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| Â | Ultrasound Imaging and Tomography |
 | | The ultrasonic imaging technique developed here is based on the evidence that, for an ultrasonic frequency defined by the porous medium properties, the degree of attenuation of an ultrasonic signal through a porous material decreases with increasing permeability. | | | A Novel Technique of Ultrasonic Imaging of Smoldering Combustion | | | The results of applying the technique have furthered the understanding of two-dimensional smolder, especially in elucidating the controlling mechanisms leading to the transition from smoldering to flaming. |
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http://www.me.berkeley.edu/mcl/usound.html
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| Â | Algorithms Used In Military Radar Systems Have Potential To Improve Medical Ultrasonic Imaging |
| | By contrast, his proposed system for diagnostic ultrasonic imaging is based on a fundamental theory in optics that says that it is not necessary to create images through the conventional point-by-point method. | | | But Soumekh says the system may make its greatest contributions in medical ultrasonic imaging. | | | The most advanced commercial ultrasonic-imaging systems generate pictures by focusing the ultrasound beam point by point on a target region, a method that Soumekh says is prohibitively time-consuming. |
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http://www.sciencedaily.com/releases/1999/05/990506065805.htm
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| Â | Ultrasonic imaging of internal defects in composites |
| | The ultrasonic imaging technique for honeycomb-sandwich components must be capable of detecting all kinds of defects in skin and core not only for laboratory use, but also for field-inspections of 'real components' as well [7]. | | | This technique allows the possibility of generating ultrasonic broadband pulses with frequencies up to 120 MHz. | | | A real-time contrast enhancement and other forms of imaging processing give clear presentations of results. |
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http://www.ndt.net/article/wsho0597/hillger/hillger.htm
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| Â | Sensors - July 2002 - All Together Now: Ultrasonic and Optical Imaging |
| | Thirty years ago, engineers studying ultrasonic “views” of an object’s internal features thought of the images as akin to X-rays or perhaps related to other techniques, such as IR, that use some part of the electromagnetic spectrum. | | | Superposing an ultrasonic image onto an optical image of the same sample yields data on structural integrity that an inspector can readily interpret. | | | It turns out that the human visual cortex does not readily make sense of an image created by ultrasonic scanning. |
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http://www.sensorsmag.com/articles/0702/18/main.shtml
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| Â | Analysis and optimization of ultrasonic imaging methods for inhomogeneous structures |
| | Here is the list of known image processing methods investigated and employed in this thesis: Inverse filtering, Wiener filtering, Autoregressive spectral extrapolation (ASE), Split spectrum processing, Synthetic aperture focusing technique (SAFT), and Ultrasonic spectroscopy. | | | Two different techniques have been developed for detection and characterisation of the delaminations in thin multilayered composite materials using band-limited ultrasonic signals acquired by commercially available instrumentation. | | | The first technique exploits the modified L1 norm iterative deconvolution and allows us to distinguish between the disbonds at different depths. |
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http://www.ndt.net/article/wsho0597/linas/linas.htm
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| Â | An example Ellipsoidal Backprojection ultrasonic imaging machine—the Impulse 4D: |
| | This will allow viewing perspectives that were unobtainable before, and will substantially increase the clinical utility of ultrasonic imaging. | | | This echo replay-image reconstruction technique allows the physician, in the absence of the patient, to have almost as much control over the examination process as the ultrasonographer, and to reconstruct images that may not have been examined by the ultrasonographer. | | | And in contrast with presently available machines, these 2D images may be taken from any position or orientation within the body! |
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http://www.impulseimaging.net/imp3d.html
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| Â | Ultrasound Research Laboratory |
| | Development of high-resolution ultrasonic imaging techniques for detection and clinical assessment of cardiovascular disease. | | | Rapid quantitative assessment of myocardial perfusion: spectral analysis of myocardial contrast. | | | Strain rate imaging: New assessment of myocardial diastolic stiffness associated with acute ischemia. |
