Etymology: L, operare + Gk, chole, bile, angeion, vessel, graphein, to record
a procedure for radiographically outlining the major bile ducts during surgery. It involves the injection of a radiopaque contrast medium directly into the ducts. The procedure is usually performed to detect residual calculi in the biliary tract. See also cholangiography.
op·er·a·tive cho·lan·gi·og·ra·phy(op'ĕr-ă-tiv kō-lan'jē-og'ră-fē)
Radiographic examination of the bile ducts with contrast medium during surgery to detect residual biliary calculi.