Method for operating a magnetic resonance tomography apparatus with shim coil adjustment dependent on positional changes of the imaged region

US6509735B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Edgar Mueller · Heroldsbach, DE
• Stefan Thesen · Dormitz, DE

Key dates

• Filing date: Dec 11, 2000
• Grant date: Jan 21, 2003
• Expiry date: Dec 11, 2020

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/3875
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

In a method for operating a magnetic resonance tomography system having a shim coil arrangement and a gradient coil arrangement, in which, in order to generate an image dataset of a region of an examination subject to be imaged, at least the region that is to be imaged is borne in an imaging volume of the system, an initial shim adjustment procedure is carried out, a change (if it occurs) in the position of the imaged region in relation to the imaging volume is detected, and a current in the shim coil arrangement is modified dependent on the detected position change.