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http://www.mayo.edu/ultrasound/bibliography/bibliography.html
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| Â | IEEE UFFC Ultrasonics Home |
| | Focuses on the research and development of new theories and techniques for use in quantitative NDE. | | | Design and manufacture a wide range of ultrasonic transducers and solutions for industrial applications, NDT measurement, medical diagnosis and monitoring applications and medical therapy applications. | | | Manufactures veterinary products for professional use including ultrasonic Dopplers, animal blood pressure monitors and VacuPads surgical support devices. |
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http://www.ieee-uffc.org/ultrasonics/ul_links.html
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| Â | LFU Publications |
| | "A 'Sampled-Continuous Wave' Ultrasonic Technique and Spectrometer," J.G. Miller and D.I. Bolef, Review of Scientific Instruments, 40, 915-920, (1969). | | | "Detection of Ischemic Myocardium In Vivo Through the Chest Wall by Quantitative Ultrasonic Tissue Characterization," R.D. Cohen, Jack G. Mottley, J.G. Miller, Peter B. Kurnik, and B.E. Sobel, American Journal of Cardiology, 50, 838-843, (1982). | | | "Sampled-cw Study of 'Inhomogeneous' Ultrasonic Responses in Solids," J.G. Miller and D.I. Bolef, Journal of Applied Physics, 41, 2282-2293, (1970). |
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http://onemohr.wustl.edu/Publications/publications.html
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| Â | Patents for Ultrasonics - MEASURING AND TESTING - US Class 73 |
| | 5,487,389 Ultrasonic Doppler imager having an adaptive tissue rejection filter with enhanced tissue motion sensitivity | | | 5,433,112 Ultrasonic characterization of polymer melts under processing conditions | | | 5,507,185 Adaptive scanning technique for ultrasonic testing utilizing realtime lift-off detection |
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http://www.ndt.net/news/patents.htm
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| Â | ultrasonic imaging, ultrasonic images Engineering Web Search Results |
| | An improvement factor up to five is achieved when the ultrasonic images.. | | | The Infography about Ultrasonic Imaging in Medical Care | | | Non-invasive ultrasonic imaging is widely used in cardiovascular studies as well as clinical diagnostics.. |
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http://www.designinfo.com/Industrial/ultrasonic_imaging/ultrasonic_images
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| Â | The Infography about Ultrasonic Imaging in Medical Care |
| | The Infography about Ultrasonic Imaging in Medical Care | | | "The Infography about Ultrasonic Imaging in Medical Care" | | | The following sources are recommended by a professor whose research specialty is medical ultrasonic imaging. |
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http://www.infography.com/content/819911748552.html
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| Â | Home page - Spectrasonics Imaging - The Power of Sound at the Speed of Light |
| | Both technologies represent advances in Image Guided Therapy and Minimally Invasive Surgical Applications of Ultrasonic Energy, and offer the potential to provide significant improvements in the diagnosis and treatment for a wide variety of high incidence diseases. | | | High Intensity Focused Ultrasound (HIFU) is a noninvasive technique capable of selective destruction of tissue volumes within the body. | | | To deliver better, lower cost, less invasive ultrasonic medical tools through the commercialization of cutting-edge research and state of the art technology. |
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http://www.spectrasonics.com
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| Â | NDE Associates, Inc. - NDT in Non-Nuclear Power Generation: Pressure Vessels, Piping, Turbines |
| | In addition to remote field, ultrasonic IRIS technique can also be applied for inspection while the IRIS technique is more accurate, it is slow compared to remote field eddy current technique. | | | Velocity measurement technique should therefore be applied for verification of such damage(Birring, 1989). | | | Ultrasonic testing (UT) is the only method that may be applied without removal of the retaining ring, however, its detection sensitivity is limited. |
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http://www.nde.com/paper55.htm
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| Â | Thickness-Independent Ultrasonic Imaging (TIUI) - Home |
| | TIUI is an ultrasonic imaging method that allows more accurate nondestructive characterization of materials. | | | To learn more about this software, its capabilities and applications, and/or how to obtain a copy, please click on the TIUI links to the left. |
