| 摘要 |
PROBLEM TO BE SOLVED: To provide a mechanism detecting the relative movement for a living body of an ultrasonic probe accurately by providing the ultrasonic probe with a first transducer array consisting of a first arranged transducer and a second ultrasonic transducer transmitting and receiving ultrasonic waves diagonally on a contact surface. SOLUTION: This ultrasonic probe part is an ultrasonic probe provided with a so-called sector operation type ultrasonic probe, and a contact surface 27 for a living body of the ultrasonic probe comes into contact with a body surface of the living body or an inner wall 1e of celom. The probe part is provided with an ultrasonic transducer array in which a plurality of first ultrasonic transducers are arranged and facing the contact surface 27 with the living body of the ultrasonic probe and a second ultrasonic transducer 24. This second ultrasonic transducer 24 is arranged obliquely (at an angle θ) for the contact surface 27, for example, water or an ultrasonic propagation medium 26 in sol or gel state is filled between the contact surface 27 and the ultrasonic transducer 24, and a boundary between the contact surface 27 and the water or the medium 26 is covered with a cover 28 such as rubber. |
