Unlike many other imaging tests, ultrasounds do not use radiation to produce images of the internal body. What Is an Ultrasound?Ī medical ultrasound is a type of imaging test. This process allows a doctor to check a baby’s development and health. Pregnant women may get ultrasounds to generate sonograms of the fetus. Extremely dense tissues such as bones and kidney stones produce echoes easily and appear bright white on a sonogram.Īs we’ll discuss more below, sonograms help doctors evaluate organs for infections, damage or disease. They will, therefore, appear black on a sonogram. When sound waves hit a tissue, they reflect back into the ultrasound machine and transform into a white or gray image, depending on the intensity of the sound wave. For example, sound waves travel easily through fluids and will not bounce off of water, urine or other liquids. Sound waves will create images only when they can reflect from a surface. The computer will process the sound waves and turn them into an image, which the patient and technologist can view on the monitor. The sound waves will bounce back once they contact the tissues being studied, travel through the transducer and enter the ultrasound computer. During an ultrasound, the technologist will send sound waves to the part of the body under examination using a wand-shaped device called a transducer. How Does a Sonogram Work?Ī sonogram is produced by sound waves. Sonography refers to the practice of using an ultrasound machine to create a sonogram, and the sonographer is the skilled technologist who operates the equipment. You may also hear the word “sonography” used in reference to the ultrasound exam. In this instance, the sonogram is the black, white and gray image that shows the fetus in the uterus. For example, many parents can recall the thrilling moment they saw their baby on the ultrasound monitor and were then given the printed sonogram to take home. In other words, it’s not the procedure itself but the product. What Is a Sonogram?Ī sonogram is an image produced by an ultrasound. We’ll explore the differences and similarities between these terms below and explain how they work.
What do these terms mean exactly, and how are they different? In this post, we’ll clarify the meaning of these easy-to-confuse words and provide some information about both. You may have heard the words “sonogram” and “ultrasound” used interchangeably, and it’s easy to get the two confused.
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