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http://www.lerc.nasa.gov/WWW/LPB/tiui/
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| Â | Ultrasonic NDT Journal |
| | Computer Tomography(CT) is used in several applications --- medicine, non-destructive testing/evaluation, astronomy and others to look inside objects and analyze internal structures. | | | Ultrasonic Pulse Echo Technique For Concrete Elements Using Synthetic Aperture [ A ] | | | Ultrasonic Testing (UT) is a widely used Nondestructive Testing (NDT) Method |
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http://www.ndt.net/ut0597.htm
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| Â | REAL-TIME DECONVOLUTION IN ULTRASONIC IMAGING SYSTEMS |
| | Under the assumption that the point spread function is known, we applied our restoration technique to both synthetic and real ultrasonic imaging data. | | | We address the problem of improving the lateral resolution of ultrasonic images by a regularization technique in the wavelet domain. | | | Moreover, experimental results show that the proposed method reduces also speckle artifacts, which generally are enhanced by the deconvolution. |
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http://www.ejournals.wspc.com.sg/jca/09/0903/S0218396X01001224.html
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| Â | Confocal ultrasonic imaging system (US5535751) |
| | Use of confocal techniques can permit enhanced resolution to be obtained compared with conventional ultrasonic imaging techniques. | | | Ultrasonic echography apparatus utilizing a digital device for forming channels, in the receiving mode | | | In a preferred arrangement the point of focus of each transducer is moved in three dimensions. |
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http://www.delphion.com/details?pn=US05535751__
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| Â | LookSmart - Article search for "Fetus / Ultrasonic imaging" |
| | We're always looking for ways to improve your search experience. | | | Three imaging technologies that are often used in medical diagnosis are ultrasound, computer-assisted tomography and magnetic resonance imaging. | | | A report issued by the National Institutes of Health Consensus Conference on Ultrasound Imaging in Pregnancy in 1984 did not recommend ultrasound testing... |
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http://www.findarticles.com/p/search?tb=art&qt=Fetus+/+Ultrasonic+imaging
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| Â | 3aPA6 Quantitative ultrasonic imaging for tissue characterization. |
| | This research is designed to lay the groundwork for exploiting the anisotropy of myocardial ultrasonic properties to achieve improved understanding of cardiac mechanical properties (elasticity and compliance) in normal and diseased hearts. | | | Ultrasonic tissue characterization is designed to complement two-dimensional echocardiography by providing information in addition to that derived from an assessment of tissue dimension and motion. | | | This presentation will illustrate relationships between physical acoustics and ultrasonic imaging for medical diagnosis. |
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http://www.auditory.org/asamtgs/asa93dnv/3aPA/3aPA6.html
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| Â | Elastography Journal Articles |
| | Ophir, J., Maklad, N.F. and Bigelow, R.H.: Ultrasonic attenuation measurements of in vivo human muscle. | | | Ophir, J. and Maklad, N.F.: Characterization of medical ultrasonic transceivers. | | | Narayana, P.A. and Ophir, J.: Spectral shifts of ultrasonic propagation: A study of theoretical and experimental models. |
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http://www.uth.tmc.edu/schools/med/rad/elasto/journalarticles.htm
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| Â | Ultrasonic imaging system for the observation of submerged objects |
| | Ultrasonic imaging system for the observation of submerged objects | | | The range of operation of the imaging device is no less than 50 m, the angle of aspect is 40 degrees with an angular resolution of 1-1.5 degrees. | | | The acoustic imaging device is intended for rescue, construction, and other works in water in conditions of poor optical visibility. |
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http://rao.akin.ru/e_comm6.htm
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| Â | Imperium Inc. Advanced Ultrasonic Imaging |
| | Together with its clinical partners and advisory boards, Imperium is under development on a full line of medical imaging products for clinical use with DAV™. | | | Our suite of Acoustocam™ imaging cameras* is focused on both imaging applications that current B-scan systems perform as well as expanded clinical uses that current ultrasound cannot satisfy. | | | Our initial clinical applications are related to real time noninvasive imaging of the woman's breast. |
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http://www.imperiuminc.com/medical.htm
