What a training result means
Matching, contouring, registration, dose displays and other simulation outputs are learning aids. A saved score, improvement graph, completed exercise or comparison with a reference does not certify that a learner is clinically competent or authorised to perform a procedure. Institutions and qualified supervisors remain responsible for their own assessment and clinical supervision.
Scores describe the comparison made by the selected exercise and its current reference. An overlap or distance score is not a complete measure of clinical acceptability. Changes in case, structure, reference, scoring method or task can make results unsuitable for direct comparison. Read the displayed measure and review the images as well as the number.
Reference contours and case review
The library includes references from different sources. An expert-consensus contour may be an algorithmic combination of several observers. A research reference may include automated segmentation that was reviewed or corrected by a clinician. These descriptions are not interchangeable, and neither guarantees that a contour is appropriate for every teaching objective.
Educators should review the selected case, structure definition, image coverage and reference before using it for formal assessment. A label may describe a partial structure within a scan rather than a complete organ. Review case notes and source limitations. Differences from the reference can be a useful discussion of anatomy, technique or observer variation.
Only users with the appropriate permissions may publish shared teaching references or case defaults. Recording a change does not by itself demonstrate educator approval. Keep the review status and source attribution with the case.
Fusion and drawing assistance
Saved image-registration defaults provide a starting position for practice. Manual or automatic alignment must be inspected in all relevant planes; anatomy, patient positioning, coverage and acquisition time can differ between scans. An alignment box limits the search region and does not create missing anatomy.
Smoothing, magic-wand selection and interpolation can help construct a contour but can also include unwanted tissue or remove detail. Inspect and correct the result, including slices between drawn anchors. These tools do not replace anatomical knowledge or qualified review.
Use of scans and personal information
Use approved teaching material that you are entitled to use. Do not upload identifiable patient scans, patient names or clinical records to this educational service. Removing a visible name alone may not remove identifiers in metadata, overlays or image content.
Do not attempt to identify participants in published de-identified datasets. If you notice possible identifying information or an inappropriate upload, stop sharing it and contact enquiries@radiotherapyeducation.org with enough detail to locate it, without copying the patient information into an ordinary email.
Safe use on a device or in VR
Choose a device and display suitable for the exercise. Small screens, touch input, image scaling, compression and browser limitations can affect visibility and precision. Zoom and inspect the appropriate plane, and use a larger display or suitable pointing device where the task needs finer control.
For VR, follow the headset manufacturer’s instructions and your institution’s supervision and accessibility arrangements. Use a clear physical space, take breaks and stop if you feel unwell, disoriented or uncomfortable. A simulation does not reproduce every physical, mechanical or radiation hazard of a clinical environment.
Keep real equipment operation separate from simulation. Follow current local protocols, equipment instructions and qualified supervision in clinical practice. Do not use a CETSOL simulation output to command a treatment machine or determine a patient’s care.
Research and regulatory statements
Research described on the website relates to the particular intervention, participants and outcomes studied. It does not guarantee the same improvement for every learner or establish clinical validation, accreditation or regulatory approval of all present tools.
This statement describes the intended educational use. It does not claim that a regulator has approved the platform, that a medical-device classification has been determined, or that a disclaimer alone establishes an exemption.
Help and reporting an issue
If a tool, case or result appears incorrect, pause that exercise and contact enquiries@radiotherapyeducation.org. Include the module, case, structure, relevant slice or action and a screenshot without personal information where useful. An educator can decide whether the case remains suitable for the intended lesson while it is reviewed.