MRI makes it possible to see implants and instruments

MRI scanners make use of a number of different magnetic fields. Image quality is reduced if something interferes with these fields, for example, the material used in an implant. However, these disruptions can also be utilized. Hans Peeters has shown that MRI images can provide information about internal distortions in implant materials even though this cannot be seen on the outside. Peeters also demonstrated how MRI images can be used to find and classify foreign objects and to show instruments during MR-guided interventions. In the latter application, the ability to see instruments with ferromagnetic markers improved to such an extent that scanning rates of up to 20 images a second can be achieved.

Hans Peeters

Analysis and exploitation of field imperfections in magnetic resonance imaging

PhD advisor: Prof. M.A. Viergever
Co-advisor: Dr. C.J.G. Bakker