A magnetic resonance cholangiogram (MRC) is a test that can
help doctors look for problems in the abdomen. The image is done from outside
the body, without inserting an instrument.
Doctors can use MRC to locate
gallstones before surgery to remove the gallbladder
(laparoscopic cholecystectomy). But the test is most useful for diagnosing
complications of gallstones, such as obstruction of the bile duct, perforation
of the gallbladder, or