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RUBY

Daily QA Workflow

1 RUBY Positioning (3 minutes)

  • Position QFIX indexing bar on a defined couch indexer (for example position H2)
Position QFIX indexing bar on a defined couch indexer (for example position H2)
  • Position the tilting base (type number PTW T40072.1.030) in accordance with the marking on the indexing bar
Position the tilting base (type number PTW T40072.1.030) in accordance with the marking on the indexing bar
Position the tilting base (type number PTW T40072.1.030) in accordance with the marking on the indexing bar
  • Position RUBY base phantom with Linac QA insert (type number PTW T40072.1.200) on the tilting base and align the laser / the couch to the red line of the phantom
Position RUBY base phantom with Linac QA insert (type number PTW T40072.1.200) on the tilting base and align the laser / the couch to the red line of the phantom

2 SGRT option (2 minutes)

  • Turn SGRT system on (for example Vision RT) and record the analyzed shift
Turn SGRT system on (for example Vision RT) and record the analyzed shift

3 Perform CBCT workflow (5 minutes)

  • Acquire CBCT (3 minutes)
Acquire CBCT (3 minutes)
  • Perform image registration, record the calculated couch shift and apply the couch shift (2 minutes)
Perform image registration, record the calculated couch shift and apply the couch shift (2 minutes)

4 SGRT option

  • Check SGRT system after CBCT and record the deviation
Check SGRT system after CBCT and record the deviation

5 Check RUBY positioning inside the room (3 minutes)

6 Perform Winston Lutz Test (15 minutes)

  • Acquire portal images from different gantry / collimator / couch angles (5 minutes) (minimum 10 MU per field)
Acquire portal images from different gantry / collimator / couch angles (5 minutes) (minimum 10 MU per field)
Acquire portal images from different gantry / collimator / couch angles (5 minutes) (minimum 10 MU per field)
  • Analyze images by visual inspection or by a software tool (for example IsoCheck EPID software) (10 minutes)
Analyze images by visual inspection or by a software tool (for example IsoCheck EPID software) (10 minutes)

7 Perform Dose check (8 minutes)

  • Position QuickCheck Device on the couch
  • Perform QuickCheck workflow for all energie

or

  • Swap LinacQA insert against PatientQA insert (type number PTW T40072.1.100) with ionization chamber (e.g. Semiflex 3D chamber) and connect chamber with electrometer (e.g. UNIDOS Tango) (5 minutes)
  • Irradiate photon fields (for example 10 cm x 10 cm) with all used energies and document dose output (3 minutes)

Back to RUBY

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