what is Sonography / ultrasound How do Ultrasound scans / Sonography work?

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what is ultrasound Ultrasound scans How do they work? Ultrasound (Sonography) Ultrasound is a type of oscillating sound pressure wave that has a higher frequency than human hearing is able to detect. Ultrasound is not a unique type of sound, therefore, but is classified differently due to the fact that humans cannot hear it. Ultrasound has a frequency greater than 20kHZ, which is beyond the frequency limit of sounds that humans are able to hear.

In 1794, Lazzaro Spallanzani demonstrated that bats did not rely on vision but, rather, utilized the echo of a type of sound that was inaudible to the human ear to navigate their path. This later led to further research in the field and eventually led to the concept of ultrasound that we know now.Ultrasound has proven to be useful in many fields including medical imaging, which is also referred to as sonography. The technique is utilized by veterinarians and medical practitioners and offers a way to scan for objects and measure distances in living bodies.

The concept of using high frequency sound waves for medical optical imaging was first penned in 1939 by Sokolov, although the initial images produced were low quality in terms of contrast and sensitivity.

Over the following years, the technique was tweaked such that ultrasonography is has been used in medical practices as a tool to visualize muscles, tendons, internal organs and tumors for more than 50 years. It is widely known for its use in prenatal care, with its ability to visualize and monitor the growth of a growing fetus during pregnancy.

Ultrasonography offers many tangible benefits, including:

Portable devices
Non-destructive nature
Given these benefits, ultrasound is becoming increasingly common in emergency medicine to visualize internal issues quickly and help in emergency decision-making.


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