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Topics:
Radiation Oncology • Palliation • Neuro-Oncology • Stereotactic Radiosurgery • Brain Metastases
What is an acceptable maximum "bridging" dose between SRS/SRT targeted brain metastases in close proximity to one another?
What maximum dose do you allow to “connect” adjacent metastatic lesions receiving SRS/SRT?
What is this value for one-, three-, and five-fraction plans?
Answer from: Radiation Oncologist at Community Practice
Hi @Brandon R. Mancini, hello from your neighbor in Flint, I hope this helps: I use "Brain Minus GTV" as my normal brain OAR, and to reduce the risk of radiation necrosis/edema, I try to keep it under:
V12 at 5 cc or less for single fraction SRS; above that I will fractionate
V28.8 at 7 cc or...
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Answer from: Radiation Oncologist at Community Practice
Until we have data, I think 300x10 is adequate.