Ultrasound evaluation of the abdomen is a commonly performed
examination worldwide. This modality offers the advantages of
relative low cost, portability, real-time capabilities, and the
lack of radiation and intravenous iodinated contrast material.
Sonography is the first-line diagnostic imaging technology for the
evaluation of suspected hepatobiliary disease processes.
However, sonography has not established preeminence as a primary
technique for the evaluation of the patient with nonspecific
abdominal pain because of the limitations caused by artifacts
produced by gas in the stomach and upper intestine.
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