1. A method for examining an object containing a flowing liquid, the method comprising: illuminating the object with measuring light and recording at least one sequence of first images of the illuminated object, wherein an exposure time for each recording of an image of the sequence of first images is smaller than 1 ms; evaluating the at least one sequence of first images (k=1,. .. , N) by associating pixels (i,j) in the sequence of first images (I k (i,j)) to which same locations (x,y) of the object are imaged with a first analysis image value, respectively, wherein the first analysis image value depends on temporal changes of image values (I(t,i,j)) of the pixels (i,j) in the at least one sequence of first images (I k (i,j)) in a frequency range above 1 kHz; and evaluating the at least one sequence of first images (k=1,. .. , N), by further associating pixels (i,j) in the sequence of first images (I k (i,j)) to which same locations (x,y) of the object are imaged with a second analysis image value, respectively, wherein the second analysis image value depends on temporal changes of image values (I(t,i,j)) of the pixels (i,j) in the at least one sequence of first images (I k (i,j)) in a frequency range below 100 Hz.