title: Gallstones: a comparison of real-time ultrasonography and cholecystography with surgical correlation.
abstract: Real-time ultrasonography is more accurate and technically more efficient than gray scale ultrasonography in establishing the diagnosis of cholecystolithiasis. In prospective studies accuracy may be as high as 96%, and reflects the use of specific sonographic diagnostic criteria. Retrospective studies, however, reveal a lower accuracy rate of 90%, suggesting that practicing radiologists are not ready to accept these restricting criteria. On the other hand, oral cholecystography (OCG) is well tolerated and gives a reproducible, reliable result independent of technical expertise. It is 96% accurate in detecting the presence of gallstones and carries a sensitivity of .97. Both studies are prone to overinterpretation, which skews specificity and adversely affects diagnostic accuracy. In this retrospective review of 234 consecutive cases of cholecystectomy, real-time ultrasound was 90% accurate with a sensitivity of .96 in determining the presence of cholecystolithiasis. Oral cholecystography was 95% accurate with a sensitivity of .97.
authors.forename: E W
authors.initials: EW
authors.lastname: Stokes
authors.forename: S E
authors.initials: SE
authors.lastname: Hallgren
authors.forename: L
authors.initials: L
authors.lastname: Duran
mesh_terms: D000284:Administration, Oral; D000293:Adolescent; D000328:Adult; D000368:Aged; D002763:Cholecystectomy; D002765:Cholecystography / Q000379:methods*; D002769:Cholelithiasis / Q000175:diagnosis* / Q000601:surgery; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007480:Iopanoic Acid; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D014463:Ultrasonography
chemical_list: D007480:Iopanoic Acid