After X-ray
technology was known, further advancement led to the discovery of sonography.
This technique was first used to allow ships to detect unseen objects
underwater. Sophisticated equipment concentrated ultrasound - high frequency
sound waves - which "bounced off" the object and created a graphic
image. The technique was originally developed between the first and second
world wars.
In the early
1950s, medical researchers began to explore the use of sonography on the human body,
at first to see the inner workings of the heart. Today, what began as a way to
see the wreck of the Titanic far under the ocean and to detect enemy submarines
in wartime, is used to examine many internal body systems.
Sonography
is a diagnostic medical procedure used to screen for health issues by examining
soft tissue. Ultrasound simply means that these sound waves are of a higher
frequency than the human ear can detect. The sound waves are transmitted and
reflected from the structure being studied and it is these echoes that form a
picture image of the organ on a computer screen. Sonography is not painful and
is generally considered safe.
The general
public is most familiar with the usage of sonography during pregnancy to check
on the age and development of a fetus. A medical sonogram is often the first
glimpse that parents have of their baby. Ultrasound has other medical uses
including breaking up kidney stones, cataract treatment, guiding medical
procedures such as fine-needle biopsy and some cancer treatments. Dentists may
also use it for cleaning teeth.
Today,
hand-held transducers, the device which transmits the sound waves, are
replacing huge sonography machines. Easy portability can lead to faster
diagnoses. With health care in general as a growth field, ultrasound
technicians will be in demand. A competent technician is the key to a
well-defined sonograph that can assist a correct diagnosis.
When
considering schooling, it is important to find an accredited training program
as not all programs offered will lead to the proper credentials. Salaries vary
by specialty, location and the kind of facility in which a technician is
employed. Further training in specialities such as cardiac ultrasound or
neurosonography can command higher salaries.
Because of
such advances, people are living longer today. There is a growing need for
ultrasound sonography to help combat ailments that people did not have a chance
of surviving a hundred years ago when the technology was first being developed
in a time of war.
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