Found inside – Page 1362008;87—107. active sound wave generator and a passive transducer that 10_ ... an acquisition hardware and reconstruction application that produces images ... Found inside – Page 2Sound Wave Transmission Impulse Radar Radar waves reside in the microwave portion of the ... can be used to generate highly detailed images of materials . Found inside – Page 1-41The general principles of sound waves are utilized to create ultrasound images. High frequency sound waves are transmitted into the body. As the sound waves ... Found inside – Page 149The sound waves could also be attenuated by fat and bowel gas. ... with advanced computing it could be used to generate real-time volumetric images. Found inside – Page 5Ultrasound makes use of sound waves instead of ionizing emission. ... hit denser surfaces in the body and that is used to generate an image for prognosis. Found inside – Page 70If the sound waves travel easily through uniform substances (e.g. water, oil, urine), no echoes generate. Ultrasound image seen on the screen is therefore ... Found inside – Page 6Pulsed Sound Waves When a continuous sound wave (constant tone) is emitted, there is no way to calculate the travel time of the sound. To generate an image, it is necessary to transmit the sound in pulses of brief duration. ... The selection of a transducer for a particular imaging application is guided by its characteristic field of view and the way in which the sound beam can be focused and directed. Found inside – Page 14... combined to generate an image. Thus, an ultrasound transducer works both as a speaker (generating sound waves) and a microphone (receiving sound waves). Found inside – Page 383The acoustic microscope is a relatively new and little used tool. It employs high frequency sound waves, much like Sonar, to produce images with resolution ... Found inside – Page 127The ultrasound image displayed on the monitor is generated by software processing of sound waves reflected back from organs, fluids, and tissue interfaces ... Found insideThis open access book gives a complete and comprehensive introduction to the fields of medical imaging systems, as designed for a broad range of applications. Found inside – Page 26acoustic array 26 acoustic image Acoustical Engineering Acoustical ... for a sound transmitter or re- ence . the measurement of such sound waves as a means ... Found insideX2, factor (III) the value of the area below the waveform during systole and ... function calculation is performed on the heart-sound signal to generate a ... Found inside – Page 19Sound is produced when mechanical energy travels through matter as a wave, ... The amplitude of reflected energy is used to generate ultrasound images. Found inside – Page 122Frequency refers to the time between emissions of sound waves. ... frequencies near simultaneously to generate the most useful real-time US image by ... Found inside – Page 13Ultrasound uses the deflection of sound waves to generate images. The ultrasound probe is composed of piezoelectric crystals that emit an ultrasonic sound ... Found inside – Page 187Compared with the image-projection methods using lenses, orifice plates, ... The aim of acoustic holography is to produce by means of acoustic waves a ... Found inside – Page 1329G09b 9/08 ; H04n 7/18 Claims priority , application Japan , May 13 ... system or other image generator . faces of a metal tape to make a laminate tape . Found inside – Page 3The information is converted into digital data and processed by a computer to generate a cross-sectional ultrasound image. Sound waves can be deflected, ... Found inside – Page 234Sonography is a technique based on sound waves that acquires images in real time ... Diagnostic ultrasonography (or sonography), the clinical application of ... Found inside – Page 332Solid structures that strongly reflect and attenuate sound waves appear as ... Clinical Application Tissues are described as isoechoic when similar in ... Found inside – Page 29Sound waves are produced by applying a voltage across a piezoelectric crystal ... return to the transducer and are used to generate the ultrasound image . Found insideThe returning sound waves are transformed into a gray-scale image in real time. ... Low-frequency transducers (1 to 3.5 MHz) generate lower-quality images ... Found inside – Page 56The sound wave can only generate diffraction gratings that redirect the incident beam but ... Used simply as is, AOMs would not be able to form a 3D image. Found inside – Page 14Period The image produced by an ultrasound machine Fig. 2.2 Characteristics of a sound wave: the amplitude of