Flipping Book - TVD

548 / 1311

Delineation methods
How do we delineate the CTV of elective neck?
1. Manual:
• RTOG atlas:
• Gregoire et al. Radiother Oncol 2014;110:172-81.
2. Autosegmentation
• Advantages:
– Improving efficacy:
 reducing intra- & interobserver viriability.
– Improving efficiency:
 Time saving.
 Personnel saving.
 Streamline workflow.
– Enabling adaptive radiotherapy.
• Limitations:
− Unavoidable visual expection & manual editing by an experienced MD.