Radiation Oncology Systems

What Radiation Oncology Systems does

Radiation Oncology Systems (ROS), legally Radiology Oncology Systems, Inc., is a privately held U.S. corporation founded in 1997 and headquartered in San Diego, California, that specializes in refurbished radiation therapy and diagnostic imaging equipment for healthcare facilities worldwide. The company sells and distributes linear accelerators, CT scanners, MRI systems, PET/CT scanners, CT simulators, superficial radiation therapy systems, and accessories — sourcing from major OEMs including Varian, Elekta, GE HealthCare, Siemens Healthineers, Philips, and Canon/Toshiba. ROS holds a vendor-neutral position, refurbishing equipment to OEM specifications and adding the FDA-cleared Nanox.ARC digital tomosynthesis system to its portfolio through an April 2026 U.S. distribution agreement with Nanox Impact Inc.

The business operates four interconnected revenue streams: equipment sales (refurbished and select new hardware), parts and components (consolidated through its Haslett, Michigan-based Radparts subsidiary), professional services (installation, relocation, maintenance, repair, removal, training, software support, virtual inspections, appraisals, and financing), and a buyback-and-resale program that routes decommissioned equipment to developing and rural markets. Distribution is global — covering 700+ facilities across 67+ countries — and direct, combining a website-driven inquiry model with field sales and project management teams. ROS also operates as a channel partner for OEMs and serves independent service organizations, veterinary specialty practices, academic institutions, and industrial non-destructive testing customers in addition to its core outpatient, community, and large hospital segments.

ISO 9001 and ISO 13485 certified, ROS positions itself as a cost-effective alternative to new OEM equipment, addressing capital budget constraints for cancer centers and hospitals — particularly in rural, community, and emerging-market settings — while providing full lifecycle support from procurement through decommissioning.

Name

Radiation Oncology Systems

Legal name

Radiology Oncology Systems, Inc.

Website

https://oncologysystems.com

Company type

Private

Founded year

1997

Operating status

Operating

Headcount range

11–50 employees

Short description

Radiation Oncology Systems (ROS) is a privately held, San Diego–based distributor founded in 1997 that sells refurbished radiation therapy and diagnostic imaging equipment, parts, and lifecycle services to hospitals, cancer centers, and clinics across 67+ countries.

Ownership category

akta.pro rank

Product category

Refurbished Radiation Therapy and Diagnostic Imaging Equipment

NAICS

Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345)

SIC

Wholesale-Medical, Dental & Hospital Equipment & Supplies (5047)

akta.pro primary industry

Radiation Oncology (HLAKAFAC)

akta.pro secondary industry

Radiation Therapy Planning & Simulation Imaging (CT Sim/MR Sim) (HLAHABAH)

Keywords

• Refurbished medical equipment
• Radiation therapy equipment
• Diagnostic imaging systems
• Linear accelerators
• Medical equipment services

Headquarters

HQ city

San Diego

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Supply Chain, Personnel, Marketing or Sales, Infrastructure

Revenue model

1. Medical Equipment Sales: Sale of refurbished and pre-owned radiation therapy and diagnostic imaging equipment including linear accelerators, CT scanners, MRI systems, PET/CT scanners, CT simulators, and accessories. The company also offers new equipment alongside refurbished options.
2. Parts and Components: Sale of replacement parts for linear accelerators and CT scanners, including hundreds of different parts from gaskets to filters and hard drives, helping extend equipment life and reduce downtime.
3. Equipment Services: Comprehensive service offerings including installation, relocation, service and maintenance, repair, removal and disposal, training, software support, virtual inspections, and financing services.
4. Equipment Buyback and Resale: Purchase of used medical equipment from facilities and resale to developing markets, rural markets, and facilities with low populations and/or low reimbursement rates.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Radiation Oncology Systems (ROS) sells refurbished and reconditioned radiation therapy and diagnostic imaging equipment—including linear accelerators, CT scanners, MRI systems, PET/CT scanners, and CT simulators—to hospitals, cancer centers, and clinics worldwide. The company operates as a vendor-neutral distributor for major OEMs (Varian, Elekta, GE, Siemens, Philips, Toshiba/Canon), distributes the FDA-cleared Nanox.ARC digital tomosynthesis system in the U.S., and complements equipment sales with comprehensive installation, relocation, maintenance, repair, financing, training, and disposal services, plus replacement parts.

