Theoretical study of Acousto-optical coherence tomography using random phase jumps on US and light [PDF]
, 2011 Acousto-Optical Coherence Tomography (AOCT) is variant of Acousto Optic Imaging (called also ultrasonic modulation imaging) that makes possible to get z resolution with acoustic and optic Continuous Wave (CW) beams.
A. C. Boccara +38 more
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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.
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Three-Dimensional Contouring Control: A Task Polar Coordinate Frame Approach
IEEE Access, 2019 In order to characterize the surface quality of machined parts, researchers have proposed a family of coordinate transformation-based approaches to deal with the contour following problem, which alleviate the computational consumption of calculating the ...
Ran Shi, Yunjiang Lou
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Experimental investigation of inter-element isolation in a medical array transducer at various manufacturing stages [PDF]
, 2016 This work presents the experimental investigation of vibration maps of a linear array transducer with 192 piezoelements by means of a laser Doppler vibrometer at various manufacturing finishing steps in air and in water.
Bini, Fabiano +2 more
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Rotational-invariant speckle-scanning ultrasonography through thick bones
Scientific Reports, 2021 Ultrasonography is a major medical imaging technique that has been broadly applied in many disease diagnoses. However, due to strong aberration and scattering in the human skull, high-resolution transcranial ultrasonic imaging remains a grand challenge ...
Siyi Liang, Lidai Wang
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FEA-Based Ultrasonic Focusing Method in Anisotropic Media for Phased Array Systems
Applied Sciences, 2021 Traditional ultrasonic imaging methods have a low accuracy in the localization of defects in austenitic welds because the anisotropy and inhomogeneity of the welds cause distortion of the ultrasonic wave propagation paths in anisotropic media.
Seongin Moon +7 more
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Synthetic vascular ultrasound imaging through coupled fluid-structure interaction and ultrasound simulations [PDF]
, 2010 Although ultrasonic imaging is commonly applied in cardiovascular research and clinical practice, current blood flow and vessel wall imaging methods are still hampered by several limitations.
Degroote, Joris +4 more
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Nonlinear Ultrasonic Phased Array Imaging [PDF]
Physical Review Letters, 2014 This Letter reports a technique for the imaging of acoustic nonlinearity. By contrasting the energy of the diffuse field produced through the focusing of an ultrasonic array by delayed parallel element transmission with that produced by postprocessing of sequential transmission data, acoustic nonlinearity local to the focal point is measured. Spatially
Potter, J. N. +2 more
openaire +3 more sources
The Leap from Digitalization to Intelligentization of Medical Digital Ultrasonic Imaging Workstations [PDF]
Advanced Ultrasound in Diagnosis and Therapy, 2023 This paper begins with the medical digital ultrasonic imaging workstations' development history and stages of PACS (Picture Archiving and Communication Systems).
Yande Zhang, DBA, Yanjun Cheng, MBME, Yingxin Li, MCS, Shengli Li, MM
doaj
Correction of concentrated and distributed aberrations in medical ultrasound imaging [PDF]
, 1996 A method is presented for iterative correction of wave fields aberrated in a plane located at an arbitrary distance from an array transducer. The signals received from the transducer are processed by an inverse extrapolator in such a way that the output ...
Berkhoff, A.P., Thijssen, J.M.
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