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Discuss best practices and workflow advice for Surface Guided Radiation Therapy on all treatment sites.
By SGRT Community United Kingdom flag
#1467
EUROPE (3).jpg
EUROPE (3).jpg (46.06 KiB) Viewed 29475 times
Please feel free to use this thread to ask any questions you might have for our speakers.

Questions from the event are posted below:
By SGRT Community United Kingdom flag
#1474
Do the measurements/margins calculated from SGRT necessarily correlate to PTV margins as internal organs can move independently of external anatomy?
By SGRT Community United Kingdom flag
#1476
What is the workflow when treating? Do you recapture the surface after rotating the couch? How are we sure the patient hasn’t moved when twisting the floor?
By SGRT Community United Kingdom flag
#1477
Would you ever move to a setup process in breath hold only so that you could remove the need to acquire free breathing data set?
By adi_robinson United States flag
#1478
SGRT Community wrote: Tue Dec 05, 2023 4:13 pm How can we be confident that the patient doesn’t move whilst rotating the floor for non-coplanar treatments?
Using AlignRT, we can monitor the patient at every couch angle. At our institution we evaluated the accuracy of our AlignRT system at non-coplanar couch angles and saw submillimeter accuracy (in the order of 0.3mm). With that knowledge we are comfortable treating with non-coplanar angles and monitor the patient using SGRT.
By adi_robinson United States flag
#1479
SGRT Community wrote: Tue Dec 05, 2023 4:13 pm How can we be confident that the patient doesn’t move whilst rotating the floor for non-coplanar treatments?
Using AlignRT, we can monitor the patient at every couch angle. At our institution we evaluated the accuracy of our AlignRT system at non-coplanar couch angles and saw submillimeter accuracy (in the order of 0.3mm). With that knowledge we are comfortable treating with non-coplanar angles and monitor the patient using SGRT.
By adi_robinson United States flag
#1480
SGRT Community wrote: Tue Dec 05, 2023 4:10 pm Did you have any reflective practice in your staff training ?
When training staff on new technologies or workflows we always circle back to see if there is anything we need to improve on. After a few weeks of hands on learning we usually gather and talk about the workflow and if we feel we need more training or experience before moving to the next step or level. Only once we "mastered" a workflow we are ready to move to the next. In the context of SGRT, we started with a breast workflow, moved to DIBH, then explored other body sites until we were at every patient, every fraction.