A Liver Ultrasound is a painless imaging test that examines your liver and its surrounding area. It works by bouncing high-frequency sound waves off your organs to produce images — you will only feel the sonographer moving a probe across your skin, which causes no pain. There are four types of ultrasounds that can be performed on your liver, each operating in a similar way but with some key differences outlined below.
A Liver Ultrasound uses a probe — similar in appearance to a wand — connected to a computer console to take images inside your body. The four types of liver ultrasound include:
* Standard ultrasound
Scans the upper right abdominal quadrant.
* Vascular ultrasound
A Doppler ultrasound focused on blood vessels.
* Elastography ultrasound
Also known as transient elastography, measuring liver stiffness.
* Contrast-Enhanced Ultrasound (CEUS)
Uses a contrast agent to provide clearer images of lesions.
A Liver Ultrasound is a preliminary test that allows doctors to view your liver, usually to help diagnose liver disease. Jaundice or pain in the upper right quadrant are common symptoms that can indicate liver disease. An ultrasound provides a quicker way to confirm liver disease than a blood test, and also allows doctors to monitor your liver health after a diagnosis.
A liver scan can also reveal fat storage in the liver, confirming steatotic liver disease; swelling and inflammation, which may indicate hepatitis; and scar tissue, which can suggest fibrosis or cirrhosis. These represent the main stages of chronic liver disease.
A Liver Ultrasound can also help confirm liver cancer by revealing tumours or liver lesions, including their size, to support a comprehensive treatment plan.
Very little preparation is needed for a Liver Ultrasound. In some cases, you may be asked to fast for six to twelve hours before the scan to ensure your digestive system is clear, as food and gas can interfere with ultrasound waves. Fasting also allows your gallbladder to dilate, making it easier to view the liver.
Your doctor will advise whether you should drink water before the scan or avoid liquids for a few hours beforehand — in some scans, a full bladder can be helpful.
You will attend an imaging centre or hospital and lie on an exam table face up, with your top lifted to reveal your abdomen. A warmed, clear, hypoallergenic gel will be applied to your abdomen to provide smooth contact between your skin and the ultrasound transducer wand.
The wand will be moved across your stomach — you may feel some pressure, particularly if the area is tender, but the procedure should not be painful. Images will be captured and displayed in real time on the screen, with snapshots and short videos taken as your sonographer works. You may be asked to adjust your position or breathing to provide a clearer view.
The procedure varies slightly depending on the type of ultrasound:
* Standard Liver Ultrasound
A modified abdominal ultrasound — sometimes called an upper right quadrant ultrasound — that examines the liver, gallbladder, bile ducts, part of the pancreas, and right kidney. These are all connected within the biliary system, with the liver as the primary focus.
* Vascular Liver Ultrasound
Focuses on the blood vessels within the liver to assess blood flow and liver health. Doppler ultrasound images are combined with standard images to record blood cell speed and direction.
* Elastography Ultrasound
Measures the fibrosis or stiffness of the liver using a special transducer that assesses how quickly vibrations travel through liver tissue — a faster speed indicates greater fibrosis.
* Contrast-Enhanced Ultrasound (CEUS)
Offers clearer images of lesions using a contrast agent injected into a vein before the scan. The agent travels to the liver through the bloodstream, reflecting sonographic waves during the scan to make lesions easier to identify.
After your scan, the images will be sent to a radiologist who will study them and write a detailed report. In some cases, findings may be discussed with you immediately, though this varies depending on your provider. Otherwise, the report will be forwarded to your primary healthcare provider and an appointment arranged to discuss the results if needed. Results can take anywhere from a few days to a couple of weeks.
You can return home and eat and drink normally after the scan, and most people are able to return to work immediately, as the procedure is painless and non-invasive.
In some cases, further tests such as a blood test or biopsy may be required to confirm your diagnosis.
Safe, non-invasive, and painless
No radiation exposure or foreign materials enter your body, making it a safe option for all patients.
Hypoallergenic contrast agent
The contrast used in CEUS is a gas that uses small bubbles to reflect scan waves — considered hypoallergenic and safe, reducing the risk of an allergic reaction.
Fast imaging
A Liver Ultrasound is a quick procedure, allowing your provider to see more patients efficiently and enabling you to receive your scan and diagnosis without delay.
There are no known risks associated with a Liver Ultrasound, making it a very safe procedure. In rare cases, factors such as calcification, fatty tissue, or intestinal gas may interfere with the sound waves and affect the scan's effectiveness. As interpreting images is a manual process, some margin for error exists — however, since an ultrasound is typically a first-line test, a follow-up is commonly offered where additional tests can be used to confirm findings and inform a treatment plan.
A Liver Ultrasound is a quick and easy scan that can confirm liver disease and identify tumours or lesions. The scan typically takes around 30 minutes and gives your doctor a clear image of your liver, blood vessels, and tissues. Several types of ultrasound are available, all of which are painless and safe. These tests are the first step in diagnosing liver disease and can be used to monitor your liver health over time.