When treating high grade gliomas abutting critical structures, how do you balance tumor dose with critical structure constraints?
Do you prefer to underdose the tumor to meet critical structure constraints such as the optic chiasm? Or to you opt to aggressively treat the tumor and get full coverage regardless of critical strutures?
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Do you exceed defined constraints to OARs to allow for better tumor coverage for high grade gliomas?
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1 Answer
Mednet MemberInvited Expert
Radiation Oncology · Cleveland Clinic
Answered on
The CTV should be shaved away from critical structures if they are likely not to be involved with tumor. That said, expansion with PTV can put dose back into these critical structures and it may be hard to achieve full coverage without exceeding critical structure constraints. Although for PTV, we a...
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