Research · Innovation · Quality

Medical Imaging Phantoms

Designing & Manufacturing Phantoms Since 1955

Leeds Test Objects Ltd is a manufacturer of medical X-ray test objects, or phantoms, based in the north of England. These phantoms, the first of which was manufactured in 1955, have become world renowned as a clinical standard for establishing the correct operating performance of X-ray machines, following their adoption for clinical use by the U.K. Health Service (NHS) in 1973 and as a testing protocol by the U.K. Hospital Physicists’ Association (I.P.E.M.) in 1979.

Our many customers worldwide include radiographers, medical physics departments and major multi-national organisations. Our network of distributors enables us to provide our phantoms internationally. For countries not listed under our distributors please contact us directly.

Leeds Test Objects phantoms - about

Our Mission

We aim to provide the medical imaging professional with the highest quality phantoms available, providing you with the tools to ensure your imaging systems are working optimally, leaving you with no doubt over image quality.

We believe there should be no compromise in these standards.

Leeds Test Objects - Research


With a proud history of involvement in research & development, we are constantly pushing the boundaries in our field.

Leeds Test Objects - Innovation


We deliver innovative solutions for image quality assessment of the latest imaging equipment, offering an extensive range of phantoms.

Leeds Test Objects - Quality


Our phantoms are produced to extremely tight tolerances, from high-purity materials of the finest quality.

BSI ISO 9001

Leeds Test Objects are certified for our internal quality management systems to ensure strict quality standards. View Certificate

Our Green Policy

Read about our commitment to the environment, which we have integrated into our procedures, reducing waste wherever possible. View Policy