How do you approach image-guidance and creation of ITV/PTV margins for rib SBRT?
In contrast to lung SBRT, rib lesions may not have a clear lesion on CT that can be delineated to create an ITV after 4DCT. Do you create an ITV, and if so, what is your strategy? Do you have a typical PTV margin you feel is adequate?
1 Answer
Mednet MemberInvited Expert
Radiation Oncology · University of Toronto
Answered on
Delineation of rib lesions indeed can be difficult on planning CT. First step is to determine if patient's clinical symptoms correlate with the target area - I have encountered situations wherein collateral history (whether referring doc, or trainee) can bias treatment intent before meeting the pati...
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