Method for operating a magnetic resonance imaging device for imaging a subject using a spin echo based sequence, comprising the process steps of - starting the sequence with a predetermined set of parameters, wherein the predetermined set of parameters for the sequence includes acquisition parameters to be used for or in the spin echo based sequence as well as parameters or settings for the magnetic resonance imaging device and/or one or more of components thereof, and wherein the sequence comprises multiple successive pulse trains each comprising at least one excitation pulse followed by readouts of a respective echo train to acquire image data for the subject, - during the sequence in addition to the image data readouts acquiring correction data (21, 25) by means of at least one additional readout (23, 26, 27) during at least a predetermined subset of multiple of the pulse trains, characterised in that - the correction data (21, 25) acquired during a first pulse train of the predetermined subset of pulse trains is defined as reference data, - the correction data (21, 25) acquired during subsequent pulse trains of the predetermined subset of pulse trains after the first pulse train is compared to the reference data to determine a difference indicating a parameter shift in a parameter of the predetermined set of parameters, - if such a difference is detected for one of the subsequent pulse trains of the predetermined subset of pulse trains, then, by means of a model of the magnetic resonance imaging device and/or the one or more components thereof, a compensation for the difference is automatically determined in dependence on the difference and is applied to the predetermined set of parameters for at least the respective next pulse train and/or to the image data acquired in at least the respective next pulse train. - starting the sequence with a predetermined set of parameters, wherein the predetermined set of parameters for the sequence includes acquisition parameters to be used for or in the spin echo based sequence as well as parameters or settings for the magnetic resonance imaging device and/or one or more of components thereof, and wherein the sequence comprises multiple successive pulse trains each comprising at least one excitation pulse followed by readouts of a respective echo train to acquire image data for the subject, - during the sequence in addition to the image data readouts acquiring correction data (21, 25) by means of at least one additional readout (23, 26, 27) during at least a predetermined subset of multiple of the pulse trains, - the correction data (21, 25) acquired during a first pulse train of the predetermined subset of pulse trains is defined as reference data, - the correction data (21, 25) acquired during subsequent pulse trains of the predetermined subset of pulse trains after the first pulse train is compared to the reference data to determine a difference indicating a parameter shift in a parameter of the predetermined set of parameters, - if such a difference is detected for one of the subsequent pulse trains of the predetermined subset of pulse trains, then, by means of a model of the magnetic resonance imaging device and/or the one or more components thereof, a compensation for the difference is automatically determined in dependence on the difference and is applied to the predetermined set of parameters for at least the respective next pulse train and/or to the image data acquired in at least the respective next pulse train.