RPS Base
6DoF Robotic Couch for Image Guided Radiotherapy
The RPS Base delivers robotic 6DoF positioning for advanced radiotherapy workflows. It achieves submillimeter correction in pitch, roll, and yaw for precise targeting in stereotactic and image-guided treatments. While being LINAC system agnostic, it can be customized for the OEM to enable faster setup, higher accuracy and full integration into next-generation radiotherapy platforms.
250 kg
Patient weight
6 DoF
Isocentric movement
+/-5°
Angle correction
64 cm
Low patient entrance
Why Precision Fails in patient positioning
Accurate targeting defines success in radiation therapy. Yet even submillimeter deviations in positioning can alter the radiation path and compromise treatment outcomes. The following challenges show why fixation alone cannot guarantee precision.
Angular Deviations
Even minimal rotational shifts in pitch, roll, or yaw can displace the treatment isocenter by several millimeters. This reduces dose conformity and compromises tumor targeting accuracy particularly in hypofractionated and stereotactic radiotherapy.
Intrafraction Motion
Patient relaxation, anatomic changes or mask inherent tolerances can introduce subtle movements that remain undetected. These micro-motions alter the beam path and affect dose delivery to critical structures near the tumor.
Limited Post-Fixation Adjustment
Once the thermoplastic mask is fixed, most immobilization systems cannot correct angular errors. This limits precision in adaptive or image-guided workflows, especially when CBCT imaging reveals small misalignments.
Reproducibility Between Fractions
Even with identical mask setups, geometric variation occurs across treatment sessions. Without integrated motion correction, these inconsistencies reduce reproducibility and complicate dose planning for fractionated or stereotactic protocols.
Advantages and Benefits
The RPS Base overcomes these issues with integrated robotic correction of up to +/- 5 ° across all axes, performed directly under the LINAC. This enables real-time isocenter alignment, reduces repositioning, and preserves accuracy throughout every treatment session.
- Smart control interface for intuitive workflow integration
- Rotational correction up to +/- 5 ° across all axes for precise alignment
- LINAC vendor agnostic and compatible with any imaging systems
- Low entry height and stable mechanics for patient comfort and safety
- API-ready architecture for OEM integration and digital control systems
How You Benefit
Expanded correction range
Enables +/- 5 ° rotational correction on all axes - even while the patient is immobilized - to support advanced stereotactic and image-guided radiotherapy protocols for submillimeter accuracy.
OEM manufacturing expertise
gKteso is a trusted development partner for LINAC system manufacturers, delivering modular, production-ready 6DoF patient tables tailored for high-end cancer therapy solutions.
Reliable patient positioning
Designed for seamless integration into modern LINAC workflows, the RPS Base enhances targeting precision and supports reproducibility across high-complexity indications for uncompromised treatment delivery.
Get in Touch
Upgrade Your Treatment Platform with 6DoF Precision
Contact us to learn how to integrate the RPS Base for submillimeter correction and real-time isocenter alignment in any radiotherapy treatment system.
- Corrects rotational deviations up to +/- 5 ° per axis
- Compatible with image-guided radiotherapy systems
- Ideal for stereotactic protocols and motion-sensitive treatments
Seamless Integration
into LINAC-Based Radiotherapy Workflows
The RPS Base integrates effortlessly into modern radiotherapy environments and connects directly with major LINAC systems. Compatible with standard carbon baseplates and immobilization devices from Orfit, CQ Medical, 3C, IT-V, and Macromedics, it supports existing clinical setups without modification. Its rigid, low-profile construction ensures stable performance and easy daily operation.
Fully MDR-compliant and ISO 13485 certified, the RPS Base fits seamlessly into image-guided and stereotactic radiotherapy workflows, including CBCT, 4D, and adaptive protocols. It supports submillimeter reproducibility and real-time correction in cranial and head-and-neck applications, making it the ideal platform for clinics and OEMs aiming to upgrade precision without redesigning their system architecture.
Our Applications
for Advanced Radiotherapy
High-precision imaging is essential in stereotactic and image-guided brain radiotherapy to ensure accurate dose delivery and protect surrounding tissue. Large Linac vendor Systems benefit from the RPS Base’s integrated 6DoF motion control, enabling submillimeter positioning and real-time isocenter correction directly at the treatment table.
- Robotic correction up to +/- 5 ° in pitch, roll, and yaw
- Seamless integration with CBCT and LINAC-based imaging systems
- Consistent isocenter geometry across all treatment fractions
Stereotactic radiotherapy
Radiotherapy mask
Surface guided Radiotherapy
Brain radiotherapy
Penumbra in Radiotherapy
Fractionated radiotherapy
6DoF correction – made for all radiotherapy cases
With +/- 5 ° angular correction per axis, RPS Base is the precision foundation for IGRT. Compatible with all major immobilization systems and optimized for adaptive workflows.
- High-precision 6DoF table
- Allows for online-adaptive SGRT, SBRT, SRS for
- Ideal for correcting setup & motion errors
- Designed for use with thermoplastic mask systems
- Improves outcome in brain and hypo-fractionated radiotherapy
- Reduces penumbra and increases reproducibility
Learn more about our patient positioning solutions for OEM partners
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 …
Seamless surface scanner integration and live motion correction during treatment.
Schedule an appointment now!
Frequently Asked Questions
How does the RPS Base support image-guided radiotherapy (IGRT)?
How does the RPS Base improve treatment precision in SRS and SBRT radiotherapy?
Is the RPS Base compatible with existing LINAC and immobilization systems?
The system is designed for quick integration into existing OEM platforms, including interfaces to standard carbon baseplates and thermoplastic mask systems and other patient positioning devices. This makes integration into existing IGRT workflows seamless, without the need for major hardware changes.
What advantages does the RPS Base offer to OEM partners and system developers?
As an OEM-ready 6DoF motion platform, the RPS Base reduces development time and costs for new LINAC systems. It offers API access for digital workflow integration, validated MDR-compliant design, and modular scalability for future radiotherapy technologies – empowering OEMs to accelerate innovation in image-guided treatment systems.
How does the RPS Base contribute to adaptive and next-generation radiotherapy workflows?
Explore more precision-driven patient systems for radiotherapy
RPS mini
The RPS Mini delivers submillimeter accuracy for treating brain metastases in stereotactic radiotherapy. Its 6DoF correction ensures exact patient positioning, verified by integrated CBCT imaging. Designed for SRS workflows, it combines precision, stability, and efficiency in every treatment session.
RPS SGRT
The RPS SGRT provides image-guided precision without compromise for frameless radiotherapy treatments. It continuously monitors patient motion in real time to maintain exact positioning during irradiation. With intrafraction tracking and non-invasive setup, it ensures consistent accuracy and patient comfort throughout the procedure.
RPS HEAD
The RPS Head delivers high-precision positioning for cranial and head-and-neck radiotherapy. With integrated 6DoF motion control, it enables submillimeter correction in pitch, roll, and yaw even after the thermoplastic mask is fixed. Designed for stereotactic and image-guided workflows, it ensures stable geometry, minimizes repositioning, and supports accurate SGRT and CBCT verification throughout every treatment session.