Geometry errors

When receiving the results from the participants, the orientation and positioning of the datasets can differ from the original ones. This can happen automatically during import/export by the TPS or be caused by user manipulation.

To check for errors, we ask the participants to upload predefined, representative screenshots (e.g. middle of the tumour). These are then checked for offsets by the data centre.

Another quick test that can be applied is the visual matching of the dose matrix to the CT. The dose fall-off is clearly visible at the patient's surface, therefore offsets can easily be seen.