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Ultrasound imaging, also called
sonography, is a painless and noninvasive procedure
used to visualize the inside of the human body
through the use of high-frequency sound waves.
During an ultrasound, a trained
technician or doctor moves a device called a
transducer over part of your body; the transducer
emits sound waves, which bounce off tissues and are
received back as echoes. The echoes created can
identify the size, structure and location of body
tissues; that information is then used to create an
image on the area of study.
Ultrasound is the most utilized form
of diagnostic imaging after general x-ray, largely
because no radiation is involved, making it the
preferred imaging modality for diagnosis and
monitoring of pregnant women and fetuses.
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It is also frequently used for
breast, cardiac, renal, liver, gallbladder, musculo-skeletal,
ophthalmic, testicle, salivary gland and lymph node
imaging among many others.
Additionally, ultrasound serves as a
guiding tool for interventional procedures such as
fine needle breast aspiration and biopsy
An exciting development in ultrasound
has been the development and increased use of 3-D
and 4-D ultrasound imaging, which gives
practitioners and parents an extremely detailed
picture of the unborn baby while in utero.
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Compare the technologies |
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Currently 4-D is used primarily for
creating keepsake photos and parental bonding, but
some recent medical studies recognize the benefits
of this type of imaging for identifying fetal
anomalies. |
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