have a long waiting time w 1 in which no image data are acquired followed by in the end diastole a relatively short acquiring time a 1 waiting time w 1 makes up by far the longest part of the cardiac cycle which accordingly remains unused for acquiring data fig1 b shows a sketch of a heart exposure h 1 corresponding to fig1 a that was created from image data acquired in the end diastolic phase a limitation to the first image acquiring technique having the short exposure time window a 1 thus yields only a limited amount of data that can be used to create a diagnosis fig1 c shows a sketch for the use of waiting time w 1 of fig1 a using a second image acquiring technique according to the method of the present invention a sketch of electrocardiogram e 1 is again shown but here only a single cardiac cycle is shown time bar b 1 accompanying electrocardiogram e 1 now shows besides acquiring time a 1 a used waiting time wn 1 in which data for the individual cardiac phases are produced at particular time intervals using a second image acquiring technique cine technique in order to create a functional representation of the heart these data are thus made available without a prolongation of the examination time in addition to the image data acquired using the first acquiring technique during acquiring time a 1 and can replace further examinations if necessary thus the device for creating cardiac exposures h 1 such as that shown in fig1 b can be used more effectively because more patients can be examined in a shorter time the second image acquiring technique creates a.