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| Â | Frontiers in Ultrasonic Imaging for Cancer Diagnosis |
| | Ultrasonic imaging is now being widely used to diagnose cancer but current research has the potential to extend the utility of ultrasonic imaging in this application. | | | Available results demonstrate the promise of this research to extend ultrasonic technology to improved diagnosis as well as treatment monitoring in the area cancer. | | | The present use of ultrasonic imaging takes advantage of the nonionizing nature of low level acoustic waves, different mechanical properties of soft tissues, and advances in instrumentation. |
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http://www.brl.uiuc.edu/rot/waag.htm
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| Â | Obstetric Ultrasound Imaging |
| | For standard diagnostic ultrasound there are no known harmful effects to humans. | | | Ultrasound imaging, also called ultrasound scanning or sonography, is a method of obtaining images of internal organs by sending high-frequency sound waves into the body. | | | An example of the ultrasound equipment that may be used is shown above. |
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http://www.radiologyinfo.com/content/obstetric_ultrasound.htm
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| Â | A High Resolution Ultrasonic Imaging System for the Detection of Cervical Cancer |
| | A digital scanning system for the ultrasonic detection of cervical cancer has been developed. | | | A High Resolution Ultrasonic Imaging System for the Detection of Cervical Cancer | | | In this mode use is being made of residual focussing to obtain a high depth-independent resolution and the resulting high resolution image is analyzed by linear Radon transformation for angle dependent information. |
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http://wwwak.tn.tudelft.nl/~maurits/medical.html
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| Â | Ultrasonic imaging |
| | The existing state of knowledge of the underlying echo formation process and the associated attenuation processes are reviewed and the current status of the pulse-echo imaging technique and its applications are illustrated. | | | The majority of practical imaging systems in use today are based on the pulse-echo approach, and current technology is moving away from simple outlining of major echo-producing interfaces and towards more detailed imaging of fine structure of organs and tissues, in a grey-scale display format. |
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http://stacks.iop.org/0022-3735/9/153
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| Â | National Cancer Institute - CIP Home |
| | The mission of the Cancer Imaging Program, National Cancer Institute, is to promote and support: Cancer-related basic, translational and clinical research in imaging sciences and technology, and integration and application of these imaging discoveries and developments to the understanding of cancer biology and to the clinical management of cancer and cancer risk. | | | View resources on the basics of cancer imaging and locate cancer imaging trials. | | | Access detailed information on open and closed funding opportunities, grant mechanisms, and application guidelines. |
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http://cancer.gov/bip/USRpt.htm
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| Â | The Mathematical Physics of Ultrasonic Imaging |
| | Although quartz is the classic piezoelectric material, lead zirconate titanate (called PZT) is the preferred material for ultrasonic transducers. | | | Before being passed to the imaging part of the circuit, the signals are received and amplified by a receiver tuned to the frequency of the ultrasound being used (usually in the MHz range), with deeper (and so later) echoes being amplified by a greater factor to prevent loss of detail. | | | The drop in note of an ambulance siren as it passes by is the most common everyday example. |
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http://mysite.freeserve.com/Donal_Hurley/ultrasnd.html
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| Â | Innovative Ultrasonic Imaging Method Wins R&D 100 Award |
| | Using ultrasonic imaging systems is one approach to nondestructive evaluation of just-made, high-tech parts. | | | Sonix, an established manufacturer of ultrasonic imaging systems used worldwide for microelectronics, materials research, and commercial nondestructive evaluation, has incorporated this new system into several of their commercial ultrasonic imaging systems. | | | Currently, in cases where extremely rigid quality control is required, parts that will be ultrasonically scanned must be precision machined to eliminate any superimposing effect of thickness variations present in the ultrasonic image. |
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http://www.lerc.nasa.gov/WWW/RT1996/9400/9400r1.htm
