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Abdominal Ultrasound – Uses, Indications, Procedure, Result

Last updated: February 8, 2026 Medically reviewed by: RxHarun Orthopedic Specialist Doctor Reading time: 10 min read

Abdominal ultrasound is a type of imaging test. It is used to look at organs in the abdomen, including the liver, gallbladder, spleen, pancreas, and kidneys. The blood vessels that lead to some of these organs, such as the inferior vena cava and aorta, can also be examined with ultrasound.

How the Test is Performed

An ultrasound machine makes images of organs and structures inside the body. The machine sends out high-frequency sound waves that reflect off body structures. A computer receives these waves and uses them to create a picture. Unlike with x-rays or CT scans , this test does not expose you to ionizing radiation.

You will be lying down for the procedure. A clear, water-based conducting gel is applied to the skin over the abdomen. This helps with the transmission of the sound waves. A handheld probe called a transducer is then moved over the abdomen.

You may need to change position so that the health care provider can look at different areas. You may also need to hold your breath for short periods during the exam.

Most of the time, the test takes less than 30 minutes.

How to Prepare for the Test

How you will prepare for the test depends on the problem. You will likely be asked not to eat or drink for several hours before the exam. Your provider will go over what you need to do.

How the Test will Feel

There is little discomfort. The conducting gel may feel a little cold and wet.

Why the Test is Performed

You may have this test to:

  • Find the cause of abdominal pain
  • Find the cause of kidney infections
  • Diagnose and monitor tumors and cancers
  • Diagnose or treat ascites
  • Learn why there is swelling of an abdominal organ
  • Look for damage after an injury
  • Look for stones in the gallbladder or kidney
  • Look for the cause of abnormal blood tests such as liver function tests or kidney tests
  • Look for the cause of a fever

The reason for the test will depend on your symptoms.

Normal Results

The organs examined appear normal.

What Abnormal Results Mean

The meaning of abnormal results depends on the organ being examined and the type of problem. Talk to your provider if you have any questions or concerns.

An abdominal ultrasound can indicate conditions such as:

  • Abdominal aortic aneurysm
  • Abscess
  • Appendicitis
  • Cholecystitis
  • Gallstones
  • Hydronephrosis
  • Kidney stones
  • Pancreatitis (inflammation in pancreas)
  • Spleen enlargement ( splenomegaly )
  • Portal hypertension
  • Liver tumors
  • Obstruction of bile ducts
  • Cirrhosis

Risks

There is no known risk. You are not exposed to ionizing radiation.

FAQ

Why would a doctor do an abdominal ultrasound?

  • An abdominal ultrasound can help your doctor evaluate the cause of stomach pain or bloating. It can help check for kidney stones, liver disease, tumors, and many other conditions. Your doctor may recommend that you have an abdominal ultrasound if you’re at risk of an abdominal aortic aneurysm.

What is checked in an abdominal ultrasound?

  • Abdominal ultrasound is a type of imaging test. It is used to look at organs in the abdomen, including the liver, gallbladder, spleen, pancreas, and kidneys. The blood vessels that lead to some of these organs, such as the inferior vena cava and aorta, can also be examined with ultrasound.

What diseases can an abdominal ultrasound detect?

Providers use abdominal ultrasound tests to detect

  • Bladder stones.
  • Enlarged spleen.
  • Gallstones.
  • Cholecystitis (gallbladder inflammation).
  • Pancreatitis (inflamed pancreas).
  • Cancer, such as stomach cancer or pancreatic cancer.
  • Fatty liver disease.
  • Abdominal aortic aneurysm (a bulge in the aorta wall in your midsection).

Can you drink water before an abdominal ultrasound?

  • You must not eat or drink for eight hours before your exam. Water and taking medication are okay. If an ultrasound pelvis is also being done, for female patients, please drink 32 ounces of water one hour before the scan. You can go to the bathroom to relieve yourself, as long as you keep drinking water.

Can abdominal ultrasound detect bowel problems?

  • Over the past few years, thanks to technological progress in ultrasonography, followed by the increasing experience of physicians, intestinal ultrasound has become an important diagnostic tool in the detection of bowel diseases.

Will an abdominal ultrasound show inflammation?

