1. A magnetic resonance imaging system for acquiring magnetic resonance data from an imaging zone, wherein the magnetic resonance imaging system comprises: a processor for controlling the magnetic resonance imaging system; and a memory for storing machine executable instructions for execution by the processor, wherein execution of the machine executable instructions causes the processor to repeatedly: control the magnetic resonance imaging system to acquire a portion of the magnetic resonance data, wherein each portion of the magnetic resonance data comprises navigator data; create a set of navigator vectors by extracting the navigator data from each portion of the magnetic resonance data; construct a dissimilarity by calculating a metric between each of the set of navigator vectors; generate a matrix classification of the dissimilarity matrix using a classification algorithm; and control the magnetic resonance imaging system to modify acquisition of the magnetic resonance data using the matrix classification.