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Volume Modulated Arc Therapy (VMAT)

VMAT is the improvisation of the IMRT technique where the dose is delivered in arc (0 to 360 degrees) pattern.

  • This increase in the degree of freedom helps to increase dose conformity.
  • VMAT helps to deliver radiation at higher dose rates, thereby reducing overall treatment to less than 5 min (compared with IMRT treatment which takes approximately 20 to 30 min).
  • Complex plans which are difficult to plan in IMRT can be done with VMAT technique

Volume Modulated Arc Therapy