  • This type of ultrasound can detect changes in blood flow through the abdomen. Because the abdomen contains many important body parts, several problems can occur there. Such problems could range from inflammation to abnormal hormonal responses, and they can sometimes indicate the presence of another condition.

Should an abdominal ultrasound hurt?

  • An abdominal ultrasound should not be painful and most patients don’t experience any discomfort. However, if you have tenderness it may be uncomfortable when the transducer is moved over that part of your belly.

Can you see your intestines on an ultrasound?

  • An abdominal ultrasound is an imaging test. It allows your doctor to look inside your abdomen (often referred to as your stomach or belly) without surgery. The abdomen is the part of your body that contains your stomach, large and small intestines, pancreas, liver, and gallbladder.

What does red on an abdominal ultrasound mean?

  • By definition, flow towards the transducer is depicted in red while flow away from the transducer is shown in blue. Different shades of red and blue are used to display velocity. Lighter shades of color are assigned to higher velocities.

Can ultrasounds detect ulcers?

  • Patients commonly ask if ultrasounds can show stomach ulcers. Ultrasound technology cannot find ulcers, but other types of diagnostic tests can. Doctors usually request a test for the bacteria that causes stomach ulcers, an x-ray series, or an endoscopy.

What do you wear for an abdominal ultrasound?

  • Preparations – Abdominal Ultrasound
  • You should wear comfortable, loose-fitting clothing for your abdominal ultrasound. You may need to remove clothing and be asked to wear a gown during the procedure.

Can I have coffee before the abdominal ultrasound?

  • If you eat anything within 6 hours of your exam, your gallbladder may not look normal in the ultrasound images. During your fast, you may drink clear liquids such as black coffee, tea, and water. Do not drink anything that contains fat or sugar.

Can you see colon polyps on an ultrasound?

  • Polyps do show up on ultrasound, though it is not usually the primary screening method for polyps. Colon polyps are often diagnosed during screening to check for colon or rectal cancer. Tests include Colonoscopy.

Can an abdominal ultrasound detect tumors?

  • Ultrasound cannot tell whether a tumor is a cancer. Its use is also limited in some parts of the body because the sound waves can’t go through the air (such as in the lungs) or through bone.

Can an ultrasound detect IBS?

  • The following types of tests are not necessary to help diagnose irritable bowel syndrome: ultrasound. rigid or flexible sigmoidoscopy. colonoscopy or barium enema.

Can an ultrasound detect a hernia?

  • An ultrasound uses sound waves to generate images of your pelvic area and abdomen. In women, ultrasounds can help your doctor rule out other causes of pain, such as ovarian cysts or fibroids. In men, an ultrasound can help diagnose inguinal or scrotal hernias.

Will the ultrasound tech tell me if something is wrong?

  • If your ultrasound is being performed by a technician, the technician most likely will not be allowed to tell you what the results mean. In that case, you will have to wait for your doctor to examine the images. Ultrasounds are used during pregnancy to measure the fetus and rule out or confirm suspected problems.

Can an ultrasound tell the difference between a cyst and a tumor?

  • Ultrasound imaging can help determine the composition of a lump, distinguishing between a cyst and a tumor. Also known as sonography, it involves the use of high-frequency, real-time sound waves to create an image.

Which is better CT scan or ultrasound?

  • In terms of procedures, ultrasound is used in prenatal care, removal of gall stones, kidney stones, and many other types of medical applications. In both cases, CT and ultrasound are often preferable over regular x-rays. The CT offers a much better image and it can be directed precisely at a target area.

Do I need to shave for an abdominal ultrasound?

  • Usually, the ultrasound is performed vaginally, it is not necessary to shave.

Can abdominal ultrasound detect fatty liver?

  • Ultrasonography allows for reliable and accurate detection of moderate-severe fatty liver, compared to histology. Because of its low cost, safety, and accessibility, ultrasound is likely the imaging technique of choice for screening for fatty liver in clinical and population settings.

Why can’t you drink water before a liver ultrasound?

  • Understanding Liver Ultrasound Fasting
  • Liver ultrasound fasting should not be taken lightly. The reason for liver ultrasound fasting is because liquids and foods in your system, in particular your stomach, can distort the outcome of the exam.

Can I brush my teeth before the abdominal ultrasound?

