The Akesis Gemini 360
The only adaptive radiotherapy machine in Utah. It doesn't just deliver radiation. It sees, adapts, and responds to your cancer in real time.
At 5D Cancer Services in St. George, Utah, we use this technology to deliver treatments that are more precise, more efficient, and produce fewer side effects than conventional radiation — often in as few as 5 sessions.
Because cancer doesn't sit still
Tumors change shape, shift position, and shrink during treatment. A plan created on day one may not match reality on day five. Conventional radiation machines treat based on a static plan — delivering radiation to where the tumor was, not where it is. The Gemini 360 solves this by re-imaging and recalculating your treatment plan at every single session.
of radiation machines cannot adapt
They deliver based on a static plan made before treatment begins, regardless of how the tumor changes.
isocenter targeting accuracy
About the width of three human hairs — precision that maximizes tumor dose while sparing healthy tissue.
sessions for many cancers
Compared to 20–45 treatments over 5–9 weeks with conventional radiation therapy.
How a treatment session works
Each session follows the same adaptive process — from imaging to delivery, everything is optimized for your cancer that day.
Consultation & Planning
Our physicians and staff review your diagnosis, imaging, and pathology to determine if adaptive radiotherapy is right for you. A personalized treatment plan is created based on your specific cancer type and location.
Real-Time 3D Imaging
Before each session, the Gemini 360 captures a full 3D image of your tumor using cone-beam CT (CBCT) and kV/kV imaging. This shows exactly where the tumor is today — not where it was last week.
Plan Adaptation
The system automatically compares today's image to the original plan and recalculates the treatment in real time. If your tumor has shifted, shrunk, or changed shape, the plan adapts accordingly.
Precision Delivery
Radiation is delivered with 0.3mm isocenter accuracy — about the width of three human hairs. The system targets your tumor precisely while sparing surrounding healthy tissue.
Treatment Complete
Many cancers are treated in as few as 5 sessions over one week, compared to 20–45 treatments over 5–9 weeks with conventional radiation. Most patients continue normal activities throughout treatment.
Built for precision
The Gemini 360 pairs a high-energy LINAC with onboard CBCT imaging in a single ring gantry — enabling adaptive treatments like dose painting, grid irradiation, and simultaneous multi-target therapy.
Sub-millimeter targeting precision
Faster delivery, shorter sessions
Treats small brain tumors to large complex cancers
Real-time 3D imaging before every session
Skull tracking with less than 1mm accuracy
Online vs offline adaptive
Adaptive radiotherapy comes in two flavors. The Gemini360RT delivers online adaptive treatment — your plan is recalculated against today's anatomy, on the couch, before the beam fires.
Offline adaptive
Replan between sessions
After one or more fractions, the team reviews recent imaging, redesigns the plan offline, and treats the patient on the new plan at a later visit. It improves on a static plan, but it cannot react to today's anatomy.
Online adaptive — what we deliver
Replan at the moment of treatment
The Gemini360RT acquires a CBCT in treatment position, the system recalculates the plan against today's anatomy, the physician approves the adapted plan, and treatment is delivered — all in one visit, before you get up.
AI-assisted contouring & replanning
What makes online adaptation practical is automation. Deep-learning models propose tumor and organ contours on the daily CBCT in seconds, the system recalculates dose against today's anatomy in minutes, and independent QA runs in the background. The physician reviews and approves — but the team no longer needs to start a fresh plan from scratch every fraction. That is how the Gemini360RT compresses what used to take hours into a single, on-couch session.
Read the full evidence-based explainerTraditional vs. Adaptive Radiotherapy
Here's how the Akesis Gemini 360 compares to conventional radiation treatment.
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treatments
Traditional max
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sessions
Adaptive minimum
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faster
Time to complete
Safe, proven, and FDA cleared.
We understand that trusting a new treatment approach is a big decision. The Akesis Gemini 360 has received both FDA 510(k) clearance and Premarket Approval, along with FDA Breakthrough Device Designation. It has been thoroughly reviewed and authorized by the U.S. Food and Drug Administration for safety and effectiveness. This isn't experimental. It's the next generation of radiation treatment, and it's here now.
What does FDA clearance mean?
FDA 510(k) clearance means the device has been reviewed by the FDA and determined to be substantially equivalent to other legally marketed devices. It must meet safety standards, performance benchmarks, and quality controls before it can be used to treat patients.
Explore the clinical dataFDA 510(k) Clearance & Premarket Approval
The Akesis Gemini 360 has received both U.S. FDA 510(k) clearance and Premarket Approval, meeting the most rigorous safety and effectiveness standards required for medical devices in the United States.
FDA Breakthrough Device Designation
The Gemini 360 earned FDA Breakthrough Device Designation — a status reserved for technologies that offer significant advantages over existing treatments for life-threatening conditions.
First U.S. patient treated December 2025
The first U.S. patient was treated with the Gemini 360 on December 16, 2025, at Advanced Radiation Centers of New York in Lake Success, NY — marking a new era in integrated radiotherapy.
Board-certified team
Every treatment is planned and supervised by our physicians and staff — board-certified radiation oncology professionals with over 30 years of combined clinical experience.
Conditions treated with adaptive radiotherapy
The Gemini 360's large 40x40 cm field and adaptive workflow make it effective for a wide range of cancers and benign conditions.
