1. A medical imaging apparatus comprising: an image processor configured to extract properties that an object has with respect to at least one feature, from each medical image among a plurality of medical images of the object, by using values of pixels and a detected edge in each medical image based on at least one of pre-stored reference values and a pre-stored data, wherein the at least one feature comprises at least one of a shape, an orientation, a margin, a posterior, and an echo; a controller configured to control a display to display a first medical image from among the plurality of medical images and the extracted properties, and display a plurality of first properties shown in the first medical image from among the properties, and a plurality of second properties from among the properties not shown in the first medical image, in such a manner that the first properties and the second properties are distinguished from each other; and an input device configured to receive an input for selecting at least one of the second properties, wherein the controller is further configured to: control the display to display a list of the plurality of the first properties in a first region and display a list of the plurality of the second properties in a second region that is distinguished from the first region, and control the display to display a second medical image showing the selected second property from among the plurality of medical images, wherein the controller is further configured to quantify a degree to which the second property is shown in each of the plurality of medical images, and control the display to display a graph based on each quantified degree.