Nov. 10, 2009--As leader of the European Union funded HYPERImage research project, Royal Philips Electronics (www.philips.com) announces that the project has achieved a major milestone in its ambitious plan to create a new medical imaging technique called hybrid PET/MR. This new technique is based on the simultaneous acquisition of time-of-flight positron emission tomography (PET) and magnetic resonance (MR) images.
The project involves eight partners from six European countries and has a total budget of around EUR 7 million. The ultimate goals of the project are to advance the accuracy of diagnostic imaging in cardiology and oncology and open up new fields in therapy planning, guidance and response monitoring.
A hybrid PET/MR scanner could simultaneously deliver the anatomical and functional information achievable using state-of-the-art MR scanners (e.g. soft tissue contrast and physiological processes in blood vessels) and the molecular imaging information provided by PET. As a result, it would combine the best of both worlds, which could ultimately help to pinpoint and characterize disease sites within the body more accurately than is currently possible.
For a hybrid scanner that offers simultaneous PET and MR image acquisition, two fundamental problems need to be solved: the development of MR-compatible PET detectors and a method of accounting for PET attenuation (the scattering of high-energy gamma rays generated by the PET tracers by parts of the human body).
The milestone that the HYPERImage team has reached is the development of a functional gamma-ray detector that meets the performance requirements of the latest time-of-flight PET scanners. The new gamma-ray detectors have been designed to be compatible with the strong static and dynamic magnetic fields that would be present in a combined PET/MR scanner. Furthermore, the team has achieved major progress with respect to MRI-based static and dynamic PET attenuation correction.