Consider Using Virtual Bolus

Vulvar cancers are traditionally treated with opposed anteroposterior/posteroanterior photon and en face electron beams, but intensity modulated radiation therapy (IMRT) provides better normal tissue sparing and faster delivery (1, 2, 3). However, IMRT planning can be challenging for a superficial clinical target volume (CTV) because the planning target volume (PTV) tends to extend into the air.

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