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Gallstones Ultrasound

Public Sono Ai Report guide about Gallstones Ultrasound, with context, preparation notes, references and safety limits for ultrasound use.

Ágarus Serviços e Soluções em Medicina LTDACNPJ 24.740.646/0001-73Fortaleza - CE, BrazilUpdated on June 19, 2026

What are gallstones

Gallstones, also called biliary calculi or cholelithiasis, are hardened materials inside the gallbladder. Some people discover them by chance and have no symptoms. Others have episodes of pain, especially when the stone hinders the flow of bile or irritates the gallbladder.

Ultrasound does not decide the treatment alone. It helps to show if there are stones, biliary sludge, indirect signs of inflammation, dilation of the bile ducts, or technical limitations. The final interpretation depends on symptoms, medical examination, and often, blood tests.

What ultrasound helps to see

  • If there are gallstones inside the gallbladder and, when possible, if they appear mobile or impacted.
  • If there is biliary sludge, gallbladder wall thickening, pericholecystic fluid, or sonographic Murphy's sign.
  • If there is bile duct dilation or measurement of the common bile duct when it was adequately visualized.
  • If the gallbladder was contracted, poorly distended, or limited by preparation.
  • If other abdominal organs, such as the liver and pancreas when visible, have findings relevant to the request.

Preparation and fasting

In many facilities, exams that evaluate the liver, gallbladder, bile ducts, pancreas, and upper abdomen require fasting. This helps the gallbladder to distend and reduces gases that interfere with the image. The exact rule, however, is from the clinic performing the exam.

  • Confirm how many hours of fasting are required for your request.
  • If you have diabetes, use insulin, have kidney disease, are pregnant, or have dietary restrictions, ask for individual guidance.
  • Bring previous exams and inform if you have already had your gallbladder removed.
  • Do not delay urgent care to comply with preparation if there are warning signs.

Terms appearing in the report

An isolated word does not define severity. The report must be read as a whole: stones, biliary sludge, wall, fluid, sonographic Murphy\'s sign, common bile duct, and bile ducts tell a more useful story when linked to symptoms.

Tabela: Term | Simple reading | Caution

What the exam does not conclude alone

Ultrasound can find gallstones, but it does not alone determine if the pain comes from them, if surgery is needed, if there is a severe infection, or if there is a stone in the common bile duct. Some situations require blood tests, urgent evaluation, computed tomography, magnetic resonance cholangiopancreatography (MRCP), endoscopy, or another method.

It is also important to respect technical limits: a contracted gallbladder, gases, body habitus, pain, and a non-visualized common bile duct reduce the strength of any conclusion.

When not to wait for a scheduled appointment

Seek medical advice or emergency care if there are warning signs. Online content does not replace clinical screening when the condition appears acute.

Useful questions to bring

Tabela: Question | Why it helps

Public sources used

This page combines plain language sources for patients and technical references to preserve the boundary between ultrasound findings, symptoms, and medical decisions.

Other useful pages

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This page summarizes operational practices in plain language. It does not replace legal advice, an agreement with your institution or internal medical-record policy.