Design of small-scale gradient coils in magnetic resonance imaging by using the topology optimization method
Pan Hui1, 2, Jia Feng3, †, Liu Zhen-Yu1, ‡, Zaitsev Maxim3, Hennig Juergen3, G Korvink Jan4
       

Boundary conditions of design subdomain Ω1 for (a) z-gradient coils and (b) y-gradient coils.