Method and device for position determination in a magnetic resonance tomography unit

US10393829B2 · kind B2 · utility

Assignee

• Siemens Healthcare Limited · DE

Inventors

• Klaus Ludwig · Erlangen, DE
• Volker Schnetter · Nuremberg, DE
• Johann Sukkau · Herzogenaurach, DE
• Andrew Dewdney · Fairview Avenue, DE
• Axel Heitland · Erlangen, DE
• Ralf Ladebeck · Erlangen, DE
• Ronny Pflichtbeil · Fürth, DE
• Jörg Rothard · Litzendorf, DE
• Volker Weißenberger · Steinfeld (Oldenburg), DE

Key dates

• Filing date: Feb 28, 2017
• Grant date: Aug 27, 2019
• Expiry date: Aug 28, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/481
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for determining a position of a mobile device relative to a B0 field magnet along a z-coordinate axis, and a device and a magnetic resonance tomography unit for performing the method are provided. The device includes a magnetic field strength sensor arranged in a fixed relative position. A characteristic magnetic field strength Bref of the B0 field magnet that emerges for a plurality of x-y coordinate pairs with a same reference z-coordinate zref is ascertained. The device is moved along the z-coordinate axis until the magnetic field strength sensor measures the characteristic magnetic field strength Bref.