Table 3 CTV definition for IMRT
From: Target volume delineation for radiotherapy of meningiomas: an ANOCEF consensus guideline
Grade | Included structures | RAND/UCLA method | ANOCEF consensus guideline | Additional margin from GTV (mm) | ||||
|---|---|---|---|---|---|---|---|---|
1st round | 2nd round* | 3rd round | ||||||
I | Margin around nodular enhancement | Uncertain | Uncertain | Inappropriate | Inappropriate | NA | ||
Margin along normal meninges | Uncertain | Uncertain | Inappropriate | Inappropriate | NA | |||
Tumor bed | Uncertain | Appropriate | - | Appropriate | NA | |||
Margin around tumor bed | Uncertain | Uncertain | Inappropriate | Inappropriate | NA | |||
Margin in healthy bone | Inappropriate | - | - | Inappropriate | NA | |||
Hyperostosis | Uncertain | Uncertain | Inappropriate | Inappropriate | NA | |||
Whole peritumoral edema | Inappropriate | - | - | Inappropriate | NA | |||
Cranial flap | Inappropriate | - | - | Inappropriate | NA | |||
Venous sinus | Inappropriate | Inappropriate | - | Inappropriate | NA | |||
Other vascular structures (arteries) | Inappropriate | Inappropriate | - | Inappropriate | NA | |||
Optic nerve | Inappropriate | Inappropriate | - | Inappropriate | NA | |||
Cranial nerves | Inappropriate | Inappropriate | - | Inappropriate | NA | |||
II | Margin around nodular enhancement | Appropriate | - | - | Appropriate | 5 | ||
Margin along normal meninges | Appropriate | - | - | Appropriate | 5 | |||
Tumor bed | Appropriate | - | - | Appropriate | NA | |||
Margin around tumor bed | Appropriate | - | - | Appropriate | 5 | |||
Margin in healthy bone | Uncertain | Inappropriate | - | Inappropriate | NA | |||
Hyperostosis | Uncertain | Appropriate | - | Appropriate | 5 | |||
Whole peritumoral edema | Inappropriate | - | - | Inappropriate | NA | |||
Cranial flap | Inappropriate | - | - | Inappropriate | NA | |||
Venous sinus | Uncertain | Uncertain | Appropriate | Appropriate | 5 | |||
Other vascular structures (arteries) | Inappropriate | Inappropriate | - | Inappropriate | NA | |||
Optic nerve | Inappropriate | Inappropriate | - | Inappropriate | NA | |||
Cranial nerves | Inappropriate | Inappropriate | - | Inappropriate | NA | |||
III | Margin around nodular enhancement | Appropriate | - | - | Appropriate | 10 | ||
Margin along normal meninges | Appropriate | - | - | Appropriate | 10 | |||
Tumor bed | Appropriate | Appropriate | - | Appropriate | NA | |||
Margin around tumor bed | Appropriate | - | - | Appropriate | 10 | |||
Margin in healthy bone | Uncertain | Uncertain | Appropriate | Appropriate | 10 | |||
Hyperostosis | Appropriate | - | - | Appropriate | 10 | |||
Whole peritumoral edema | Inappropriate | - | - | Inappropriate | NA | |||
Cranial flap | Inappropriate | - | - | Inappropriate | NA | |||
Venous sinus | Uncertain | Appropriate | - | Appropriate | 10 | |||
Other vascular structures (arteries) | Uncertain | Uncertain | Inappropriate | Inappropriate | NA | |||
Optic nerve | Uncertain | Uncertain | Appropriate | Appropriate | 10 | |||
Cranial nerves | Uncertain | Uncertain | Appropriate | Appropriate | 10 | |||