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Radiation Oncology • Neuro-Oncology
What planning and dose constraints are you using for 5 fraction hypofractionated FRST for vestibular schwannoma? (25Gy in 5 fx)
Vestibulocochlear dose constraint? Trigeminal nerve? CI? GI? How high do you let the hot spot get? Patient has no serviceable hearing on ipsilateral side. 1.1cm VS.
Answer from: Radiation Oncologist at Academic Institution
When using fractionated SRS (fSRT) of 25 Gy in 5 fractions for vestibular schwannomas, I use only 2 constraints: the brain stem and the cochlea if the patient has serviceable hearing. In this case, the only OAR needed is the brain stem, 23 Gy <0.5 cc. I don't worry about the trigeminal nerve as i...
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