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Are there consensus target volume definitions for craniospinal irradiation following resection for adult medulloblastoma?

Are GTV, CTV, PTV expansions adopted from pediatric studies? Given our ability to treat the craniospinal axis with accuracy, what would the "modern" spinal PTV look like? Does anyone have a published guideline on target definition? What normal tissue and coverage constraints do you use for adult craniospinal radiation (CSI)?
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Radiation Oncology · University of Arizona
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Craniospinal irradiation (CSI) continues to play an important role in the management of medulloblastoma and other brain tumors that disseminate through the CSF. Because these tumors are more common in the pediatric population, the guidelines adopted for adults are usually adapted from those used in ...

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