System and method for modeling the caused by the gradient coils operation of the magnet field drift

摘要

A system and method for modeling a caused by the gradient coils operation of the magnet field drift contain a computer (20), which is programmed to control a during an mr - scans pulse sequence to be used to acquire and a power spectrum of a plurality of gradient pulses to determine the pulse sequence. The computer (20) is further programmed to calculate a drift of the magnetic field on the application of the plurality of gradient pulses by means of the plurality of gradient coils during the use of the pulse sequence is to be attributed, and the pulse sequence to be applied during the mr - scans. The computer (20) is further programmed, in order to mr - data on the basis of the application of the pulse sequence to acquire the acquired mr - data on the basis of the calculated drift of the magnetic field and to correct an image on the basis of the corrected mr - data to reconstruct.