Intensity modulated radiation therapy

Intensity modulated radiation therapy (IMRT) uses multiple beams and angles (multi-leaf collimator) that can deliver varying intensities of radiation to the tumor to maximize the dose to the tumor and decreased or no dose to the surrounding tissue. For IMRT, the technical goal is to improve the targeting of the radiation to the tumor to minimize damage of normal tissue. 

Status: Decision completed

Why is IMRT being reviewed?

There is increasing use of IMRT for a variety of cancers. The impact of this technology on patient-important outcomes compared to current conventional (coronal or standard) EBRT is unclear.

Primary criteria ranking

  • Safety = High
  • Efficacy = Medium
  • Cost = High

Documentation

Assessment timeline

  • Draft key questions published: February 21, 2012
  • Public comment period: February 21 to March 6, 2012
  • Draft report published: July 6, 2012
  • Public comment period: July 6 to August 6, 2012
  • Final report published: August 20, 2012
  • HTCC public meeting: September 21, 2012