ULTRASOUND An ultrasound is a medical imaging technique uses high frequency sound waves to look inside the body. During World War 2‚ there was a lot of research of radar and sonar which led to the invention and progress of the ultrasound device. It was invented by Ian Donald in 1957. It was first tested on a pregnant woman but later used for more purposes. The ultrasound was improved and also led to the development of other useful medical instruments such as the device CAVITRON‚ which destroys
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or diagnostic purpose.”3 Women want to feel like they know their baby before they are born. The goal of keepsake for ultrasound is to enhance the emotional bond between the mother and her child. Some believe that keepsake ultrasounds actually help the fetus and the mom. Improving the mother’s personal well-being intern improves the health of the fetus. Having a prenatal ultrasound is usually an enjoyable event that combines medical care in family celebration.4 So long as the pregnancy is confirmed
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Ultrasound is a sound pressure with a frequency greater than the limit of human hearing. This limit varies from person to person‚ it is around 20 kilohertz in young adults. 20 kHz is a useful lower limit in describing ultrasound. The making of ultrasound is used in many different fields ‚ a property also used by animals such as bats for hunting. The most well known application of ultrasound is its use in sonography to produce pictures of foetuses in the woman’s womb. Ultrasound is also used for
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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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History‚ Use and Safety of Ultrasound Introduction Ultrasound is the generation of energy using sound wave of about 20‚000 or more vibrations per second. The ultrasound is mostly used in imaging tools and particularly in medical diagnosis. The ultrasound uses sound waves that are above the frequency of the human ear. A transducer is used to give off the sound waves that are reflected back from the tissues‚ and organs giving a picture of what are inside the body. This is later drawn on
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Wave: The generator of ultrasonic wave is nothing but an oscillator‚ which can generate these high frequency waves. The ultrasonic waves can be produced by the following methods. a) Magnetostriction Generator b) Piezoelectric or Ultrasound Generator a) Magnetostriction Effect This effect is very useful in generating ultrasonic waves are known as Magnetostriction effect. This effect was first discovered by Joule in 1847 & subsequently used by G.W Pierre in an oscillator
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diagnostic ultrasound have a role in emergency medicine? Introduction Emergency medicine (EM) is the medical specialty involving care for undifferentiated and unscheduled patients with illnesses or injuries requiring immediate medical attention. The specialty is not limited to the emergency department and may be practiced in numerous other settings including urgent care clinics‚ ambulances‚ at disaster sites‚ and even through telecommunications technology‚ known as telemedicine. Diagnostic ultrasound is
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Tim Watson. (2008). Ultrasound in contemporary physiotherapy practice. Ultrasonics ‚ 48‚ 321-329. Abstract Therapeutic Ultrasound is a well established and commonly used practice in the field of Physiotherapy and Rehabilitative sciences. Primarily ultrasound is used in the treatment and repair of soft tissue lesion management used as thermal modality. However in recent practice the non-thermal aspects of Ultrasound as intervention are being employed. Evidence indicates the dose dependant
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CASE 28 Ultrasound Machines‚ India‚ China‚ and a Skewed Sex Ratio General Electric Co. and other companies have sold so many ultrasound machines in India that tests are now available in small towns like Indergarh‚ where there is no drinking water‚ electricity is infrequent‚ and roads turn to mud after a March rain shower. A scan typically costs $8‚ or a week’s wages. GE has waded into India’s market as the country grapples with a difficult social issue: the abortion of female fetuses by families
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that on its own prenatal ultrasound exposure is not a cause of autism. Although previously performed studies reported a link between autism and ultrasound exposure the results have not been replicated. More recently performed studies have found that those exposed to ultrasound prenatally have the same risk of developing autism as those unexposed. Based on the results of such research studies as Grether et al. and Stalberg et al. it is recommended that prenatal ultrasound use be continued for medical
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