MRT and method for operating a clinical pTX system

US10830857B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Ralph Kimmlingen · Zirndorf, DE
• Norbert Rietsch · Dormitz, DE

Key dates

• Filing date: Aug 5, 2015
• Grant date: Nov 10, 2020
• Expiry date: Aug 14, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/246
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and a magnetic resonance tomography (MRT) system are provided. The MRT system includes a controller configured to store a transmit vector that is established on a local-coil-specific basis. The transmit vector, for a specific local coil, indicates with which amplitudes and phases, transmit elements of the local coil may be controlled by a transmit device. The controller is configured to initiate a patient-specific calibration measurement on a patient to generate patient-specific calibration data representing a field distribution. The controller is also configured to determine deviations in the patient-specific calibration data from the stored transmit vector established on a local-coil-specific basis. The patient-specific calibration data is generated in the patient-specific calibration measurement on the patient and represents a field distribution. An imaging MRT measurement is not allowed if deviations exceed a threshold value, but is otherwise performed and is monitored by a monitoring device.