683 / 1498
Volume Definitions for
Planning RT for Lymphomas
•
Role of imaging in radiation planning
3D imaging (with CT supplemented by functional imaging: PET-CT)
The use of diagnostic contrast-enhanced CT is recommended to help to
delineate nodal stations and differentiate nodes from vessels
Ideally, imaging studies with the patient in the treatment position and using
the planned immobilization devices
Four-dimensional CT imaging in determining the ITV for sites that move
with respiration
Acquiring high-quality imaging is fundamental to high-quality RT planning