An information providing method which is executable by an ultrasound apparatus, the method comprising: displaying an ultrasound image which relates to an object on a screen; determining a number of slide bars for adjusting time gain compensation values of the ultrasound image based on predefined condition information; and displaying, on the screen, a plurality of slide bars corresponding to a plurality of depths of the ultrasound image according to the determined number of slide bars, wherein the determining of the number of the slide bars is based on an entire depth of the ultrasound image and predefined intervals of the plurality of depths of the ultrasound image and comprises identifying the entire depth of the ultrasound image wherein the method further comprises increasing the number of slide bars as the entire depth of the ultrasound image increases, characterized in that the method further comprises receiving an input for adjusting the predefined intervals of the plurality of depths of the ultrasound image; and modifying the determined number of the slide bars according to the adjusted intervals of the plurality of depths, wherein the receiving of the input comprises: receiving an input for selecting a region of interest in the ultrasound image; and adjusting the predefined intervals of depths corresponding to the region of interest, wherein the modifying the determined number of the slide bars comprises: modifying a number of slide bars corresponding to depths of the selected region of interest in accordance with the adjusted intervals of depths; and displaying the modified number of slide bars corresponding to the depths of the selected region of interest. displaying an ultrasound image which relates to an object on a screen; determining a number of slide bars for adjusting time gain compensation values of the ultrasound image based on predefined condition information; and displaying, on the screen, a plurality of slide bars corresponding to a plurality of depths of the ultrasound image according to the determined number of slide bars, wherein the determining of the number of the slide bars is based on an entire depth of the ultrasound image and predefined intervals of the plurality of depths of the ultrasound image and comprises identifying the entire depth of the ultrasound image wherein the method further comprises increasing the number of slide bars as the entire depth of the ultrasound image increases, characterized in that the method further comprises receiving an input for adjusting the predefined intervals of the plurality of depths of the ultrasound image; and modifying the determined number of the slide bars according to the adjusted intervals of the plurality of depths, wherein the receiving of the input comprises: receiving an input for selecting a region of interest in the ultrasound image; and adjusting the predefined intervals of depths corresponding to the region of interest, receiving an input for selecting a region of interest in the ultrasound image; and adjusting the predefined intervals of depths corresponding to the region of interest, wherein the modifying the determined number of the slide bars comprises: modifying a number of slide bars corresponding to depths of the selected region of interest in accordance with the adjusted intervals of depths; and displaying the modified number of slide bars corresponding to the depths of the selected region of interest. modifying a number of slide bars corresponding to depths of the selected region of interest in accordance with the adjusted intervals of depths; and displaying the modified number of slide bars corresponding to the depths of the selected region of interest.