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| Â | Design and analysis of estimators for multicarrier modulation and ultrasonic imaging |
| | This can be very useful, since the echo from an arbitrary surface can be modelled as a sum of the echoes from the individual points making up the surface. | | | The problems considered in ultrasonic imaging are system identification and time-delay estimation. | | | For instance, synchronization and channel estimation in communication systems correspond to time-delay estimation and system identification in ultrasonic imaging. |
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http://epubl.luth.se/avslutade/0348-8373/205
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| Â | Surface displacement imaging by interferometry with a light emitting diode. Simulations of circular 2D phase-array ... |
| | This study was motivated by the recent demonstration of micromachining of high-density circular as well as linear reticulated 2D phase-array transducers, to achieve real-time high-resolution completely electronic steerable volumetric medical noninvasive ultrasound imaging. | | | It is predicted that ultrasound imagers based on circular 2D phase-array transducers will out perform the other architectures for several medical applications. | | | We present an imaging technique to measure static surface displacements of electronic components. |
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http://twinpharm.com/ref-electronic/electronic-research-abs4.522.html
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| Â | sound: Characteristics of Sound Waves |
| | Sounds are generally audible to the human ear if their frequency (number of vibrations per second) lies between 20 and 20,000 vibrations per second, but the range varies considerably with the individual. | | | Sound waves with frequencies less than those of audible waves are called subsonic; those with frequencies above the audible range are called ultrasonic (see | | | A sound wave is usually represented graphically by a wavy, horizontal line; the upper part of the wave (the crest) indicates a condensation and the lower part (the trough) indicates a rarefaction. |
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http://www.infoplease.com/ce6/sci/A0861183.html
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| Â | BocaNews.com |
| | Glenn’s most recent patent is for a variable focus technique and apparatus to facilitate the ability of high-quality, inexpensive and portable ultrasonic imaging equipment for medical applications. | | | By taking advantage of the computing power of a personal computer, it will make possible inexpensive ultrasound scanners that can be used in a doctor’s office as well as by medical technicians using telemedicine facilities for remote diagnosis. | | | FAU’s Glenn has received numerous awards for his work, including a television Emmy in 1978 for his digital noise reducer. |
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http://www.bocanews.com/index.php?src=news&prid=8326&category=LOCAL%20NEWS
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| Â | C- and D-Weighted Ultrasonic Imaging Using the Translating Apertures Algorithm |
| | Spatially localized, statistically reliable angular scatter measurements will enable a broad range of angular scatter imaging techniques. | | | Although diagnostically useful, these systems fail to exploit the information available in components of the sound field scattered in other directions. | | | C- and d-weighted imaging may ultimately be applied clinically to identify calcification in atherosclerotic plaques and breast tumors. |
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http://www.ieee-uffc.org/tr/Toc/abs/01/t0120452.htm
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| Â | Improved Ultrasonic Imaging of Microscopic Devices |
| | In C-scan acoustic microscopy as it has been practiced until now, the pulse echo from an area of interest is gate-peak-detected to produce the ultrasonic image of that area. | | | Advances in time gating of ultrasonic signals in scanning acoustic microscopes have been proposed to enable detailed nondestructive examination of bonds and other interfaces deep within the interiors of such micromachined objects as high-density integrated electronic circuits and microelectromechanical systems. | | | When the detection gate interval is set to encompass the entire pulse envelope, the depth resolution of the image is compromised because of the superposition of pulse echoes mentioned above. |
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http://www.nasatech.com/Briefs/June99/GSC14092.html
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| Â | Ultrasonic imaging of aortic atheroma -- DE BELDER 79 (2): 111 -- Heart |
| | The study of embolism in the cerebral and peripheral circulation requires imaging methods that reveal pathology in some part | | | A number of ultrasonically derived classifications of aortic atheroma has been described based on the thickness of aortic | | | In conclusion, the development of ultrasonic imaging methods has revealed that atherosclerotic debris within the aorta is |
