The present invention concerns a method for determining time windows in a scan sequence, in which values of setting parameters of a scan can be changed during a current scan without adversely affecting the scan data obtained with the scan, comprising loading a scan sequence; determining time windows in the scan sequence in which values of setting parameters can be changed during an execution of the scan sequence by analyzing useful coherences in the scan sequence; and determining storgae and/or further processing of the determined time windows. The inventive analysis of useful coherences can be easily implemented because the information required for this is already inherently contained in the scan sequence. The inventive method thereby allows time windows in scan sequences, in which setting parameters can be changed, to be determined particularly easily. By determining the time windows, in which setting parameters can be changed, the synchronization of the scanning process with the change in the setting parameters can be facilitated considerably. The determined time windows, moreover, can be used to save energy.