Gallbladder examinations: a comparison between sonography and radiography.

For the past 50 years, oral cholecystography has been the standard study of radiographic evaluation of the gallbladder with a 98% accuracy level. In the last few years, ultrasound has achieved a similar degree of accuracy; this newer imaging modality has been predicted by some experts to soon become the initial procedure for gallbladder evaluation. It is essential to become aware of the advantages and disadvantages of both oral cholecystography and abdominal ultrasound to be able to use both of them to the best diagnostic advantage.