An ultrasonic diagnostic apparatus and method are disclosed for enabling identification of a type of reference deformable body. The ultrasonic diagnostic apparatus includes an ultrasonic probe to which the reference deformable body is attached, a tomographic image constructing unit, and a display unit. The ultrasonic diagnostic apparatus further includes a storing unit configured to store the relationship between the ID given to the reference deformable body and a type of the reference deformable body, and a type identifying unit configured to specify the type of the reference deformable body corresponding to the inputted ID. A tomographic image can then be constructed based on the type of reference deformable body specified.
