Model LIU-0312
Liu Calibration Check Phantom
The Model LIU-0312 Calibration Check Phantom is a convenient, water-filled acrylic phantom designed to be used for output checks and calibration of megavoltage machines in a radiotherapy department. This economical phantom can be used for both photon and electron beam QA.
The LIU Phantom is an acrylic cube with three custom-made ionization chamber holders for your particular chamber. Two small filler holes are in place to facilitate the filling and emptying of the phantom with water. A crosshair and the outline of a 10cm x 10cm field are inscribed on the four windowed walls.
The three-chamber holder cavities are located at depths of 1cm, 2cm, 5cm, and 10cm, allowing measurements at dmax for photon beams. The chamber holder cavities are strategically located so that no cavity interferes with another cavity during measurements.
The LIU phantom allows for chamber placement to be consistent from week to week during measurements. Quick laser alignment checks can also simultaneously be performed.