What are Ultrasounds

Ultrasounds are also called ultrasound imaging, ultrasound scanning or Ultrasonography. They are also called sonograms or sonography. The procedure has a lot of names but they all mean the same thing. We will use the term ultrasound from here on out just to make things easy.


What are Ultrasounds?

An ultrasound is a noninvasive medical procedure that helps doctors diagnose and treat medical conditions. The method uses high-frequency sound waves to produce very specific images of what’s inside a patient’s body.

ultrasound in two views

Ultrasound exams do not use radiation and patients are not exposed to any radiation. They are not x-rays.

Ultrasound equipment produce high-frequency sound waves that are aimed into and through a person’s body. The echoes of these waves that are bounced back off structures inside that are then recorded. These principles of using echos to gather data are actually the same principles that allow SONAR on boats to see the bottom of the ocean. It’s basically the same type of “Echolocation” bats use to fly around at night without ever bumping into anything or each other.

Qualified technologists have the ability to measure the different frequencies of echoes bouncing back and decipher what caused them or exactly what they bounced off. With the aid of a computer, this data allows a very precise image to be created almost in real time. Read more in depth about just exactly how it works here.

ECG ultrasound of heart in two views

Health care professionals use ultrasounds to view a man, woman, or even a child’s heart, blood vessels, kidneys, liver and/or other organs. And because ultrasound images are captured in real-time, they can actually show the movement of a person’s internal organs almost in real time, including the blood flowing through their blood vessels.

Ultrasound technology is especially accurate at seeing interfaces between solid and fluid filled spaces. Thus, during pregnancy, doctors use ultrasound tests to examine the fetus inside a woman and are able to view the structure and any movement of the fetus.

baby ultrasound here in two views

Conventional ultrasounds can display their images as thin, flat sections of the body. However recent advancements in technology have created ultrasound imaging that is three-dimensional (3-D). The same principals are used but computers format the sound wave data into 3-D images. Four-dimensional (4-D) ultrasound is 3-D ultrasound but shown in motion.

Common Questions:

What are Ultrasounds?
Why would someone need an Ultrasound?
What are the different types of Ultrasounds?
What is getting an Ultrasound like?
What are the costs of Ultrasounds?
What are the risks of Ultrasounds?
Why does Ultrasound gel do?
How do Ultrasounds work exactly?

Getting an Ultrasound:

Before the Ultrasound
During the Ultrasound
After the Ultrasound


fetal baby ultrasound here in two views

Above: A first baby picture is the first thing most people think about when they think of an ultrasound.

Two Views of Ultrasound test

Above: Patient receiving an ultrasound test.

mom and baby Ultrasound

Above: Having your first baby picture tops the list for best non-medical reason for an ultrasound.

cardio heart Ultrasound

Above: An ultrasound can help view the arteries and blood flow to and from the heart.

Ultrasound of cartery blood flow in two views

Above: Doppler ultrasounds can measure the conditions, including blood flow, of the arteries.

shoulder ultrasound therapy in Two Views

Above: Ultrasounds can even be used in therapy for almost any part of the body.


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IMPORTANT: The information on this page, and throughout the entire site, is not intended to provide advice or treatment for a specific situation. Consult your physician and medical team for information and treatment plans on your specific condition(s). Images are shown for illustrative purposes. Do not attempt to draw conclusions or make diagnoses by comparing these image to other medical images, particularly your own.

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