CyberKnife S7 System
The world's only fully robotic radiosurgery system.
Precision radiosurgery without a scalpel — for tumours anywhere in the body.
The CyberKnife S7 delivers sub-millimetre stereotactic radiosurgery (SRS) and stereotactic body radiotherapy (SBRT) without surgical incisions, rigid head frames or general anaesthesia. Its robotic arm repositions the linear accelerator continuously while real-time X-ray imaging tracks tumour position and automatically corrects the beam — even as the patient breathes normally. Jos•Hansen installed the first CyberKnife in East Africa at Kenyatta University Teaching, Research and Referral Hospital (KUTRRH), Nairobi in October 2022.
Precision
Sub-millimetre targeting accuracy maintained throughout the entire treatment session — the robotic arm continuously corrects beam position as the patient breathes normally.
Speed
Most CyberKnife treatments are completed in 15–90 minutes. Many patients finish their full course of radiosurgery in a single outpatient session and return home the same day.
Patient comfort
No surgical incisions, no rigid head frame bolted to the skull, no general anaesthesia. The system treats the tumour — not the patient's tolerance for invasive procedures.
A robotic arm that tracks the tumour in real time.
The CyberKnife S7's Synchrony™ real-time motion tracking system acquires continuous X-ray images during treatment, identifies tumour position frame by frame, and automatically adjusts the robotic arm to maintain beam delivery within 0.95mm — even as the patient breathes normally. No breath-holding protocols, no rigid head frame, no general anaesthesia. Treatment is completed in a single outpatient session in most cases.
East Africa's first — and still its only — robotic radiosurgery system.
In October 2022, Jos•Hansen completed the installation of the first CyberKnife in East Africa at KUTRRH, Nairobi. The project covered the full scope: site survey, radiation shielding design, civil works coordination, system installation, beam commissioning, treatment planning system integration and regulatory submission to Kenya's nuclear medicine authority. The system now treats patients with complex cranial, spinal and body tumours that previously required referral abroad.
Full physics commissioning and QA — not just delivery.
Jos•Hansen's certified medical physicists conduct the complete CyberKnife commissioning protocol: end-to-end accuracy testing to ISO 9283, multi-leaf collimator calibration, beam data acquisition, treatment planning system integration and the full acceptance test suite required for clinical operation. Ongoing QA includes machine log analysis, patient-specific pre-treatment checks and Accuray-specified preventive maintenance — the complete programme required for radiation therapy department accreditation.
Technical specifications.
Targeting accuracy
< 0.95 mm end-to-end (ISO 9283)
Beam directions
1,200+ unique non-coplanar paths
Treatment time
15–90 minutes per session
Tumour tracking
Synchrony™ real-time continuous X-ray
Applications
Cranial SRS · Spinal · Prostate · Lung · Liver · SBRT
Regulatory clearance
FDA 510(k) cleared · CE Marked
End-to-end targeting accuracy to ISO 9283 — the published Accuray clinical performance specification
Unique non-coplanar beam entry directions for conformal dose sculpting around complex tumour geometry
CyberKnife installed in East Africa — KUTRRH, Nairobi, commissioned by Jos•Hansen in October 2022
Why CyberKnife.
Sub-millimetre accuracy
Continuous real-time tumour tracking and automatic robotic beam correction maintain delivery within 0.95mm throughout the full treatment session.
Non-invasive, outpatient
No surgical incisions, no rigid head frame, no general anaesthesia. Most patients complete treatment and go home the same day.
Proven in East Africa
Jos•Hansen delivered and commissioned the first CyberKnife in East Africa at KUTRRH, Kenya in 2022 — a verified milestone in African oncology.
End-to-end lifecycle support
Site commissioning, clinical physics setup, staff training, QA programmes and ongoing preventive maintenance — managed by our engineers.
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