US 12,276,714 B2
Gradient coil unit free of active screening
Peter Dietz, Fürth (DE)
Assigned to Siemens Healthineers AG, Forchheim (DE)
Filed by Siemens Healthcare AG, Forchheim (DE)
Filed on Jun. 29, 2023, as Appl. No. 18/215,888.
Claims priority of application No. 10 2022 206 592.1 (DE), filed on Jun. 29, 2022.
Prior Publication US 2024/0004011 A1, Jan. 4, 2024
Int. Cl. G01R 33/34 (2006.01); G01R 33/385 (2006.01); G01R 33/421 (2006.01)
CPC G01R 33/385 (2013.01) [G01R 33/4215 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A gradient coil assembly designed as a hollow cylinder surrounding a patient receiving region in a longitudinal direction and subdivided into four quadrants, the gradient coil assembly comprising:
a primary coil comprising a conductor structure that includes a geometric arrangement of an electrical conductor with a conductor cross-section arranged within a quadrant of the four quadrants,
wherein the quadrant comprises a neutral region that is defined in the longitudinal direction between a first longitudinal position and a second longitudinal position,
wherein a current density averaged over the neutral region is less than 25% of a maximum current density averaged over the conductor cross-section within the neutral region, and
wherein the gradient coil assembly does not include a secondary coil and/or an active screening.