Method and device for active suppression of electric and/or magnetic fields emitted during magnetic resonance acquisitions

#The present application hereby claims priority under 35 U.S.C. § 119 to German patent application number DE102020211439.0 filed Sep. 11, 2020, the entire contents of which are hereby incorporated herein by reference.

#Example embodiments of the invention generally relate to a method for active suppression of electric and/or magnetic emissions from a magnetic resonance device, and to a magnetic resonance device having a corresponding suppression apparatus.

#Magnetic resonance devices (also known as magnetic resonance systems) are imaging apparatuses which, in order to image an object under examination, align nuclear spins of the object under examination with a strong external magnetic field, and use an alternating magnetic field to excite the nuclear spins to precess about this alignment. The precession or return of the spins from this excited state into a low-energy state in turn produces as a response an alternating magnetic field, which is received via antennas.

#Further features and advantages of the invention are disclosed in the following explanations of example embodiments with reference to schematic drawings. Modifications mentioned in this connection can be combined with one another to form new embodiments. The same reference signs are used for the same features in different figures,

#in which:

#FIG. 1 is a schematic diagram of a magnetic resonance device having a suppression apparatus according to the invention according to an embodiment;

#The drawings are to be regarded as being schematic representations and elements illustrated in the drawings are not necessarily shown to scale. Rather, the various elements are represented such that their function and general purpose become apparent to a person skilled in the art. Any connection or coupling between functional blocks, devices, components, or other physical or functional units shown in the drawings or described herein may also be implemented by an indirect connection or coupling. A coupling between components may also be established over a wireless connection. Functional blocks may be implemented in hardware, firmware, software, or a combination thereof.

#Various example embodiments will now be described more fully with reference to the accompanying drawings in which only some example embodiments are shown. Specific structural and functional details disclosed herein are merely representative for purposes of describing example embodiments. Example embodiments, however, may be embodied in various different forms, and should not be construed as being limited to only the illustrated embodiments. Rather, the illustrated embodiments are provided as examples so that this disclosure will be thorough and complete, and will fully convey the concepts of this disclosure to those skilled in the art. Accordingly, known processes, elements, and techniques, may not be described with respect to some example embodiments. Unless otherwise noted, like reference characters denote like elements throughout the attached drawings and written description, and thus descriptions will not be repeated. At least one embodiment of the present invention, however, may be embodied in many alternate forms and should not be construed as limited to only the example embodiments set forth herein.

#It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, components, regions, layers, and/or sections, these elements, components, regions, layers, and/or sections, should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention. As used herein, the term “and/or,” includes any and all combinations of one or more of the associated listed items. The phrase “at least one of” has the same meaning as “and/or”.