[Informative value of various methods of diagnosing chronic calculous cholecystitis].

Resulting from comparative study of informative value of the radionuclide scanning, oral cholecystography, intravenous cholegraphy, ultrasound investigation (USI) performed in 316 patients with chronic calculous cholecystitis, it was established that the most effective method of diagnosis was USI: pre- and postoperative diagnosis coincided in 93.4% of cases.