Does your facility perform both a free breathing and breath hold scan at the day of CT simulation for your DIBH patients? If so, then send the free breathing scan to the treatment planning system and create a body contour (usually done automatically). After the body contour has been created you can send this free breathing structure set to your AlignRT software. Create a free breathing field based on the breath hold isocenter, and import the free breathing body via the “IMPORT RTSTRUCT” in record. If you do not perform a free breathing scan, then you can use the camera feature in record to capture a free breathing surface. I will save this process to avoid confusion. Hope that helps.
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