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http://www.heartjnl.com/cgi/content/full/79/2/111
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| Â | Ultrasonic Transducers and Imaging Arrays; Piezoelectric Ceramics and Composites; Piezo Innovative Engineering |
| | From advanced piezoelectric ceramics that detect flaws in jet engine components to custom ultrasonic medical arrays that create images from within a human heart, the Keramos and Etalon divisions of Piezo Technologies develop advanced piezoceramics and custom-manufacture integrated ultrasonic transducers and devices. | | | Piezo Technologies provides complete ultrasonic sensor and imaging solutions for applications and industries such as: | | | K700 is a fine grain ceramic without the compromises; K750 is the most advanced Diagnostic Medical Ultrasound Imaging material available. |
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http://www.piezotechnologies.com/
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| Â | N93-037; N95-083 - Multilayer 2D ultrasonic Imaging Array Transducers for Three Dimensional Undersea Imaging ... |
| | These materials are used in 3-dimensional ultrasonic imaging including medical diagnostics, nondestructive testing, and undersea surveying and in sonar systems used for detection, identification and classification of ships, objects, and mines. | | | Materials Systems, Inc. (MSI) has developed an improved high volume injection molding manufacturing process that greatly reduces the expense of producing these materials in commercial quantities. | | | N93-037; N95-083 - Multilayer 2D ultrasonic Imaging Array Transducers for Three Dimensional Undersea Imaging Applications - Materials Systems, Inc. - Phase III Success Story |
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http://www.navysbir.brtrc.com/successstories/matsysp3.html
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| Â | Ultrasonic imaging |
| | In the thirty years since US imaging became technically feasible, rapid progress is very recent and has occurred in the fields of obstetrics, cancer diagnostics and heart diagnostics. | | | The advantages of US compared with X-ray methods are discussed and the two computerised methods of producing pulse-echo images by transducer scanning are described. |
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http://stacks.iop.org/0031-9120/13/97
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| Â | NDT Systems: ultrasonic imaging systems - portable |
| | With the PortaScan Series Data Acquisition and Imaging Systems you can easily detect and quantify most unseen potential hazards before they become problems. | | | Hidden corrosion and defects can cause serious problems and is responsible for millions of dollars annually in cost of replacement infrastructure and lost production, and is a dangerous threat to safety and the environment. | | | Just recall the test set up from the built in Quantum ultrasonic instrument, slip the appropriate transducer and insert into the holder and begin testing. |
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http://www.ndtsystems.com/Products/Imaging_Systems/imaging_systems.html
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| Â | Imperium Inc. Advanced Ultrasonic Imaging |
| | The Distribution Integrator relationship allows for product discounts based on sales. | | | The Imperium Distribution Integrator relationship is for companies who have the ability to sell, design, build, install and support customized Ultrasonic Inspection Systems. | | | The OEM relationship requires the Business Partner to make royalty payments, maintain sales minimums and provide installation and support. |
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http://imperiuminc.com/businesspartner.htm
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| Â | Robotics Institute: Measurement Issues in Quantitative Ultrasonic Imaging |
| | Ultrasonic imaging of "flesh and blood" is vulnerable to the natural variability of these media: the speed of sound is not known, not constant, and not amenable to calibration using simply shaped manufactured samples. | | | When images of high dimensional accuracy are needed, as for image-guided surgery, the "average" or "typical" values used in diagnostic ultrasound may not be good enough. | | | Robotics Institute: Measurement Issues in Quantitative Ultrasonic Imaging |
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http://www.ri.cmu.edu/pubs/pub_620_text.html
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| Â | - Medicine - What's Been Published |
| | Imaging anatomy of the newborn / Ernst Richter, Werner Lierse ; translated and edited by Alan E. Oestreich ; [illustrations, Roland Helmus, Marianne Lèuck]. |
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http://www.pitbossannie.com/rps-r-ultrasonic-imaging.html
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