[Comparative peroral cholecystography and ultrasonic study of the gallbladder].

Authors--beside the admission of ultrasound examination's obvious priority--do not think that the complete cease of the gall-bladder's X-ray examination is reasonable. They have been found this on the basis of the literature and their own observations. Authors suggest the gall-bladder's examination after a negative ultrasound, if the complaints of the patient are unchanged.