dimensional imaging on complex surfaces

Science Advances, 2018
Ultrasound adds the third dimension to wearable sensors. Ultrasonic imaging has been implemented as a powerful tool for noninvasive subsurface inspections of both structural and biological media.
Hongjie Hu, Xuan Zhu, Chonghe Wang, Lin Zhang, Xiaoshi Li, Seunghyun Lee, Zhenlong Huang, Ruimin Chen, Zeyu Chen, Chunfeng Wang, Yue Gu, Yimu Chen, Yusheng Lei, Tianjiao Zhang, NamHeon Kim, Yuxuan Guo, Yue Teng, Wenbo Zhou, Yang Li, Akihiro Nomoto, S. Sternini, Qifa Zhou, M. Pharr, F. D. di Scalea, Sheng Xu   +24 more
semanticscholar   +1 more source

Multimodal evidence chain of iron overload, inflammation, and dysfunction: an integrated predictive model of early cardiac injury in pediatric transfusion-dependent β-thalassemia

Frontiers in Cardiovascular Medicine
IntroductionDespite standardized transfusion and chelation therapy, children with transfusion-dependent β-thalassemia (TDT) remain at high risk for cardiac dysfunction due to iron overload.
Panyan Zhou, Caili Li, Xiaomei Gao, Caifen Ye, Mufang Huang, Heng Zhang   +5 more
doaj   +1 more source

PMN-PT/Epoxy 1-3 composite based ultrasonic transducer for dual-modality photoacoustic and ultrasound endoscopy

Photoacoustics, 2019
Endoscopic dual-modality photoacoustic (PA) and ultrasound (US) imaging has the capability of providing morphology and molecular information simultaneously.
Yan Li, Gengxi Lu, Jason J. Chen, Joseph C. Jing, Tiancheng Huo, Ruimin Chen, Laiming Jiang, Qifa Zhou, Zhongping Chen   +8 more
doaj   +1 more source

The Green Synthesis of Reduced Graphene Oxide Using Ellagic Acid: Improving the Contrast-Enhancing Effect of Microbubbles in Ultrasound

Molecules, 2023
There is an urgent need to realize precise clinical ultrasound with ultrasound contrast agents that provide high echo intensity and mechanical index tolerance.
Qiwei Cheng, Yuzhou Wang, Qi Zhou, Shaobo Duan, Beibei Zhang, Yaqiong Li, Lianzhong Zhang   +6 more
doaj   +1 more source

Intravascular ultrasonic imaging.

Texas Heart Institute journal, 1990
Because conventional imaging methods are inadequate for evaluating human coronary arteries in vivo, an intravascular ultrasonic imaging catheter was developed that allows the arterial wall to be studied in cross-section from within the artery. The catheter incorporates a mechanically rotating 20-MHz transducer, which is designed so that the ringdown ...
Tobis, JM, Mahon, D, Moriuchi, M, Mallery, JA, Lehmann, K, Griffith, J, Gessert, J, Zalesky, P, McRae, M, Dwyer, ML, Henry, WL   +10 more
openaire   +3 more sources

Multimodal microscopy using 'half and half' contact mode and ultrasonic force microscopy [PDF]

Advances in the design and fabrication of multifunctional nanostructured materials require characterization techniques capable of simultaneously mapping multiple material properties with nanoscale resolution.
Wilson, Neil R., Kinloch, Ian A., Edwards, R. S. (Rachel S.), Young, Robert J. (Robert Joseph), Skilbeck, Mark, Cao, Guangwen, Marsden, Alexander J.   +6 more
core   +1 more source