Basics of Head and Neck IMRT Planning and Anatomy - ASTRO
Basics of Head and Neck IMRT Planning and Anatomy - ASTRO
Basics of Head and Neck IMRT Planning and Anatomy - ASTRO
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<strong>Basics</strong> <strong>of</strong> Contouring<br />
• GTV by imaging/physical exam/endoscopy<br />
– CT neck st<strong>and</strong>ard for nodal <strong>and</strong> primary<br />
– PET/CT to guide equivocal<br />
– MRI for NPC, paranasal cavity tumors to<br />
evaluate intracranial spread, mucus, RP<br />
nodes, parapharyngeal, clivus, perineural<br />
• CTV margin 5mm PTV Margins 3-5mm—<br />
trim based on skin, air <strong>and</strong> bone along<br />
with compartments
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