Michael S. Poole1, Nadim Jon Shah1, 2, Rob Hawkes3
1INM-4, Forschungszentrum Juelich, Juelich, Nordrhein-Westfalen, Germany; 2Neurologische Klinik, Universitaetsklinikum Aachen, Aachen, Nordrhein-Westfalen, Germany; 3Wolfson Brain Imaging Centre, Addenbrookes Hospital, Cambridge, Cambridgeshire, United Kingdom
The redesign of split gradient coils for a hybrid MR-PET system is considered. Numerous changes in the coil design are assessed for their performance with the aim of making the coil more robust. New design strategies and a slackening of design constraints are also assessed for their ability to mitigate any performance loss from making the coils more robust. A linking annulus was found to be essential, but we enforce radial connections for simplifying the construction. A complex relationship exists between the design constraints and the coil performance, which needs to be considered carefully before a final design is constructed.