Cholecystography
Encyclopedia
Oral cholecystography is a procedure used to visualize the gallbladder
by administering, by mouth, a radiopaque contrast agent that is excreted by the liver. This excreted material will collect in the gallbladder, where reabsorption of water concentrates the excreted contrast. Since only 10% of gallstones are radiopaque, the remaining 90% will appear as translucent on an opaque background in an abdominal x-ray. Current medical practice prefers ultrasound and CT over oral cholecystography.
This technique should not be confused with cystography
, which is imaging of the urinary bladder
.
Gallbladder
In vertebrates the gallbladder is a small organ that aids mainly in fat digestion and concentrates bile produced by the liver. In humans the loss of the gallbladder is usually easily tolerated....
by administering, by mouth, a radiopaque contrast agent that is excreted by the liver. This excreted material will collect in the gallbladder, where reabsorption of water concentrates the excreted contrast. Since only 10% of gallstones are radiopaque, the remaining 90% will appear as translucent on an opaque background in an abdominal x-ray. Current medical practice prefers ultrasound and CT over oral cholecystography.
This technique should not be confused with cystography
Cystography
In radiology and urology, a cystography is a procedure used to visualise the urinary bladder.Using an urinary catheter, radiocontrast is instilled in the bladder, and X-ray imaging is performed. Cystography can be used to evaluate bladder cancer, vesicoureteral reflux, bladder polyps, and...
, which is imaging of the urinary bladder
Urinary bladder
The urinary bladder is the organ that collects urine excreted by the kidneys before disposal by urination. A hollow muscular, and distensible organ, the bladder sits on the pelvic floor...
.