SRS/SBRT 1 mm for DL3 Movable Red laser home position 1.0 mm for 1.5 mm for non-SRS/SBRT SRS/SBRT 1.0 mm for DL4 Image registration/alignment (in x,y, and z directions) 1 mm (i.e. Position/Reposition Test) DL5 MVCT quality No artefact DL6 Backup tape status No error, changed DL7 Safety System Systems TQC Complete Table2: Monthly Quality Control Tests Designator Test Performance Tolerance Action Monthly ML1 Static treatment beam 2% 3% output ML2 Rotational treatment 1.5% 2% beam output ML3 Monitor chamber 1.5% 2% constancy ML4 Treatment beam 1.5% 2% output variation with gantry angle 0.8% with DCS 1% with DCS ML5 Beam quality 0.8% 1% (PDD10 or
1 mm for SRS/SBRT DL3 Movable Red laser home position 1.0 mm for 1.5 mm for non-SRS/SBRT 1.0 mm for DL4 Image registration/alignment (in x,y, and z directions) (i.e. Position/Reposition Test) 1 mm DL5 MVCT quality No artefact DL6 Backup tape status No error, changed DL7 Safety System Systems TQC Complete Table2: Monthly Quality Control Tests Designator Test Performance Tolerance Action Monthly ML1 Static treatment beam output 2% 3% ML2 Rotational treatment beam output 1.5% 2% ML3 Monitor chamber constancy 1.5% 2% ML4 Treatment beam output variation with gantry angle 1.5% 0.8% with DCS 2% 1% with DCS ML5 Beam quality 0.8% 1% (PDD10 or SRS/SBRT
HTT-2015-11-061.docx