Provided is a technique for facilitating maintaining an appropriate angle with respect to an object to be imaged when an operator holds the probe of an ultrasonic imaging apparatus and moves the probe. A probe comprising a contact surface having a shape along the outer periphery of a cross section of an object to be imaged and an ultrasonic transmission / reception surface for transmitting / receiving ultrasonic waves is fixed at a predetermined angle, and the ultrasonic transmission / reception surface is provided. A probe adapter 3 comprising: a fixing portion 32 that exposes 23 to the contact surface 33 side. [Selection] Figure 1【課題】オペレータが超音波撮像装置のプローブを把持してプローブを動かす際に、被撮像物に対してプローブを適切な角度に維持することを容易化する技術を提供する。【解決手段】被撮像物の横断面の外周に沿う形状の当接面３３と、超音波を送受する超音波送受面２３を備えたプローブ２を所定の角度で固定し、前記超音波送受面２３を前記当接面３３側に露出させる固定部３２と、を備えた、プローブアダプタ３。【選択図】 図１
