A simple isocenter checking procedure for radiotherapy treatment machines using the optical pointer.
Techniques are described for simple and convenient checks on the position and size of the isocenter of radiotherapy treatment machines by measuring the displacement of the optical pointer on a flat scale on the surface of the treatment couch.
D006801:Humans; D008722:Methods; D010315:Particle Accelerators; D011785:Quality Assurance, Health Care; D011882:Radiotherapy, High-Energy / Q000295:instrumentation*