Patient setup using a 3D laser surface scanning system

摘要

The 3D laser surface scanning system GALAXY (LAP, Germany) can be used to set up patients in the treatment room. The accuracy of this system was analyzed. A dummy was used to simulate a radiation target in the pelvic region. The initial setup of the dummy on the treatment table was used to create a reference surface scan. After this the coach's position of the treatment machine was changed (vertical, lateral, longitudinal). Within a wide range (vertical: [-13 cm, 19 cm], lateral: [-15 cm, 12 cm], longitudinal: [-13 cm, 15 cm]) the shift of the dummy was measured accurately. As a result the GALAXY is a useful tool for fast and accurate patient setup.