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Let’s work together
to ensure X-ray
safety and quality

What we do matters. To patients. To professionals. To us.
It is more than algorithms, technology, and design.
It is about setting the standard for quality assurance of X-ray imaging.

RTI 40th Anniversary logo


A vital detail in the big picture, making a huge difference

RTI Group is a world-leading manufacturer of X-ray testing and QA solutions.

In 1982, we introduced the DIGI-X, marking a significant milestone as the first X-ray QA system for diagnostic radiology. Since then, innovation has remained the cornerstone of our corporate philosophy, driving us to pioneer numerous QA procedures. Dedicated to pushing the boundaries of X-ray QA across all modalities, we consistently invest in research and development.

As a testament to our commitment to innovation, we are proud to unveil our latest achievement: Mako, the result of our cutting-edge advancements. Launched in November 2023, the Mako X-ray QA meter boasts groundbreaking sensor technology, delivering unparalleled accuracy. Recognized as the most efficient and versatile meter in the industry, Mako sets new standards with its broad application range.

Longer and more active lives, combined with a string of new examination techniques, have made diagnostic radiology the most widely used medical imaging technology. Diagnostic imaging growth can be seen throughout the healthcare sector, including orthopedic and vascular imaging, plus full-body scanning. This will be a continuing trend, thanks to a shift in focus to more advanced healthcare globally.

As X-ray examinations increase, there is a higher risk of patient and staff exposure to levels of X-ray radiation that could result in negative health implications. As a long-standing member of, among others, IEC, AAPM, and MITA, we are proud to participate in work to research, develop and evolve diagnostic radiology standards. A key company-wide goal is also to educate customers and partners, sharing our deep knowledge of X-ray QA best-practice to protect patients and staff in an ever more complex operational environment.

Our QA solutions are used worldwide by hospitals, manufacturers of X-ray equipment, service providers, and government authorities, across all different modalities, including Rad/Fluoro, Dental, CT, Mammography, interventional, and surgery (C-arms).

Today, we are represented globally through offices in Europe, the USA, and Asia, as well as by 100 distributors worldwide.


Elin Sahlberg, CEO

RTI Group CEO Elin Sahlberg


Elin Sahlberg has assumed the role of CEO of RTI Group effective January 1, 2024. Elin has been with the company since 2018, previously serving as Group CFO.

Elin Sahlberg, CEO at RTI Group


As part of a student team at Chalmers University of Technology, Gothenburg, Sweden., Lars Herrnsdorf and Ulf Toll, our company cofounders, developed one of the first non-invasive kVp meters in the world.


▪ Lars and Ulf formed Innova Electronics.
The beginnings of RTI!
▪ ‘Innova’ produced VRH 01, the first commercial wind speed meter used to determine suitable locations for wind turbines as an alternative energy source.


▪ After a company name change, RTI Electronics AB. was founded.
▪ In 1982, the Digi-X was launched – a state-of-the-art QC and first commercially available X-ray multimeter to measure non-invasive kV.


RTI signed its first distributor agreements to export the Digi-X.
The multimeter was delivered until 1995.


Mini-X was launched as the first self-contained kVp/time meter. Four Mini-X models were subsequently developed until 1991.


RTI exhibited at RSNA Chicago for the first time.


The PMX-II was introduced as the first all-in-one meter to measure both Rad and Mammo.


▪ oRTIgo unveiled as the first X-ray QA software to automatically collect data, perform analysis, and create a report.
▪ PMX-III launched - the first X-ray multimeter to use a solid-state detector for dose measurements. Available until 2002.


The Solidose 100/200 was introduced as the first dosimeter to use both solid-state and ion chambers.


▪ Visi-X, the first film-less radiation/light field analyzer was launched.
▪ MAS-2 unveiled. It was the first non-invasive mAs probe for X-ray QA.


▪ The Solidose 300 digital dosemeter (dose and dose rate) was introduced.
▪ The first light probe connects directly to an X-ray Multimeter.


RFM (Real-Time Focus Meter), the first electronic focal spot measuring device, was launched.


oRTIgo for Windows operating system was released.


The Barracuda platform was launched, with the first systems shipped to AGFA Healthcare Corporation, Greenville, SC, USA. It was the first X-ray multimeter to measure kVp, dose, dose rate, time, dose/pulse, pulse rate, mA, mAs, TF, and HVL in one exposure, on all modalities!


▪ The mAs-3 was launched. It is the first non-invasive mAs probe to measure low currents during Fluoro.
▪ The last PMX-III was delivered.
Many still come in for recalibration 20 years later.


The Barracuda became the first wireless X-ray platform.
We still receive these distinctive red units for service and calibration.


▪ A US office opened in New Jersey – RTI Group Inc.
▪ We introduced the world’s first commercial tool to measure dose profiles with helical scans – the CT-SD16.


The Red Piranha platform with integrated modules and detectors, supported by the new Windows-based oRTIgo software package.


We introduce the world’s first transparent detector for AEC measurements, the T-20, and also introduce the rotation symmetrical and angle independent point dose detector CT Dose Profiler to replace the CT-SD16.


The first release of our trademark Ocean™ X-ray QA software, replacing oRTIgo.


The Cobia platform was launched to facilitate X-ray Quality Control. Available until 2012.


The Black Piranha premium platform for complete X-ray QA was introduced.


Since its launch in 2001, over 1500 Barracuda units had been delivered.


Ocean Quick Check was released. This was a simpler software application targeting Service Engineers.


We open APAC market operations in Singapore – RTI Group APAC.


RTI Academy launched, providing online and classroom training to meet the X-ray QA needs of our customers, networks, and partners.


▪ At the RSNA Chicago Annual Meeting, held in December, a major company rebrand with a new logo, website, and solutions design were unveiled.
▪ During the year, all Cobias, thus all RTI meters, became wireless.
▪ We launched our own CT Ion Chambers (10 cm & 30 cm).


RTI Group Europe was established with an office in London, UK.


▪ RTI celebrates 40 years since its establishment and the design of the DIGI-X, the first commercially available X-ray Multimeter to measure non-invasive kV.
▪ The RTI Scatter Probe and Ocean Next™ software were released. In December, the RTI Academy classroom was completed and ready for onsite training.


▪ The 40th anniversary of the launch and sale of the RTI DIGI-X meter. A milestone in the history of X-ray safety and QA.
▪ On 10 January, the RTI Academy classroom was officially opened and welcomed its first students.


▪ Launch of our new revolutionary product Mako! The most efficient and accurate meter, with new sensor technology.


RTI Reports 40% Growth in Product Sales for the First Half of 2024

We are proud to present that RTI has reported a 40% increase in product sales for the first six months of 2024 compared to the same period in 2023. This significant growth coincides with the launch of Mako, RTI’s new premium solution for X-ray quality assurance. Mako is the most efficient and accurate meter available, offering the broadest application range in the market. ...

myRTI: Achieves Over 100% Growth in the Past Year

myRTI is a comprehensive cloud-based QA platform designed to manage complex medical equipment data and measurements, support multimodal equipment management, and provide tools for intra-organizational workflows and tasks....

Elin Sahlberg new CEO

RTI announces the appointment of Elin Sahlberg as CEO of RTI Group from January 1, 2024.
Elin has been with the company since 2018 and comes from a position as Group CFO....