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.
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
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
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.
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
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.
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
Learn more about our projects
Discover how gKteso’s positioning solutions are applied in advanced radiotherapy systems worldwide. From prototype integration to clinical implementation, our projects demonstrate precision engineering in real treatment environments. Learn how we collaborate with OEM partners to shape the next generation of radiotherapy technology.
Learn more about …
Patient Positioning Systems by gKteso: Tailored for modern radiotherapy environments.
Learn more about …
RPS Fixed Beam
Seamless surface scanner integration and live motion correction during treatment.
Schedule an appointment now!
Frequently Asked Questions
How does the RPS Head enable submillimeter angular corrections even after the thermoplastic mask is fixed?
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.
Which mask and indexing systems is RPS Head compatible with?
What are the clinical benefits of RPS Head in SGRT and SRT for head-and-neck radiotherapy?
- Ensures reproducible patient alignment across all fractions
- Enables exact beam-axis correction for optimized dose delivery
- Reduces repositioning time and improves workflow efficiency
- Minimizes radiation side effects through superior target accuracy
Overall, RPS Head enhances treatment precision, safety, and consistency in head-and-neck protocols.
What adjustment range does RPS Head offer for pitch, roll, and yaw - and how does it improve isocenter accuracy?
RPS Head allows fine angular corrections in all three rotational axes within a clinically relevant degree range of +/- 4° with sub-degree accuracy. These micro-adjustments minimize isocenter deviation, sharpen dose conformity, and improve beam-to-target alignment. (Exact mechanical limits depend on model configuration – available in the technical datasheet.)
Is RPS Head retrofit-ready and compliant with MDR/ISO 13485 standards?
Yes. RPS Head is a retrofit-friendly, plug-and-play solution that fits seamlessly into existing immobilization and indexing infrastructures. All gKteso systems are developed under ISO 13485-certified and MDR-compliant processes. Integration documentation, validation guides, and on-site training support are available – ensuring fast setup, smooth operation, and full regulatory conformity.
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