Patent ID: 8506483

Claim:
An ultrasonographic device comprising: an ultrasonic probe configured to transmit an ultrasonic beam to an object and receive an ultrasonic echo signal; a transmission beam former configured to transmit a signal to the ultrasonic probe so as to cause the ultrasonic probe to emit the ultrasonic beam for scanning a sectoral region; a receiving beam former configured to receive echo signals from a plurality of data points on rasters in the sectoral region scanned by the ultrasonic probe; a memory configured to store therein, the echo signals from the plurality of data points as data sets for displaying an ultrasonogram; an interpolation processor configured to interpolate a data set between each adjacent two rasters in the data sets stored in the memory, where the interpolation processor interpolates the data set by using a plurality of interpolation methods used for differing depths measured with respect to a surface of the object, respectively, wherein the plurality of interpolation methods include linear interpolation applied in interpolating data sets positioned closer to the surface of the object than a switching depth, and sinc function interpolation applied in interpolating data sets positioned farther away from the surface of the object than the switching depth; and an inputter configured to receive an input of the switching depth representing a preset interpolation method transition depth set with respect to the surface of the object, where switching transition between the plurality of interpolation methods is performed.