and Precise Geometric Tests of Linear Accelerators
The Geocheck-1® is a useful tool for the physicist
and service engineer to use together to diagnose problem
issues and to confirm performance issues once the service
All listed tests are quantifiable, with mm markers on
distance scales and mm circles at isocenter centering
tests. There are degree scales as indicators for evaluation
of rotational accuracy.
Tests can be performed at isocenter, and at distances
other than isocenter. Tests can also be performed to the side and
above isocenter, which may be more relevant to patient shapes.
Geocheck-1 provides a fast and quantifiable way to verify
recommended periodic tests of the treatment system. It also provides
the physicist with a method to perform higher level