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Radiation Oncology • Neuro-Oncology
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?
Answer from: Radiation Oncologist at Academic Institution
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 f...
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