image. However‚ sonography uses sound waves to generate an image. Through the use of special equipment and computers‚ diagnostic medical sonographers direct high frequency sound waves into parts of a patient’s body through a wand called a transducer. The transducer sends and receives reflected echoes of sound‚ much like a dolphin uses “echo-location” (Merton). The initial responsibility of a sonographer is to explain the procedure to the patient and obtain any additional medical history relevant
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four 7-segment displays‚ five ure distance without contact. transistors and some discreet comOne way is to use ultrasonic ponents. The ultrasonic transmitterwaves at 40 kHz for distance measurereceiver pair is shown in Fig. 1. ment. Ultrasonic transducers measure Ultrasonic generators use piezothe amount of time taken for a pulse of electric materials such as zinc or lead sound to travel to a particular surface zirconium tartrates or quartz crystal. and return as the reflected echo. The material
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000 to 100‚000. Also Ultrasound frequencies range from 20 kHz (the upper range of hearing for a young adult human) through 150 kHz (audible to some bats and other creatures)‚ right up to 10 MHz (used in some medical treatments and industrial cleaning applications). While these frequencies overlap with those of radio waves‚ they are different because sound and ultrasound are vibrations in the air‚ while radio waves are electromagnetic waves that can travel in a vacuum. UltraSound: Basic Idea – Send
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we can visualize the baby but is this an intrution What with ultrasounds is private and what is public? – family members coming to the birth‚ midwives and doctors that surround the woman whilst she is visualizing her fetus whilst in the womb‚ Bonding scan‚ seeing and feeling‚ when the mother visualizes her fetus moving and can also feel it ‚‚ but this is not the case for other members of the family in the room watching the ultrasound images.
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technical article I read was called "Ultra sound warning: Procedure may harm unborn babies’ brains." This article explained the danger to unborn babies when ultrasounds are performed on the mother to be. Research has been conducted to test the danger of ultrasounds on unborn mice. The research has shown some of the dangerous sides of ultrasounds. The mice were injected while in the womb to track their brain development. There were 335 mice injected. The research showed that the pregnant
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Medical sonography (ultrasonography/ultrasound) an ultrasound-based diagnostic imaging technique used to visualize muscles and internal organs‚ their size‚ structures and possible pathologies or lesions. (TheFreeDictionary.com‚ n.d.) Medical sonography was first applies to the humans body for medical purposes by Dr. George Ludwing at the Naval Medical Research Institute‚ Bethesda‚ Maryland in the late 1940s. (TheFreeDictionary.com‚ n.d.) For an ultrasound to work there are events that must happen:
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|ANALYSIS OF VEHICLE OVERTAKING MANEUVER USING EMBEDDED SYSTEM IN KEIL SOFTWARE AND | |ALGORITHM USING NEURAL NETWORK | PROJECT REPORT Submitted by | K.DINESH | | N.DHARMARAJ | | R.KANNAN
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Ultrasound Physical effects of ultrasound: 1- Thermal effects 2- Non-thermal effects 3- Effect of US in tissue repair First: thermal effect @ It is due to generation of heat within the tissue due to adsorption of US. @ Tissue with high amount of protein absorbs US more than other tissues. @ Generation of heat within the tissue will decrease pain‚ joint stiffness & increase blood flow. @ Thermal effect achieved if the temperature of the tissue is raised to 40°c - 45°c for at least
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SYNOPSIS OF MINOR PROJECT ON “Microcontroller Based Ultrasonic Distance Meter” SUBMITTED IN THE PARTIAL FULFILLMENT FOR THE AWARD OF THE DEGREE OF BACHELOR OF TECHNOLOGY IN ELECTRONICS AND COMMUNICATION ENGINEERING Submitted by Himanshu 1809263 K.shashwat 1809249 Gurmeet Singh 1809252 Under the guidance of Er.Banisha
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(1992) Modern Fuchs‚ F. J.‚ (1999). Ultrasonic cleaning: fundamental theory and application. Applications Engineering‚ Blackstone-Ney Ultrasonics Inc.‚ Jamestown‚ New York‚ USA; Ozcan‚ E.‚ ‘Ultrasound assisted extraction of phenolic from grape pomace’ (2006)‚1-62 Garcia‚ L. and Castro‚ L. (2003) ‘Ultrasound: a powerful tool for leaching’‚ Trends in Analytical Chemistry‚ 22(1)‚ 41-43 IHW (2005) Movement across membranes; Diffusion‚ osmosis and active transport[online]‚ available: http://www.biologymad
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