US 11,899,084 B2
Magnetic resonance imaging device with asymmetric field generation unit
Michael Mallett, Faringdon (GB); Adrian Mark Thomas, Bicester (GB); Matthias Gebhardt, Erlangen (DE); Stephan Biber, Erlangen (DE); Andreas Krug, Fürth (DE); Stefan Popescu, Erlangen (DE); Lars Lauer, Neunkirchen (DE); and Andreas Greiser, Erlangen (DE)
Assigned to Siemens Healthcare GmbH, Erlangen (DE)
Filed by Siemens Healthcare GmbH, Erlangen (DE)
Filed on Mar. 28, 2022, as Appl. No. 17/705,839.
Claims priority of application No. 21165607 (EP), filed on Mar. 29, 2021.
Prior Publication US 2022/0308142 A1, Sep. 29, 2022
Int. Cl. G01R 33/34 (2006.01); G01R 33/38 (2006.01); G01R 33/3815 (2006.01); G01R 33/383 (2006.01); G01R 33/385 (2006.01); G01R 33/421 (2006.01); G01R 33/483 (2006.01); G01R 33/56 (2006.01)
CPC G01R 33/3806 (2013.01) [G01R 33/34 (2013.01); G01R 33/34023 (2013.01); G01R 33/383 (2013.01); G01R 33/385 (2013.01); G01R 33/3815 (2013.01); G01R 33/4215 (2013.01); G01R 33/4835 (2013.01); G01R 33/56 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A magnetic resonance imaging (MRI) device comprising:
a field generator including a first magnet and a second magnet confining an imaging volume of the magnetic resonance imaging device in two spatial directions, the field generator being configured to provide a static magnetic field within the imaging volume, wherein:
the first magnet and the second magnet are arranged asymmetrically with respect to the imaging volume and configured to provide an access to the imaging volume along at least two perpendicular spatial directions, the first magnet and/or the second magnet including a pole face directed towards the imaging volume, wherein the pole face has a shape of a cone, a frustum, or a hemisphere; and
a direction of access to the imaging volume is angled with respect to a main magnetic field direction of the magnetic field in the imaging volume.