The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2010
Filed:
Mar. 21, 2008
Dirk Diehl, Erlangen, DE;
Wolfgang Renz, Erlangen, DE;
Lorenz-peter Schmidt, Hessdorf, DE;
Ulrich Von Knobloch, Munich, DE;
Dirk Diehl, Erlangen, DE;
Wolfgang Renz, Erlangen, DE;
Lorenz-Peter Schmidt, Hessdorf, DE;
Ulrich Von Knobloch, Munich, DE;
Siemens Aktiengesellschaft, Munich, DE;
Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen, DE;
Abstract
A magnetic resonance system has a basic magnet that generates a static basic magnetic field in an examination volume, and a whole-body antenna that emits a homogeneous radio-frequency field in the examination volume, the homogeneous radio-frequency field exhibiting an excitation frequency so that nuclei in an examination subject in the examination volume are excited to emit magnetic resonance signals, and a radio-frequency shield. The radio-frequency shield is arranged between the whole-body antenna and the basic magnet. The whole-body antenna is arranged between the radio-frequency shield and the examination volume. The radio-frequency shield is fashioned to exhibit a high shielding effect in a shielding frequency range that encompasses the excitation frequency. The shielding effect drops to a significantly lower shielding effect on both sides at side bands adjoining the shielding frequency range. The shielding frequency range and the side bands exhibit bandwidths that are significantly smaller than the excitation frequency.