Standard fractionated radiotherapy

What it is

Standard fractionated radiotherapy delivers radiation in many small daily doses (fractions) over several weeks — commonly around six weeks for high-grade gliomas. It is the typical radiation approach for tumors such as glioblastoma, balancing effectiveness against protecting healthy brain.

Understanding Standard fractionated radiotherapy

For high-grade gliomas, the standard radiation course involves daily treatments (on weekdays) over roughly six weeks, building up to a total dose that effectively treats the tumor while sparing healthy tissue as much as possible. For glioblastoma, this is typically given together with the chemotherapy drug temozolomide (as part of the Stupp protocol). The many small fractions take advantage of healthy tissue's ability to recover between treatments. This standard schedule is well-established and is used for most adults with high-grade gliomas who can tolerate it. Variations exist for different situations — for example, hypofractionated schedules (fewer, larger doses over a shorter time) may be preferred for older or frailer patients. The radiation oncologist determines the appropriate total dose, number of fractions, and schedule. Understanding standard fractionated radiotherapy in gliomas clarifies the typical multi-week radiation approach for high-grade tumors.

Why it matters

Understanding standard fractionated radiotherapy helps patients and families know what a typical radiation course for a high-grade glioma involves — small daily doses over several weeks, often with chemotherapy, balancing effectiveness and safety.