Skip Navigation
Department of Health and Human Services
Slide Tray
0 slides

Return to Slide Library


Add Presentation to Slide Tray Presentation:

Comparative Effectiveness and Safety of Radiotherapy Treatments for Head and Neck Cancer

Slide: 12 of 36

Intensity-Modulated Radiation Therapy

IMRT, which has been implemented over the last decade, has further refined radiation dose delivery. IMRT allows the modulation of beam intensity within each field and also enables the use of inverse computer planning, thereby permitting greater control of the dose distribution to the target. With inverse computer planning, the treatment planner defines the tumor target and the normal tissue before a computer algorithm is used to determine beam orientation, the dose to give from each beam, and the amount of modulation to give within each beam. In other words, the computer generates the treatment plan, based on goals defined by the treatment planner.