Configurable 120 Leaf Multileaf Collimator
for precise field shaping
Our EMM120 Standard MLCs are compact, robust and cost-effective solutions for clinical and OEM beam-shaping applications. With a 40×40 cm field shaped by 120 leaves and a highly dynamic speed control, they cover a wide range of use cases – offering precise field shaping, optimized leaf geometry and compatibility with conventional radiotherapy system architecture.
Leaf Configuration
- Standard: 120 leaves, 5 mm width (central), 10 mm width (peripheral)
- Shuttle system to reach full (101%) overtravel
Motor & Drive System
- Industry gold standard DC motors with integrated encoders
- High-speed leaf motion (> 50 mm/s) at 200 Hz control frequency and micropositioning (<0.2 mm)
- 40 kHz double-loop PID control with high reproducibility
Control Integration
- TCP/IP or UDP protocol support
- Real-time motion verification with closed-loop feedback
- Various options for secondary feedback system / encoders
Materials & Durability
- 80 mm height Tungsten leaves (≥95 % W)
- Ultraprecise machining and tongue & groove design ensures <<1 % interleaf leakage for optimal dose conformity
Why Conventional Collimators Fall Short in Radiotherapy
Modern radiotherapy demands fast, accurate beam shaping and reliable dose conformity. Conventional collimators often lack the control precision, integration flexibility, and durability required for OEM and clinical use.
Limited field sizes and accuracy
MLCs typically are designed for the very device they are mounted on – applying it to any other machine will come with many hard to accept compromises.
Integration Complexity
Many beam-limiting devices rely on closed or proprietary interfaces that slow OEM development and LINAC integration.
Availability
MLCs are traditionally considered core IP to any LINAC manufacturer. We make the technology vendor agnostic with global availability. So you don’t have to “reinvent the wheel”.
Maintenance and Downtime
Non-modular designs require full system disassembly during service, increasing cost and downtime in clinical environments.
Advantages and Benefits
The EMM120 Standard MLC eliminates these limitations through gold standard specs, precise motor control, and open integration protocols. Built in Germany under ISO 13485, it provides stable beam shaping, long-term reliability, and OEM-ready interfacing for global radiotherapy systems.
- 120-leaf 40×40 cm² setup for submillimeter field accuracy in IMRT and VMAT
- Tungsten leaf design minimizes penumbra and leakage below 1 %
- Open TCP/IP and UDP control for smooth LINAC integration
- DC drive units reach >50 mm/s for dynamic beam shaping
- Compact build for quick OEM setup and easy servicing
- CE-documented and ISO 13485 / MDR compliant system
Precision Dynamic Beam Shaping
Using high resolution PID, our collimators achieve submillimeter resolution and consistent leaf positioning – critical for stereotactic and VMAT protocols.
Compatibility Across Platforms
Fully integrable into LINACs and gantry systems OEM agnostic, thanks to open interface protocols, standardized dimensions, and modular mounting plates.
Quality You Can Trust
Building MLC for more than 30 years. Manufactured under ISO 13485:2016 and MDR-compliant quality systems.
Maintenance & Lifecycle Efficiency
Low-wear mechanics and service-friendly components reduce downtime and maintenance intervals, supporting long-term operational reliability.
Get in Touch
Integrate Proven Beam Shaping into Your LINAC Workflow
Contact us to learn how to integrate the EMM120 Standard Multileaf Collimator for accurate beam shaping, fast LINAC integration, and reliable OEM system performance in clinical radiotherapy applications.
- Reliable beam shaping with high-precision tungsten leaves
- Seamless LINAC and gantry integration for OEMs and clinics
- Over 30 years of experience in radiation therapy hardware
Seamless Integration
into Radiotherapy Workflows
The EMM120 Standard MLC integrates directly into OEM LINAC architectures. Its modular control interface connects via Ethernet for real-time synchronized beam logic, position verification, and automatic calibration routines. SDK ensures compatibility with both legacy and next-generation LINAC platforms.
