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How effective is ultrasound at detecting gallstones?

Ultrasound is about 98% accurate in detecting gallstones, hard, pebble-like deposits that form in the gallbladder, the organ just below your liver. Ultrasound is a painless, noninvasive procedure that uses sound waves to project an image of interior body parts up on a screen.
In addition to detecting gallstones, ultrasound can also identify thickening or swelling of the gallbladder. If you are diagnosed with gallstones, your doctor may or may not order other tests such as a computed tomography (CT) scan or magnetic resonance imaging (MRI) in addition to ultrasound.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.