Multileaf Collimators

Multileaf Collimators

Gammabeam™ Multileaf Collimator 60

The Original Radiotherapy Shielding Block Mold Cutter

A Multileaf Collimator is now available as an optional accessory for the Equinox™ product line, providing 3D Conformal Radiation Therapy (3D CRT) and Intensity Modulated Radiation Therapy (IMRT) capability.

The Best Theratronics Multileaf Collimator 60 (MLC 60) is custom designed for seamless integration with the Equinox 100 therapy machine.  The Equinox™ MLC 60 system is the most advanced Cobalt Teletherapy system available.

Cobalt-60 is widely used for conventional RT in most of the world, but has lacked the required technical research and development to facilitate IMRT/IGRT…



Number of leaves 60
Maximum field size 30 x 30 cm
Leaf width at isocenter 10 mm
Leaf over-travel distance 75 mm
Leaf interdigitation Yes
Maximum projected leaf speed 18 mm/s
Focused leaves Yes
Leaf material Tungsten
Inter-leaf leakage < 2.0%
Patient clearance (from isocenter) 40 cm
Two independent position sensors per leaf Yes
Integrated Safety Interlocks Yes
MLC Console Software Yes
Record and verify Yes
Patient Database Yes
DICOM-RT compatible Yes
Removable MLC for standard Equinox operation Yes