US 12,405,331 B2
Shielded gradient assembly
Augustinus Bertus Petrus Van Hest, Best (NL); Jan Konijn, Den Bosch (NL); Johannes Adrianus Overweg, Uelzen (DE); and Martijn Krelis Termeer, Poppel (BE)
Assigned to Koninklijke Philips N.V., Eindhoven (NL)
Appl. No. 18/279,230
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Mar. 1, 2022, PCT No. PCT/EP2022/055124
§ 371(c)(1), (2) Date Aug. 29, 2023,
PCT Pub. No. WO2022/184698, PCT Pub. Date Sep. 9, 2022.
Claims priority of application No. 21160206 (EP), filed on Mar. 2, 2021; and application No. 21190560 (EP), filed on Aug. 10, 2021.
Prior Publication US 2024/0151792 A1, May 9, 2024
Int. Cl. G01R 33/421 (2006.01); G01R 33/385 (2006.01)
CPC G01R 33/4215 (2013.01) [G01R 33/3856 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A shielded gradient coil assembly configured to generate a gradient magnetic field, the assembly comprising:
a plurality of radially inner and outer coaxial cylindrical surfaces;
a gradient field coil arrangement on the radially inner cylindrical surfaces including:
a longitudinal gradient field coil system having one or more axial circumferential electrically conducting hollow z-field windings having a first transverse cross-section,
a transverse gradient field coil system having hollow (x,y)-field electrical conductors having a second transverse cross-section and arranged as saddle coils on the surfaces of the inner cylindrical surfaces,
a gradient shield coil arrangement on the radially outer cylindrical surfaces including:
a longitudinal gradient shield coil system having one or more axial circumferential electrically conducting hollow z-shield electrical conductors having a third transverse cross-section,
a transverse gradient shield coil system having solid electrical conductors arranged as saddle coils on the surfaces of the outer cylindrical surfaces,
wherein the third transverse cross-section is larger than the first transverse cross-section and the second transverse cross-section.