PROBLEM TO BE SOLVED: To solve such a problem that with a detector in which detection elements are placed in a spherical shape, a uniform resolution area is narrow.SOLUTION: An acoustic-wave acquisition apparatus of the present invention comprises a detector including a plurality of detection elements that receive acoustic waves from a subject, the receiving surfaces of at least some of the detection elements being at different angles. The apparatus further comprises a scanning unit configured to move at least one of the subject and the detector in order to change the relative position of the subject and a highest-resolution area determined depending on the placement of the detection elements.SELECTED DRAWING: Figure 3
