On some cases I am witnessing that the choice of a gated capture in the lowest point in the breathing traces does not correspond to the the lowest vertical point in the actual patient breathing cycle. I have confirmed with visionRT that the gated breathing trace is only tracking the vertical. This difference may be related to the ROI used to do the gated capture and the patient monitoring. Have others witnessed this? Have you done any acceptance of this feature and any routine QA of this feature? Any suggestions?
Hi Steven
I saw you post on the USA med phys. I don’t think it will be that significant. The RPM/RGSC only tracks vertical as well, and that is sufficient for this purpose. The benefit of SGRT over RPM is that it is the actual surface not a block as i am sure you know. The purpose of the gated capture is only to choose an optimal reference surface (mid-cycle), so that the surface will be ‘matchable’ at all phases of the breathing cycle. if you want gating, then the best option is the respiratory module. The gated capture doesn’t use an ROI you Ctrl+click. I did not do acceptance testing or routine QA on it and don’t think it is necessary. You could chat to your local Vision RT clin app if you have concerns.
josh