Bootstrap Framework 3.3.6

[nicola_snell]

We have had SimRT installed for nearly 2years and only now looking at using it clinically due to staffing etc.

We have mastered the QA, but we are struggling when the couch moves into the bore in keeping the patch visible. We have noticed that after the bed has moved into the bore by about 10cm from the isocentre the patch disappears. Has anybody got any experience of this or any tips to help us progress.

We are hoping to use this for our gated CT's and our DIBH breasts instead of the Varian RGSC system.
Thank you.

[joshua_naylor]

Hi!

We had to do quite a bit of optimising for this on our system, SimRT seems more sensitive to lighting conditions than AlignRT i think because the patch is obviously much smaller, there is one pod and the bore can shadow the surface. it is worth the effort though, as SimRT is so much better than RGSC

ensure you have a good quality surface and get the lighting correct, tweak skin tone if needed. We had to have a clin app and a service engineer tweak a few parameters so it might be worth getting them to visit you

if you can adjust the table height it may help so the camera can see the surface better. is this on patients or a phantom?

place patch on a stable location, and you can also do a test capture at the start and end of where the couch will go to ensure you have good coverage. it might be best to scan from in to out rather than going in as it sounds like you are doing.

Make sure you have couch velocity set correctly, and also ensure y ou have characterised the couch ramp up as well