Optics device: Ultrasound

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by bricake5
Last updated 4 years ago

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Science
Subject:
Technology
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Optics device: Ultrasound

to see more uses of an ultrasound machine go to: http://www.medicalnewstoday.com/articles/245491.php

The device was invented in Glasgow in the 1950s by Ian MacDonald, an obstetrician, and Tom Brown who was an engineer.

optics device: Ultrasound

Ultrasounds are commonly known to be used during pregnancy to view the baby’s condition or gender but an ultrasound can be used for other things such as neurology (used to measure blood flow in the carotid arteries), gastroenterology(allows the ability to view solid organs in the patient’s body), musculoskeletal sonography ( able to view muscle, tendons, bones etc.)

X-rays vs.UltrasoundThe advantages ultrasound machines have over xrays are that the sound waves used in the machine are not harmful at all to the human body whereas in the case of xrays the electromagnetic radiation that emits from the machine are harmful. Xrays can cause damage to your DNA, your cells and it can even, in some cases, cause cancer.

HOW THE MACHINE WORKSWhen the ultrasound machine is turned on it emits high-frequency sound waves into the patient’s body. They are technically around 1-5 megahertz but any frequency above that does not penetrate as low as lower frequencies. The sound waves eventually hit a boundary inside of your body and reflect back to the probe, which gives you the image on a screen. The machine measures the distance from the probe to the boundary and the intensities of the echoes which are then displayed on the screen. http://science.howstuffworks.com/ultrasound1.htm


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