Quality Assurance; Winston-Lutz Test - Brainlab RT/RS Hardware User's Manual

QUALITY ASSURANCE

6 QUALITY ASSURANCE
6.1

Winston-Lutz Test

Overview
The need for high geometric and dosimetric accuracy in stereotactic radiotherapy/radiosurgery
requires a special quality assurance program.
Brainlab recommends conducting a Winston-Lutz quality assurance test using the Phantom
Pointer.
The quality procedures described in this chapter must be performed prior to each patient
treatment.
The Winston-Lutz test needs to be performed prior to patient setup. If the Winston-Lutz test
indicates a deviation greater than 1 mm, due to a mechanical misalignment of the Linac,
this must be taken into consideration during the treatment planning.
Hardware User Guide Rev. 4.9 RT / RS Stereotactic Hardware 89