TABLE 1.

Response Assessment in Neuro‐Oncology resect group's categories for glioblastoma extent of resection.

Class		CE	nCE
1 α		0	≤5 cm3
2 β	2A δ	0	>5 cm3
	2B ψ	≤1 cm3	n/a
3 ω	3A ϕ	≤5 cm3	n/a
	3B γ	>5 cm3	n/a
4 φ		n/a	n/a

Note: Response Assessment in Neuro‐Oncology category names: ^α“supramaximal CE resection”; ^β“maximal CE resection”; ^δ“complete CE resection”; ^ψ“near total CE resection”; ^ω“submaximal CE resection”; ^ϕ“subtotal CE resection”; ^γ“partial CE resection”; ^φ“biopsy” with “no reduction of tumor volume”. ⁷

Abbreviations: CE, contrast‐enhancing; cm³, cubed centimeters; n/a, not applicable to the respective class or subclass definition; nCE, non‐contrast‐enhancing.