About us

RTI Group is a world-leading manufacturer of Quality Assurance (QA) solutions.

In 1982 we launched the DIGI-X, the first X-ray QA system for diagnostic radiology. Since then, innovation has been at the heart of our corporate philosophy, and we have pioneered many QA procedures. We continue to invest heavily in R&D to push forward the very edge of X-ray QA, across all modalities.

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.

Company Highlights



Looking ahead to 2022
The 40th anniversary of the launch of the Digi-X meter!


The RTI Scatter Probe and Ocean Next™ software are released. 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.


RTI Group Europe is established with offices in London and Bournemouth, UK.


At the RSNA Annual Meeting, Chicago, held in December, a major company rebrand with a new logo, website, and solutions is unveiled.

All Cobias, thus all RTI meters, are now wireless. Cables belong to the past!

As the pioneers in solid-state technology, we launch a new CT Ion Chamber.


RTI Academy is launched, providing online and classroom training to meet the QA needs of our customers and partners.


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


Ocean Quick Check was released; a simpler software application targeting service engineers.


Since 2001, over 1500 Barracuda meters had been delivered.


The Black Piranha premium platform for complete QA was introduced.


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


The first release of our Ocean software, replacing oRTIgo.


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 that replaces the CT-SD16.


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


A US office is opened in New Jersey – RTI Group Inc.

We introduce the world’s first commercial tool to measure dose profiles with helical scans – the CT-SD16.


Barracuda becomes the first wireless X-ray platform.


The mAs-3 is launched. It is the first non-invasive mAs probe to measure low currents during Fluoro.

The last PMX-III was delivered. Almost 20 years later, many still come in for re-calibration.


The Barracuda platform is launched, with the first systems shipped to AGFA Healthcare Corporation, Greenville, SC, USA.
It is 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.


oRTIgo for Windows released.


RFM, the first electronic focal spot measuring device, was launched.


The Solidose 300 digital dosemeter was introduced.

The first light probe connects directly to an X-ray Multimeter.


Visi-X, the first film-less radiation/light field analyzer was launched.

MAS-2 unveiled. It is the first non-invasive mAs probe for X-ray QA.


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


Our pioneering QA software oRTIgo was unveiled.
oRTIgo was the first QA software to automatically collect data, perform analysis, and create a report.

PMX-III was introduced, the first X-ray multimeter to use a solid-state detector for dose measurements.
It guarantees accuracy from a single sample/exposure QA measurement.


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


RTI exhibit at RSNA, Chicago, for the first time. We continue to exhibit at this major, annual event.


Mini-X is launched, the first self-contained kVp/time meter.


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


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


Lars and Ulf form Innova ElectronicsThe beginnings of RTI!
‘Innova’ produces the first commercial wind speed meter.


Our founders – Lars Herrnsdorf and Ulf Toll – developed one of the first non-invasive kVp meters in the world while students at Chalmers University, Gothenburg, Sweden.


RTI founders Lars Herrnsdorf and Ulf Toll