VMAT
Home > VMAT
Our Treatments
VMAT
Volumetric Modulated Arc Therapy (VMAT)
- Definition: An advanced form of IMRT (Intensity-Modulated Radiotherapy) where the linear accelerator rotates around the patient, delivering radiation continuously as it moves in arcs.
- Technique: Modulates dose rate, gantry speed, and multileaf collimator (MLC) positions simultaneously for highly conformal dose delivery.
- Treatment Time: Much faster than conventional IMRT—often just a few minutes.
- Planning: Involves inverse planning using sophisticated software to optimize dose distribution.
Key Features
Feature
Description
Delivery
Continuous radiation during gantry rotation (typically 1–2 arcs)
Precision
High, with excellent sparing of nearby normal tissues
Applications
Brain, head & neck, prostate, pelvic, thoracic, and GI tumors
Advantages
Faster delivery, better patient comfort, reduced intrafraction motion
Benefits
- Improved target coverage and organ sparing
- Reduced treatment time compared to static IMRT
- Suitable for complex-shaped tumors