the wave is a function of the acoustical power ... Found inside – Page 6Eyes can capture both still and moving pictures and ears can sense sound waves lying within the audio range. Objects illuminated by visible light generate ... Found inside – Page 12Ultrasound waves travel through this to give a picture of what lies inside ... scientists had been investigating the use of high-frequency sound waves to ... Found inside – Page 3243128–734 a processor , responsive to said complexity value , to generate a 2 Claims ... beam of sound waves which are reflected off said surface , said sound ... Found inside – Page 151“Marine seismic data acquisition and processing generate an image ... the vessel 10 also drags a sound source 20 configured to generate a seismic wave 22a. Found inside – Page 4If the fractured portion of sound wave is deflected as a result of striking ... produce the pattern of echoes that are then deciphered to generate an image. Found inside... these waves with more sophisticated algorithms to generate visual images ... further developed the application of Doppler principles to existing Bmode ... Found inside – Page 433Another important application of sound is the technique of ultrasonic imaging. This technique uses sound waves to obtain images inside a material. Found inside – Page 20-39ocean surface ; frequency - dependent sound speed deviations of tens of meters per second ... or elastic waves to study the solid Earth beneath the oceans . Found inside – Page 44High frequency sound waves, ranging from 1-20 MHz, are employed to generate cross-sectional images of the human body. The ultrasound transducer, which ... Found inside – Page 21The vibrating crystals, also known as piezoelectric elements, generate ultrasonic waves that are transmitted to tissues. Reflected sound waves return to the ... Found inside – Page 170We can transform the acoustic hologram into an optical hologram and reconstruct from it by means of light as reference wave a visible image of the object ... Found inside – Page 517REVIEW OF ACOUSTIC-WAVE BEHAVIOR Acoustic waves are generated by ... if the crystals are deformed (compressed) by the application of mechanical force. Found inside – Page 2Ultrasound consists of waves of compression and rarefaction which propagate ... signal generator, converts electrical signals into ultrasonic sound waves of ... Found inside – Page 382sponding to a selected region of interest of said reference image US 6,413,219 ... unit arranged to generate received signals in response USING MULTIPLE CUT ... Found inside – Page 498Sound is transmitted as series of longitudinal waves, vibrating the molecules within the medium ... which can be read as a signal used to generate an image. Found inside – Page 578The use of sounds waves to generate images has a long history in medicine, ... From a diagnostic standpoint, the application of critical care ultrasound can ... Found inside – Page 155However, instead of sound waves light is used to generate an image. The speed of light is much higher than that of sound waves. Found inside – Page 1148STARTING AND LIGHTING SYSTEM FOR AUTOMOBILES ; William L. Bliss , Niagara Falls , N. Y. App . filed May 13 , 1914 . ... SYNCHRONIZING MEANS FOR MOTION - PICTURE PROJECTORS AND SOUND - REPRODUCING MECHANISMS ; Charles W. Ebeling , New York ... POCKET - LAMP GENERATOR ; Oskar Junghans , Schramberg , Germany . ... By means of light flashes or sound waves . Found inside – Page 12HOW ULTRASOUND WORKS Ultrasound harnesses high—frequency sound waves in the range of 2—18 ... The echoes are then processed by a computer to generate ... Found inside – Page 635A recurrent background image of intersecting circular waves suggests the ... more mechanical application of the concept of visual music reverses the flow of ... Found inside – Page 6Technical Aspects of Ultrasound Equipment Pulsed Sound Waves When a continuous sound wave (constant tone) is emitted, there is no way to calculate the travel time of the sound. To generate an image, it is necessary to transmit the sound in pulses of brief duration. ... for a particular imaging application is guided by its characteristic field of view and the way in which the sound beam can be steered. Found inside – Page 3Acoustic pressure D e n s i t y / ... This section describes the essential concepts of how ultrasound waves can be used to generate an image of the heart. Found inside – Page 436The pattern of the returning sound waves is used to generate an image of the tissue studied. Ultrasound of the chest is excellent for evaluating the heart ... 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