Patent ID: 6759847
Filing Date: 2004-07-06
Classification: A61B,G01R

Abstract:
A method for magnetic resonance imaging with adherence to Specific Absorption Rate (SAR) limit values, comprising the steps of:conducting a magnetic resonance examination having planned parameters associated therewith, of a patient having patient data associated therewith, by exposing said patient to a radio-frequency pulse sequence using at least one radio-frequency transmission antenna to produce magnetic resonance signals in said patient, acquiring said magnetic resonance signals from said patient in a spatially resolved manner via at least one reception antenna, and processing said magnetic resonance signals to obtain an examination result selected from the group consisting of a magnetic resonance image and a spectrum; before conducting said magnetic resonance measurement, identifying a position of said patient relative to said transmission antenna by an imaging magnetic resonance pre-measurement; and before conducting said magnetic resonance measurement, determining SAR values dependent on said patient data and said position of the patient relative to the transmission antenna, and modifying said planned parameters as needed until said SAR value is within a predetermined SAR limit.