MLC

Multi-Leaf Collimator — array of motorized tungsten leaves that dynamically shape the treatment beam. Enables IMRT, VMAT, and complex conformal plans.

Why it matters to buyers: Leaf count drives conformality. 80-leaf vs 120-leaf (Varian Millennium) is a real clinical capability difference.

Why it matters to engineers: Individual leaf motor failure is the top MLC fault. Position accuracy monitored at monthly QA.