1. An ultrasound diagnosis apparatus, comprising: an ultrasound probe having a plurality of piezoelectric transducers configured to insonify a subject and receive an echo signal resulting from an insonification; an image processor coupled to the ultrasound probe and configured to prepare image data based on the echo signal; a measurement processor coupled to the image processor and configured to conduct a measurement on the image data with respect to a predetermined feature of the subject; a graph processor coupled to the measurement processor and configured to prepare a trend graph based on the measurement when the insonification and an image preparation are conducted for a plurality of time points; a display coupled to the graph processor and configured to display the trend graph; and an input unit including a user-operative device that is configured to designate a time point of the plurality of time points on the displayed trend graph by positioning a cursor on a time point, wherein a system controller is configured to cause the display to display a first content as related information when the cursor is positioned at the time point without a click-on operation by the user-operative device, wherein the first content includes a date of a measurement corresponding to the designated time point and at least one of a lower limit value, an average value, and an upper limit value, and to cause the display to no longer display the first content, but to display a second content different from the first content as the related information when the cursor is positioned at the time point with a single click-on operation by the user-operative device, wherein the second content includes a plurality of measurement values, other than measurement values displayed on the trend graph, that correspond to the designated time point.