▎ 摘　　要

NOVELTY - The probe has a case to form an exterior appearance. A piezoelectric layer (54) is provided in the case to generate ultrasonic waves. A backing layer (52) is provided at the rear of the piezoelectric layer to prevent the ultrasonic waves from being transmitted backward from the piezoelectric layer. A heat-radiation unit (50) which includes graphene radiates heat transmitted from the piezoelectric layer to outside of the case. USE - Probe for ultrasonic diagnostic apparatus. ADVANTAGE - A matching layer serves to reduce a difference in acoustic impedance between the piezoelectric layer and an object to be examined so that the ultrasonic waves generated from the piezoelectric layer are effectively transmitted to the object. Since the heat-radiation unit has a size corresponding to the whole area of the lateral surface of the main body, a heat radiation area may be enlarged and accordingly heat radiation efficiency may be increased. DESCRIPTION OF DRAWING(S) - The drawing is a perspective view showing a probe for an ultrasonic diagnostic apparatus. Heat-radiation unit (50) Backing layer (52) Piezoelectric layer (54) Matching layer (56) Acoustic lens (58)