--- title: "Akesis Gemini 360 vs. Traditional Linac: How They Compare | 5D Cancer Services" description: "How the Akesis Gemini 360 adaptive radiotherapy platform compares to a traditional linear accelerator: imaging modality, daily plan adaptation, treatment time, indications, and patient experience." canonical: https://www.5dcancerservices.com/compare/gemini360-vs-traditional-linac route: /compare/gemini360-vs-traditional-linac type: article lastUpdated: 2026-07-29 keywords: ["adaptive radiotherapy", "Akesis Gemini 360", "5D Cancer Services", "St. George Utah", "radiation oncology", "Gemini 360 vs traditional linac", "linac comparison", "adaptive vs static plans", "image-guided radiotherapy"] --- # Akesis Gemini 360 vs. Traditional Linac: How They Compare | 5D Cancer Services > How the Akesis Gemini 360 adaptive radiotherapy platform compares to a traditional linear accelerator: imaging modality, daily plan adaptation, treatment time, indications, and patient experience. - HomeOur ApproachTreatment TypesFor PatientsOur Team (435) 900-7060Please do not send Protected Health Information (PHI) by email or voicemail. Standard email is not secure — call us and we will arrange a secure channel.Home - Treatments - Gemini 360 vs. Traditional LinacComparison # Akesis Gemini 360 vs. Traditional Linac A traditional linear accelerator (linac) delivers radiation according to a single plan created at the start of treatment. The Akesis Gemini 360 re-images and re-plans at every session, allowing many cancers to be treated in as few as 5 sessions instead of 20–45. Quick summaryA traditional linac uses one static plan for the entire course of radiation. The Akesis Gemini 360 is an adaptive platform that re-images and recalculates the plan at every session, which typically shortens the course of treatment, improves precision as anatomy changes, and reduces dose to surrounding healthy tissue. - Imaging: traditional linac uses pre-treatment CT + occasional CBCT; Gemini 360 captures full daily 3D imaging - Plan adaptation: traditional linac uses one plan for the whole course; Gemini 360 re-plans every session - Course length: traditional linac often 20–45 sessions; Gemini 360 as few as 5 sessions for many cancers - Margins: traditional linac requires larger safety margins; Gemini 360 can use tighter margins because it images daily - Side effects: smaller margins and daily adaptation typically reduce dose to healthy tissueLast reviewed: 2026-05-12 Watch: Gemini 360 vs. a traditional linac ## What a traditional linac does A traditional linear accelerator delivers external-beam radiation according to a treatment plan created from a single planning CT taken at the beginning of treatment. The same plan is then used for every session — typically 20 to 45 daily visits over several weeks. Traditional linacs may use cone-beam CT (CBCT) for positioning checks, but the underlying plan does not change as your anatomy changes day to day. ## What the Gemini 360 does differently - Captures a full 3D image of the tumor at every session, not just at the start of treatment - Recalculates the radiation plan in real time so the dose matches your anatomy today - Uses tighter safety margins because the system knows where the tumor is each day - Delivers the full course in as few as 5 sessions for many cancers - Supports SBRT, SRS, hypofractionation, and low-dose benign RT on a single platform ## Side-by-side comparison - Plan adaptation — Traditional linac: one plan for the entire course. Gemini 360: re-planned every session. - Imaging — Traditional linac: planning CT + occasional CBCT. Gemini 360: full 3D imaging at every session. - Margins — Traditional linac: larger safety margins to account for daily anatomy variation. Gemini 360: tighter margins because the system images daily. - Course length — Traditional linac: 20–45 sessions. Gemini 360: as few as 5 sessions for many cancers. - Healthy-tissue dose — Traditional linac: more spillover to surrounding tissue. Gemini 360: typically less, due to tighter margins and daily adaptation. ## What this means for patients For patients, the practical difference is fewer trips to the clinic, less total time off work and away from family, and typically fewer side effects than a long course on a traditional linac. For some diagnoses, a traditional linac may still be the right choice, and we will tell you when that is the case. Talk through the trade-offs for your specific diagnosis: call (435) 900-7060 or visit /faq for our most common patient questions. ## Learn More [### Akesis Gemini 360 About the technology we use. Learn more](/technology) [### Adaptive vs. Conventional Radiation Side-by-side comparison of adaptive and conventional radiation therapy. Learn more](/compare/adaptive-vs-conventional-radiotherapy) [### Clinical Data Evidence behind adaptive radiotherapy. Learn more](/clinical-data) Take the next step ## There is no time for cancer. You deserve the most advanced care available. Schedule a consultation with our physicians and staff today to discuss your treatment options. 1308 E 900 South, Unit B, St. George, UT 84790 [Call (435) 900-7060](tel:+14359007060)[Request Consultation](tel:+14359007060) Please do not send Protected Health Information (PHI) by email or voicemail. Standard email is not secure — call us and we will arrange a secure channel. Bringing the most advanced Adaptive Radiotherapy to Southern Utah. No time for cancer. 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Standard email is not secure — call us and we will arrange a secure channel. The information on this site is for general educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. © 2026 5D Cancer Services. All rights reserved. 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