  • Do not eat or drink anything after midnight the night before your procedure – including chewing gum (which causes gas bubbles that will “cloud” your exam). You may brush your teeth. Please continue to take your medication(s) as prescribed (it is ok to swallow medication with a small amount of water).

What is a fat-free dinner before an abdominal ultrasound?

  • Abdominal Ultrasound for gallbladder: You must eat a fat-free diet during the 12 hours before your test. Good food choices are clear broth, steamed vegetables, and fresh vegetables and fruits. Do not eat meats, seafood, poultry, dairy, fried foods, margarine, butter, and oils.

Can you see the pancreas on an abdominal ultrasound?

  • An ultrasound of your abdomen will show the pancreas and the surrounding area, including your liver. It can show if a tumor is a present and its size. You will lie on your back for the procedure. A gel will be spread onto your abdomen and a small device called a transducer will be moved across the area.

What are the symptoms of an abdominal hernia?

Signs and Symptoms of a Hernia
  • An obvious swelling beneath the skin of the abdomen or the groin. …
  • A heavy feeling in the abdomen sometimes comes with constipation or blood in the stool.
  • Discomfort in the abdomen or groin when lifting or bending over.
  • A burning or aching sensation at the bulge.

What is the purpose of abdominal ultrasound?

  • An abdominal ultrasound is a noninvasive procedure used to assess the organs and structures within the abdomen. This includes the liver, gallbladder, pancreas, bile ducts, spleen, and abdominal aorta. Ultrasound technology allows quick visualization of the abdominal organs and structures from outside the body.

What do you wear for an abdominal ultrasound?

  • Preparations – Abdominal Ultrasound
  • You should wear comfortable, loose-fitting clothing for your abdominal ultrasound. You may need to remove clothing and be asked to wear a gown during the procedure.

Can you drink water before an abdominal ultrasound?

  • You must not eat or drink for eight hours before your exam. Water and taking medication are okay. If an ultrasound pelvis is also being done, for female patients, please drink 32 ounces of water one hour before the scan. You can go to the bathroom to relieve yourself, as long as you keep drinking water.

How do I prepare for an abdominal ultrasound?

  • You must not eat or drink for eight hours before your exam. You can drink a little water to take your medications. Please note: Kidney Ultrasound examinations do not require preparation.

Frequently Asked Questions

Is this article a replacement for a doctor?

No. It is educational content only. Patients should consult a qualified clinician for diagnosis and treatment.

When should I seek urgent care?

Seek urgent care for severe symptoms, rapidly worsening condition, breathing difficulty, severe pain, neurological changes, or any emergency warning sign.

References

Add references, clinical guidelines, textbooks, journal articles, or trusted medical sources here. You can edit this area later with a custom field named _rx_references.

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Written by Dr. Harun Ar Rashid, MD - Arthritis, Bones, Joints Pain, Trauma, and Internal Medicine Specialist

Dr. Md. Harun Ar Rashid, MPH, MD, PhD, is a highly respected medical specialist celebrated for his exceptional clinical expertise and unwavering commitment to patient care. With advanced qualifications including MPH, MD, and PhD, he integrates cutting-edge research with a compassionate approach to medicine, ensuring that every patient receives personalized and effective treatment. His extensive training and hands-on experience enable him to diagnose complex conditions accurately and develop innovative treatment strategies tailored to individual needs. In addition to his clinical practice, Dr. Harun Ar Rashid is dedicated to medical education and research, writing and inventory creative thinking, innovative idea, critical care managementing make in his community to outreach, often participating in initiatives that promote health awareness and advance medical knowledge. His career is a testament to the high standards represented by his credentials, and he continues to contribute significantly to his field, driving improvements in both patient outcomes and healthcare practices. Born and educated in Bangladesh, Dr. Rashid earned his BPT from the University of Dhaka before pursuing postgraduate training internationally. He completed his MD in Internal Medicine at King’s College London, where he developed a special interest in inflammatory arthritis and metabolic bone disease. He then undertook a PhD in Orthopedic Science at the University of Oxford, conducting pioneering research on cytokine signaling pathways in rheumatoid arthritis. Following his doctoral studies, Dr. Rashid returned to clinical work with a fellowship in interventional pain management at the Rx University School of Medicine, refining his skills in image-guided joint injections and minimally invasive pain-relief techniques.