Fig. 4: Gradient coils and room-temperature shim coils design.
From: Ultrahigh-field animal MRI system with advanced technological update

a–c actively-shielded Z, X and Y gradient coils, respectively, d–g zonal shim coils Z0, Z2, Z3 and Z4, respectively and h–k tesseral shim coils ZX, ZY, X2-Y2 and XY, respectively.