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RPS Head
For Surface Guided 6DoF Adjustment

The RPS Head enables precise angular correction for head and neck radiotherapy and cranial SRS. It allows submillimeter adjustments in pitch, roll, and yaw to ensure exact beam alignment and reproducible positioning. This add-on module enhances treatment precision and supports accurate surface-guided radiotherapy without interrupting workflow.

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4 kg

Lightweight add-on

5+ Types

Fits various masks

+/-4°

Angle correction

200 kg

Patient weight

The Limits of Conventional Mask Fixation

Precise alignment is critical in cranial and head-and-neck radiotherapy. Yet even small deviations in patient positioning can significantly impact beam accuracy and treatment quality. The following challenges illustrate why immobilization alone is not enough:

Angular Deviations

Even slight misalignments in pitch, roll, or yaw can shift the radiation field and reduce dose accuracy.

Limited Adjustability

Conventional immobilization systems hold the patient securely but cannot correct angles once the thermoplastic mask is fixed.

Movement inside the mask

Conventional immobilization systems hold the patient securely but cannot correct angles once the thermoplastic mask is fixed.

Inconsistent Geometry

Without correction capabilities, geometry varies between fractions, affecting reproducibility in stereotactic and fractionated radiotherapy.

Advantages and Benefits

The RPS Head eliminates these limitations by allowing manual angle correction up to ±4° without removing the mask or interrupting workflow. This ensures consistent targeting, minimizes additional imaging, and maintains geometry across all fractions.

  • Sub-degree correction for precise beam alignment
  • Compatibility with all thermoplastic mask systems and indexing boards
  • Dose conformity through reproducible geometry
  • SGRT support for accurate surface-guided workflows
  • Retrofit-ready design for fast integration without new hardware
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How You Benefit

Cost-efficient angular correction

RPS Head enables precise beam alignment through manual angle correction for Head and neck radiotherapy and cranial SRS, without requiring additional hardware - ideal for head and neck and stereotactic applications.

Enhance advanced systems

Augment modern ring-mounted or helical radiotherapy platforms like Halcyon® or TomoTherapy® with 6DoF alignment for reproducible treatment outcomes.

Streamline clinical workflows

RPS Head works with all standard thermoplastic mask systems and indexing boards, eliminating the need for custom integration or rework through compatibility.








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    Get in Touch
    Upgrade Your Immobilization Workflow with Angular Precision

    Contact us to learn how to integrate the RPS Head for precise angular correction in cranial and head-and-neck radiotherapy.

    • MDR-compliant and ISO 13485 certified
    • Retrofit-friendly for existing immobilization boards
    • 30+ years of experience in radiotherapy positioning solutions

    +49 8234 966 38 41

    info@gkteso.com

    Seamless Integration
    into Clinical Radiotherapy Workflows

    The RPS Head integrates seamlessly into all standard radiotherapy setups and thermoplastic radiotherapy mask systems. It is compatible with immobilization devices from Orfit, Qfix, CQ Medical, 3C, IT-V, and Macromedics and many more and mounts easily on standard indexing boards. The lightweight, durable design simplifies daily handling while maintaining mechanical rigidity.


    Fully MDR-compliant, FDA cleared and ISO 13485 certified, the RPS Head can be implemented without software or hardware modification. It is suitable for use with Halcyon®, TomoTherapy®, and photon-based systems, making it the ideal retrofit solution for clinics seeking to upgrade precision without redesigning their entire setup. The RPS Head ensures submillimeter reproducibility in SGRT and stereotactic applications.

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    Our Applications
    for Advanced Radiotherapy

    Accurate imaging is crucial in stereotactic brain radiosurgery or Head & neck radiotherapy to protect healthy tissue and reduce side effects. Systems such as Varian Halcyon® deliver high precision and comfort, while the RPS Head adds direct angular correction at the treatment table for exact alignment and shorter setup times.

    • Manual angle correction at the table
    • Compatible with standard radiotherapy masks
    • Consistent geometry for every fraction

    Stereotactic radiotherapy

    Surface guided Radiotherapy

    Tomo therapy

    Radiotherapy mask

    Fractionated radiotherapy

    Brain radiotherapy

    Secure Fixation - Smarter Treatments Outcomes

    The RPS Head offers angular correction for all thermoplastic mask types. It improves stability, targeting accuracy, and reproducibility in head & neck radiotherapy.

    • Compatible with all thermoplastic mask systems
    • Enables SGRT and SRT in head & neck zones
    • Designed for Tomotherapy and other photon therapy modalities
    • Supports stereotactic and fractionated radiotherapy
    • Lightweight, easy-to-use and indexable
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    Learn more about our positioning solutions in practice

    Discover how gKteso’s RPS Head supports precise patient positioning in cranial radiotherapy. From clinical workflow integration to daily treatment setups, our solution enables efficient, reproducible positioning for advanced radiotherapy environments.

    Read in our blog

    Learn more about …

    Precise and repeatable patient positioning in cranial radiotherapy.

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    Intuitive positioning with tool-free adjustments for daily clinical workflows.

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    Reduced repositioning and faster setup through integrated angular correction in cranial radiotherapy.

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    Schedule an appointment now!

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    Frequently Asked Questions

    For which specific clinical applications and anatomical treatment areas is the RPS Head add-on module most suitable?
    RPS Head features a precision-engineered 6-degree-of-freedom mechanism allowing fine-tuned pitch, roll, and yaw adjustments after mask fixation. This makes submillimeter and sub-degree corrections possible without interrupting the clinical workflow – ideal for surface-guided (SGRT) and stereotactic (SRT) treatments in highly sensitive cranial zones.
    Yes, the RPS Head features a highly versatile, retrofit-ready design that natively fits over five distinct mask types and standard indexing boards. It provides seamless physical compatibility with major third-party immobilization devices from leading brands like Orfit, Qfix, CQ Medical, 3C, IT-V, and Macromedics. This open compatibility allows clinics and OEMs to instantly upgrade their positioning accuracy to 6DoF capabilities without replacing their current accessory inventory or custom setups. Weighing only 4 kg, this lightweight yet mechanically rigid add-on simplifies daily clinical handling while easily supporting a patient weight capacity of up to 200 kg.
    The RPS Head serves as a cost-efficient mechanical upgrade to support real-time surface-guided radiotherapy (SGRT) and frameless stereotactic workflows without workflow interruptions. It allows clinicians to execute immediate angular corrections of up to +/- 4° right at the table when optical surface tracking scanners detect minor intrafraction motion. This capability is highly valuable for augmenting advanced ring-mounted, helical, or photon-based platforms such as Varian Halcyon and TomoTherapy. By reducing time-consuming manual repositioning and eliminating the need for repeated verification imaging, it drastically shortens setup times and streamlines daily patient throughput.
    The RPS Head features a precision-engineered 6-degree-of-freedom mechanism providing a manual angle correction range of +/- 4° across the pitch, roll, and yaw axes. This robust, lightweight 4 kg module securely accommodates a maximum patient weight of up to 200 kg without losing its mechanical rigidity. Its sub-degree and submillimeter adjustments allow for micro-positioning corrections directly at the treatment beamline to counter any subtle patient movement inside the mask. This highly reproducible alignment ensures that geometry remains entirely consistent between fractions, maximizing clinical accuracy for stereotactic treatments.

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