Sonogram vs. Ultrasound: What’s the Difference?

Medical imaging plays a critical role in diagnosing and treating many medical conditions. Two common imaging modalities are sonograms and ultrasounds. While these terms are often used interchangeably, they are not the same. 

In this blog post, we will outline and discuss the distinctions between a sonogram vs. ultrasound. 

What are Sonograms and Ultrasounds? 

First, let’s define the terms.

Ultrasound

• An ultrasound is a non-invasive medical imaging technique that uses high-frequency sound waves to create real-time images of internal organs and structures.
• It is a safe, painless, and radiation-free diagnostic tool commonly used to diagnose and monitor a wide range of medical conditions.

Sonogram

• On the other hand, a sonogram, also known as an ultrasound scan, is a non-invasive diagnostic imaging test that uses high-frequency sound waves to create images of the inside of the body.
• Sonograms are commonly used to monitor fetal development during pregnancy and to diagnose and monitor medical conditions, such as tumors, cysts, and organ damage.

How Do Sonograms and Ultrasounds Differ? 

1. Use

One of the main differences between sonograms and ultrasounds is how they are used. Sonograms are typically used during pregnancy to monitor fetal development and detect any potential issues. They can also be used to examine other organs and tissues in the body, such as the liver, kidneys, and heart. 

In contrast, ultrasounds are used to produce real-time images of internal structures. They can be used for various diagnostic purposes, such as examining the bladder, gallbladder, and pancreas.

2. Information 

Another key difference between sonograms and ultrasounds is the type of information they provide. Sonograms provide still images that show the size, shape, and position of organs and tissues in the body. This information can be used to identify abnormalities and make a diagnosis. 

Ultrasounds, on the other hand, provide real-time images that show how organs and tissues are functioning. For example, an ultrasound of the heart can evaluate blood flow and detect any issues with the heart’s valves.

3. Technology

The technology used to produce sonograms and ultrasounds also differs. Sonograms are produced using a device called a transducer probe, which emits high-frequency sound waves into the body. The sound waves bounce off internal structures and organs and are picked up by the transducer, which converts them into an image. 

Ultrasounds also use a transducer probe, but they typically produce higher-frequency sound waves. This allows for more detailed images and better resolution.

4. Procedures

While sonograms and ultrasounds are both non-invasive procedures, there are some differences in how they are performed. 

During a sonogram, the patient lies down on an examination table, and a technician applies a clear, water-based gel to the skin over the area being imaged,which helps transmit sound waves into the body and enhances the image’s quality. The technician then moves a handheld transducer over the skin, emitting high-frequency sound waves into the body. The sound waves bounce off internal structures and are picked up by the transducer, which converts them into an image displayed on a monitor. After the images have been obtained, the technician will wipe off the gel, and the patient can usually return to normal activities immediately. The images produced by a sonogram are then reviewed by a radiologist or physician, who will use them to make a diagnosis or recommend further testing if necessary.

During an ultrasound, the patient lies down on an examination table, and a technician applies a clear, water-based gel to the skin over the area being imaged. The gel helps to transmit the high-frequency sound waves into the body and enhances the quality of the images produced. The technician then moves a handheld transducer over the skin, emitting high-frequency sound waves into the body. The sound waves bounce off internal structures and are picked up by the transducer, which converts them into an image displayed on a monitor. After the images have been obtained, the technician will wipe off the gel, and the patient can usually return to their normal activities immediately. The images produced by ultrasound are then reviewed by a radiologist or physician, who will use them to make a diagnosis or recommend further testing if necessary.

5. Limitations

Finally, it is important to note that while sonograms and ultrasounds are useful diagnostic tools, they have limitations. For example, ultrasound images may be challenging to interpret if the examined area is obscured by gas or bone. Sonograms may not always be able to detect certain types of abnormalities, such as tumors or cysts.

Conclusion

Sonograms and ultrasounds are vital imaging modalities to diagnose and treat medical conditions. Sonograms produce still images, while ultrasounds produce real-time images. Sonograms are typically used to monitor fetal development and examine organs and tissues in the body, while ultrasounds are used for various diagnostic purposes. The technology used to produce sonograms and ultrasounds differs. 

It is important to remember that while these imaging modalities are useful, they have limitations and should always be used with other diagnostic tools and medical expertise to provide the most accurate diagnosis and treatment plan.

Austin Emergency Centers offer state-of-the-art diagnostic imaging services, including ultrasounds and sonograms, with results provided quickly and accurately. Our emergency centers are open 24/7, providing patients with access to essential diagnostic services at any time. With experienced emergency physicians, skilled technologists and radiologists, and a commitment to compassionate care, Austin Emergency Centers are dedicated to providing patients with the highest quality emergency medical care and diagnostic services.