Product overview

Radiology Oncology Systems (ROS) provides a comprehensive portfolio of refurbished radiation therapy and diagnostic imaging equipment, centered around a core offering of linear accelerators (Linacs), CT scanners, MRI systems, PET/CT scanners, and CT simulators. The company operates as both a seller and distributor of equipment from major manufacturers (Varian, Elekta, GE, Siemens, Philips, Toshiba) and also distributes the Nanox.ARC digital tomosynthesis system. ROS complements its equipment sales with a full suite of services including installation, relocation, maintenance, repair, financing, consulting, appraisals, refurbishment, training, and virtual inspections. The company also offers accessories (SGRT, contrast injectors, patient positioning lasers) and replacement parts for linear accelerators.

Differentiator

Problem solved

Functional benefit

Products and services

• Refurbished Linear Accelerators (Linacs) Refurbished linear accelerators for radiation therapy treatment delivery, sourced from Varian, Elekta, Siemens, and other OEMs. Sold to hospitals and cancer centers with full installation and service support for cancer patient treatment.
• Refurbished CT Scanners Refurbished computed tomography scanners for diagnostic imaging and radiation therapy simulation. Available from multiple OEMs (GE, Siemens, Philips, Toshiba) with full installation support.
• Refurbished MRI Systems Refurbished magnetic resonance imaging systems for diagnostic imaging, available from GE, Philips, Siemens, and Toshiba manufacturers.
• Refurbished PET/CT Scanners Refurbished positron emission tomography combined with CT scanners for diagnostic imaging. Available from GE, Philips, and Siemens with installation and service support.
• Refurbished CT Simulators Specialized CT systems configured specifically for radiation therapy simulation and treatment planning workflows.
• Superficial Radiation Therapy (SRT) Systems Radiation therapy systems designed for superficial treatments of skin and surface-level conditions.
• Nanox.ARC Digital Tomosynthesis System FDA-cleared multisource digital tomosynthesis system providing 3D imaging at lower cost and reduced radiation dose compared to traditional CT scans. Distributed by ROS across the United States for diagnostic imaging centers, rural hospitals, and regional hospitals.
• Surface-Guided Radiation Therapy (SGRT) Systems Patient positioning and monitoring accessory systems used in radiation therapy for surface-based treatment guidance.
• Contrast Injectors Contrast injection systems used with CT scanners and MRI systems for enhanced diagnostic imaging.
• Patient Positioning Lasers Laser-based positioning systems used for precise patient alignment in radiation therapy treatment.
• Linear Accelerator Parts Replacement parts for linear accelerators and CT scanners, ranging from gaskets and filters to hard drives, sold to extend equipment life and reduce downtime. Includes dedicated Varian TrueBeam parts inventory.
• Linear Accelerator Service, Maintenance, and Repair Field service offering for linear accelerators covering preventive maintenance, repair, and ongoing support delivered through ROS's network of best-in-class engineers globally.
• Linear Accelerator Rental Program Rental program allowing healthcare facilities to lease linear accelerators on a temporary, transitional, or bridge basis without full ownership commitment.
• Equipment Relocation and Shipping Specialized logistics services for the relocation and shipping of radiation therapy and diagnostic imaging equipment between healthcare facilities.
• Equipment Removal and Disposal Decommissioning services for end-of-life medical equipment, including safe removal and environmentally compliant disposal.
• Equipment Financing Financing services that enable healthcare facilities to acquire radiation therapy and imaging equipment through structured payment arrangements.
• Medical Equipment Consulting and Appraisals Expert consulting and valuation/appraisal services for healthcare facilities evaluating radiation therapy and imaging equipment purchases, sales, or financing decisions.
• Linear Accelerator Applications Training Applications training programs that prepare clinical staff to operate and optimize linear accelerator systems following equipment purchase.
• Software Support Services Software support services covering the treatment planning and operational software bundled with radiation therapy and diagnostic imaging systems.
• Virtual Equipment Inspections Remote virtual inspection service that allows prospective buyers to evaluate equipment condition prior to purchase without requiring on-site travel.
• Equipment Buyback and Consignment Buyback and consignment program allowing healthcare facilities to sell or consign used medical equipment, which ROS then resells to developing and rural markets.

Quantifiable outcome

• Successfully completed 1600+ radiation therapy and diagnostic imaging equipment projects worldwide
• +2 more outcomes

Named customers19 records

Segments8 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Seven partnerships are on record, tiered core.