Fully compliant with EU MDR 2017/745 and produced under ISO 13485, the system provides the regulatory framework for the integration into OEM radiation therapy hardware. The compact structure and service-friendly mechanics simplify installation and maintenance, reducing setup times and ensuring operational stability.
Our Applications
for Clinical and OEM Radiotherapy Systems
Precise, adaptable, and fully integrable – the EMM120 Standard MLC supports a wide range of radiotherapy applications and development platforms. From stereotactic protocols to LINAC research setups, it delivers accurate, repeatable beam shaping for photon-based systems.
- IMRT and VMAT beam modulation
- 3D-CRT and conformal therapy
- SRS and cranial treatments
- Thoracic and pelvic field shaping
- Prostate and head & neck radiotherapy
- FLASH Research and prototype LINAC development
Stereotactic Radiotherapy
VMAT & IMRT Protocols
Head & Neck Radiotherapy
Thoracic & Pelvic Fields
Penumbra in Radiotherapy
Fractionated Radiotherapy
Learn more about our beam-shaping solutions for OEM partners
Discover how gKteso’s multileaf collimator technology supports OEM integration, clinical validation, and next-generation radiotherapy systems. From research prototype to certified LINAC integration, our engineering teams deliver scalable beam-shaping solutions for clinics and research centers worldwide.
Schedule an appointment now!
Frequently Asked Questions
What is the EMM120standard multileaf collimator (MLC) used for in radiotherapy?
The EMM120 Standard MLC is a beam-shaping devices used in photon-based radiotherapy or FLASH therapy. They allow for precise field shaping (i.e. beam shaping or beam limiting device), ensuring conformal dose delivery in treatments such as IMRT and VMAT. gKteso’s MLCs are optimized for clinical reliability and seamless integration with OEM LINAC architectures.
Are your standard MLCs compatible with all major LINAC systems?
Our standard MLCs are not designed as retrofit upgrades for already installed clinical LINACs. Instead, they serve as off-the-shelf multileaf collimator solutions for fast integration into standard LINAC configurations during system development (such as new vendors or projects within larger OEMs) or for laboratory testing (e.g. within FLASH projects). Supporting protocols on any level (from PWM to cmd level), they enable seamless integration into any LINAC PLC control architectures.
What leaf configurations are available in gKteso’s standard MLC portfolio?
Our portfolio includes models from as small as 1.5 mm to 10 mm leaf widths. Single and double stack, straight or curved leave shapes (single or double focus).
How do your MLCs reduce penumbra in radiotherapy?
Providing an optimized leaf geometry, our standard MLCs minimize lateral dose spread (penumbra), enabling sharper beam edges – especially important in stereotactic and head & neck treatments.
Do gKteso collimators meet EU and MDR medical device requirements?
Absolutely. All standard MLC systems are manufactured under ISO 13485 and are MDR-compliant. We offer full CE documentation and can support OEMs with conformity assessment procedures.
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Customized MLC
Tailored for OEMs, research centers, and novel radiotherapy platforms, our customized MLCs are co-developed to meet unique geometric, electronic, or integration needs. We support you from CAD concept to validated hardware, whether for FLASH, MRI-based therapy, compact systems, or proton beamlines.
RPS Base
The RPS Base offers full 6DoF surface-guided control for advanced radiotherapy workflows. It enables ±5° angular correction across all axes, ensuring exact isocenter alignment for every session. With its smart, Linac-ready design, it streamlines setup, improves reproducibility, and supports adaptive treatment strategies.
RPS Proton / BNCT Fixed Beam
The RPS Fixed Beam delivers robotic flexibility for fixed-beam proton, other particle or BNCT therapy centers. It ensures precise, reproducible positioning for both supine and seated treatments while maintaining constant isocenter geometry. Designed for cost-effective integration, it reduces infrastructure requirements and supports advanced radiotherapy workflows without a rotating gantry.