Results 21 to 30 of about 174,201 (277)

Ultrasonic colour Doppler imaging [PDF]

Interface Focus, 2011
Ultrasonic colour Doppler is an imaging technique that combines anatomical information derived using ultrasonic pulse-echo techniques with velocity information derived using ultrasonic Doppler techniques to generate colour-coded maps of tissue velocity superimposed on grey-scale images of tissue anatomy. The most common use of the technique is to image
Evans, David H, Jensen, Jørgen Arendt, Nielsen, Michael Bachmann   +2 more
openaire   +4 more sources

Early Diagnosis of Abnormal Left Ventricular Systolic Functions of Rare Pathogenic Titin Mutation Gene Carriers in FHCM by Three-Dimensional Speckle Tracking Echocardiography Combined with Gene Detection

International Journal of Clinical Practice, 2022
Objective. This study aimed to explore the early diagnosis of abnormal left ventricular systolic function of rare pathogenic titin (TTN) mutation gene carriers in familial hypertrophic cardiomyopathy (FHCM) by three-dimensional speckle tracking ...
Xiang-hong Luo, Rui Zhu, Qian Chen, Pei-hong Shi, Li-sha Na   +4 more
doaj   +1 more source

Sound Field Modeling Method and Key Imaging Technology of an Ultrasonic Phased Array: A Review

Applied Sciences, 2022
An ultrasonic phased array consists of multiple ultrasonic probes arranged in a certain regular order, and the delay time of the excitation signal sent to each array element is controlled electronically.
Qian Xu, Haitao Wang
doaj   +1 more source

Laser Ultrasound Inspection Based on Wavelet Transform and Data Clustering for Defect Estimation in Metallic Samples [PDF]

, 2019
Laser-generated ultrasound is a modern non-destructive testing technique. It has been investigated over recent years as an alternative to classical ultrasonic methods, mainly in industrial maintenance and quality control procedures.
Cojocaru, Crina, Delgado Prieto, Miquel, Mohamed Selim, Hossameldin, Romeral Martínez, José Luis, Trull Silvestre, José Francisco   +4 more
core   +2 more sources

A Novel Relative Position Estimation Method for Capsule Robot Moving in Gastrointestinal Tract

Sensors, 2019
Recently, a variety of positioning and tracking methods have been proposed for capsule robots moving in the gastrointestinal (GI) tract to provide real-time unobstructed spatial pose results.
Min Wang, Qinyuan Shi, Shuang Song, Chao Hu, Max Q.-H. Meng   +4 more
doaj   +1 more source

Breast-Lesion Characterization using Textural Features of Quantitative Ultrasound Parametric Maps [PDF]

, 2017
© 2017 The Author(s). This study evaluated, for the first time, the efficacy of quantitative ultrasound (QUS) spectral parametric maps in conjunction with texture-analysis techniques to differentiate non-invasively benign versus malignant breast lesions.
A Ahmed, A Heindl, A König, A Sadeghi-Naini, A Sadeghi-Naini, A Sadeghi-Naini, A Sadeghi-Naini, A Sadeghi-Naini, A Sadeghi-Naini, AV Alvarenga, B Sigel, D Sengupta, E Feleppa, EJ Feleppa, EJ Feleppa, EJ Feleppa, EJ Feleppa, EJ Feleppa, F Davnall, FL Lizzi, FL Lizzi, FLL Lizzi, H Tadayyon, H Tadayyon, H Tadayyon, H Tadayyon, J Mamou, JPB O’Connor, K Polyak, KA Wear, KA Wear, KC Balaji, L Sannachi, LX Yao, M Vaidya, MJ Gerdes, ML Oelze, ML Oelze, ML Oelze, ML Oelze, ML Oelze, N Duric, N Sannomiya, R Natrajan, RJ Lavarello, RL Siegel, RM Haralick, S Chicklore, S Tan, T Cover, T Noritomi, TJ Larkin, V Goh, Y Labyed, Y Labyed, Y-Y Liao   +55 more
core   +2 more sources

Computers in ultrasonic imaging [PDF]

Journal of Digital Imaging, 1992
This article describes the role of computers and digital electronics in state-of-the-art diagnostic ultrasound scanners. An overview of the computational requirements is provided, and limits on color flow image frame rates are discussed. The new scanner architectures emerging may be used to extend current limitations of ultrasonography, making features
T J, Hall, S J, Rosenthal, M F, Insana, A W, Templeton   +3 more
openaire   +2 more sources

A local defect resonance for linear and nonlinear ultrasonic thermography [PDF]

, 2014
An efficient wave-defect interaction is the key to a high thermal response of flaws in ultrasonic thermography. To selectively enhance defect vibrations a concept of local defect resonance is developed and applied to ultrasonic activation of defects ...
Solodov, I., Rahammer, M., Busse, G.
core   +1 more source

Discrete Imaging Models for Three-Dimensional Optoacoustic Tomography using Radially Symmetric Expansion Functions [PDF]

, 2014
Optoacoustic tomography (OAT), also known as photoacoustic tomography, is an emerging computed biomedical imaging modality that exploits optical contrast and ultrasonic detection principles.
Er Oraevsky, Kun Wang, Mark A. Anastasio, Richard Su, Robert W. Schoonover, Senior Member   +5 more
core   +1 more source

Multi Spherical Wave Imaging Method Based on Ultrasonic Array

Sensors, 2022
The imaging range of traditional plane wave imaging is usually limited by the directivity of the plane wave. In this paper, a multi spherical wave imaging method based on an ultrasonic array is proposed, which radiates both compression and shear waves in
Zhi-Ying Liu, Ping Zhang, Bi-Xing Zhang, Wen Wang   +3 more
doaj   +1 more source