• Nanox Imaging Ltd. (Nanox Impact Inc.)coreChannel Partner/ Reseller/ Distributor · 23 April 2026Nanox Imaging Ltd.'s U.S. subsidiary Nanox Impact Inc. signed a distribution agreement with Radiology Oncology Systems to deploy its FDA-cleared Nanox.ARC digital tomosynthesis imaging systems across U.S. hospitals and clinics. ROS leverages its established distribution network and oncology expertise to broaden clinical access to advanced 3D imaging at lower cost and reduced radiation dose compared to traditional CT.
• Varian Medical SystemscoreChannel Partner/ Reseller/ DistributorMulti-OEM distribution model featuring Varian linear accelerators including TrueBeam systems. ROS provides refurbished Varian equipment with installation, service, and parts support.
• GE HealthCarecoreChannel Partner/ Reseller/ DistributorDistribution of GE diagnostic imaging equipment including CT scanners, MRI systems, and PET/CT scanners such as GE Optima 580W RT CT Scanner and GE Discovery IQ PET/CT Scanner.
• ElektacoreChannel Partner/ Reseller/ DistributorDistribution of Elekta linear accelerators including Versa HD systems. ROS offers refurbished Elekta equipment with comprehensive support services.
• Siemens HealthineerscoreChannel Partner/ Reseller/ DistributorDistribution of Siemens medical imaging equipment including CT scanners and MRI systems. Equipment available through ROS inventory with full service support.
• Philips HealthcarecoreChannel Partner/ Reseller/ DistributorDistribution of Philips diagnostic imaging equipment including MRI systems and PET/CT scanners. Equipment available through ROS inventory.
• Canon Medical Systems (Toshiba)coreChannel Partner/ Reseller/ DistributorDistribution of Canon/Toshiba medical imaging equipment including CT scanners and MRI systems. Equipment available through ROS inventory.

Scale indicators5 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Block Imaging: Block Imaging refurbishes and resells used MRI, CT, and other diagnostic imaging systems globally. It is the closest direct competitor to ROS in the refurbished imaging market, sharing multi-OEM sourcing, installation, and parts support.
• Soma Tech Intl: Soma Tech Intl refurbishes, sells, and rents used medical equipment including imaging, surgical, and patient-monitoring devices. It directly overlaps ROS in refurbished multi-modality imaging and offers similar services and parts.
• Avante Health Solutions: Avante Health Solutions buys, refurbishes, and resells medical equipment across imaging, surgical, and patient-monitoring categories. It directly competes with ROS in providing cost-effective refurbished equipment to hospitals and surgery centers.
• Atlantis Worldwide: Atlantis Worldwide specializes in refurbished CT, MRI, and other diagnostic imaging equipment, with installation and service offerings. Its focus on affordable refurbished imaging closely mirrors ROS's positioning.

Broad incumbents

• Agiliti: Agiliti provides medical equipment management, rentals, and clinical engineering services at scale across U.S. health systems. It competes with ROS on equipment lifecycle services and parts, but as a broader incumbent not focused on radiation oncology.
• TRIMEDX: TRIMEDX is a large independent clinical engineering and medical equipment services provider to health systems. It overlaps with ROS on equipment maintenance, parts, and lifecycle management but serves a much broader device portfolio.
• Siemens Healthineers (Varian): Siemens Healthineers, owner of Varian Medical Systems, manufactures new linear accelerators, CT, MRI, and PET/CT systems and is a key OEM partner for ROS. As a broad incumbent, it competes with ROS via direct sales and certified pre-owned programs.
• Elekta: Elekta manufactures linear accelerators and radiation therapy equipment (e.g., Versa HD) that ROS refurbishes and resells. It is a primary OEM supplier but also a broad incumbent competing for new and certified pre-owned sales.
• GE HealthCare: GE HealthCare manufactures CT, MRI, and PET/CT systems (e.g., Optima 580W, Discovery IQ) that ROS distributes refurbished. As a broad incumbent, it competes for both new and used-equipment purchases in hospitals and imaging centers.
• Philips Healthcare: Philips Healthcare manufactures MRI, CT, and PET/CT systems that ROS refurbishes and resells. As a broad incumbent, Philips competes with ROS on new-equipment sales and increasingly on certified pre-owned imaging.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/radoncsystems
• Facebookfacebook.com/OncologySystems

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Radiation Oncology Systems