How Ultrasound Works

The Diagnostic Sonography more commonly known as Ultrasound is a medical procedure in which you use high frequency sound waves to produce visual images of organs tissues or blood flow inside the body. Ultrasound is regularly known as the procedure used to examine women who are expecting. Although, Sonography is used in many different ways other than for expectant mothers. Sonography is also used to detect such things as heart disease, heart attacks, and vascular disease that can lead to stroke. (SDMS, 2010) Moreover, Sonography is also used to examine breasts, abdomens, female reproductive systems,

There is a lot of history relating to ultrasound or another name is sonography. It has come very far for the uses in not only medical situations but other technological situations. Ultrasound has been seen to dates back to the 1700’s. The first inventor known to study ultrasound is Lazzaro Spallanzani in 1794. He was a physiologist to first study ultrasound physics by using bats. Bats use echolocation, which are sound waves that travel in the air till they hit an object and bounce back to the bat so it can in a sense see what is around him by knowing how long the wave took to get back. Ultrasound works similarly to bats echolocation. It uses high frequency sound waves that capture live images from inside the body. This works like how a bat can see with soundwaves but be almost blind. The next person Karl Dussik, physicist was the first doctor to use ultrasound as an instrument for diagnosis called it Hyperphongraphy. They used this to try and locate brain tumors with one transducer on side of the skull

Most ultrasounds are done using a transducer on the surface of the skin. Sometimes, however, doctors and technicians can get a better diagnostic image by inserting a special transducer into one of the body's natural openings

Another form of imaging is ultrasound. Ultrasound, which uses very high frequency sound, is directed into the body. And because the tissue interference's reflect sound, doctors are able to produce, by use of a computer, a photograph or moving image on a television. Ultrasound has many application uses on the body, but is more commonly used in examinations of the fetus during pregnancy, because use of radiation may affect the outcome of the baby. Some other practices for ultrasound include examination of the arteries, heart, pancreas, urinary system, ovaries, brain, and spinal cord. And because sound travels well through fluids it is a very useful technique for diagnosing cysts( which are filled with fluid), and fluid filled structures such as the bladder. And since sound is absorbed by air and bone it is impossible to use a ultrasound on bones or lungs.

Diagnostic medical sonography is a profession where sonographers direct high-frequency sound waves into a patient’s body through the use of specific equipment to diagnose or monitor a patient’s medical condition. As described by the Bureau of Labor Statistics, this examination is referred to as an ultrasound, sonogram, or echocardiogram. The high-frequency sound waves emitted from the handheld device, called a transducer, bounce back creating an echo and therefore produce an image that can be viewed on the sonographers computer screen. This image provides the sonographer and physician with an internal image of the patient’s body that will be used in the diagnosis. The most familiar use of ultrasound is used in monitoring pregnancies

Over the last few years ultrasound technicians as a career has upgraded a lot because of the advancements in the technology. We have learned besides seeing what is going on inside the body we can use the sound waves, that ultrasound technology used to produce the image, to provide therapy to correct a problem which Emma Lloyd talks about in her article Benefits of

Diagnostic medical sonography is a profession where sonographers direct high-frequency sound waves into a patient’s body through use of specific equipment to diagnose or monitor a patient’s medical condition. As described by the Bureau of Labor Statistics, this examination is referred to as an ultrasound, sonogram, or echocardiogram. The high-frequency sound waves emitted from the handheld device, called a transducer, bounce back creating an echo and therefore produce an image that can be viewed on the sonographers computer screen. This image provides the sonographer and physician with an internal image of the patient’s body that will be used in diagnosis. The most familiar use of ultrasound is used in monitoring pregnancies, and is

Ultrasonic sensors emit short, high-frequency sound pulses at regular intervals. These propagate in the air at the velocity of sound. If they strike an object, then they are reflected back as echo signals to the sensor, which itself computes the distance to the target based on the time-span between emitting the signal and receiving the echo.

Sonography utilizes sound waves to generate an image that can be analyzed to determine or rule out a diagnosis. Ultrasound or ultrasonography is a medical imaging technique that uses high frequency sound waves. It is a high pitch frequency that cannot be heard by the human ear. A diagnostic medical sonographer works directly with patients in a dimly lit room with imaging machines. The sonographer gets the medical history of the patient and prepares the patient for an ultrasound examination. The sonographer explains the noninvasive procedure and answers any question the patient might have. The sonographer positions the patient and covers the patient only exposing the area needed for the procedure. The sonographer

An Ultrasound Technician, also known as diagnostic medical sonographers, use high-frequency sound waves to create images of soft tissue in a patient's body. Physicians use these images to diagnose abnormalities and diseases in a patient. As early as 1826, a Swiss physicist name Jean-Daniel, had effectively used an underwater bell to determine the speed of sound in the waters of Lake Geneva. In the late 1800s, physicists were working successfully towards defining the fundamental physicists of sound waves, transmission, propagation, and refraction. Lord Rayleigh was the first to describe sound waves as a mathematical equation, forming the basis of future practical work in acoustics. Lord Rayleigh famous work “the Theory of Sound” was published

Gill, R., 2012. The physics and technology of diagnostic ultrasound: a practitioner's guide. Abbotsford, N.S.W.: High Frequency Publishing.

Sound is a mechanical wave, propagating through a medium in order for it to travel (Venables 2011a). Ultrasound is defined as high frequency sound waves, above the audible range i.e. >20 kHz (Zidan et al. 2011). These waves are formed using the pulse-echo principle (Venables 2011a). This principle refers to the piezoelectric crystals which are situated in the transducer. When an alternating electrical voltage is applied across the transducer element (Lieu 2010), the element undergoes a series of compressions and rarefactions, resulting in electrical energy being converted into mechanical waves (ultrasound). These ultrasound waves propagate through tissues until they reach an acoustic interface. It is here “where there is a change in impedance (an acoustic boundary)” (Venables 2011a, that ultrasound waves will be reflected back to the transducer as echoes. These reflected echoes are then turned into an electrical signal and displayed on the ultrasound image as shades of grey, ranging from black to white.

in medicine and biology. The design and implementation of novel and -state of the art- ultrasound

Ultrasound or ultrasonography is a medical imaging technique that uses high frequency sound waves. It is a high pitch frequency that cannot be heard by the human ear. In ultra sound the following happens: High frequency sound pulses (1-5megahertz) are transmitted from the ultrasound machine into your body using a probe. The sound wave will travel into your body until it hits an object such as soft tissue and bone. When the sound wave hits these objects some of the wave will be reflected back to the probe. While some waves may carry on further till they hit another object and then reflected back. The probe picks up these reflected sound waves and relays them to the machine. The distance and time from the probe,

Weighing both the positives and the negatives of the ultrasound all together, it has still made a major breakthrough in the medical field. Where simple diagnostics can be carried out within a couple of minutes making it time efficient not only for the doctor but for the patient too while also being painless for the patient. This quality makes this device a must-have device in every clinic and