Anadjustable gastric band, commonly called a lap-band is an inflatable silicone device placed around the top portion of the stomach to treat obesity, intended to slow consumption of food and educe the amount of food consumed.
Correct and sensitive adjustment of the band is imperative for weight loss and the long term success of the procedure.
Adjustments may be performed using an X-ray fluoroscope so that the radiologist can assess the placement of the band, the port, and the tubing that runs between the port and the band.
The patient is given a small cup of liquid containing a clear or white radio-opaque fluid similar to barium. When swallowed, the fluid is clearly shown on X–ray and is watched as it travels down the esophagus and through the restriction caused by the band.