| 摘要 |
PROBLEM TO BE SOLVED: To suppress variation in contrast of generated image data in a subject information acquisition apparatus that receives an acoustic wave while scanning a probe.SOLUTION: A subject information acquisition apparatus comprises: a receiving element for receiving an acoustic wave generated upon a subject being irradiated with light from a light source, to output an electric signal; an amplifying unit for amplifying the electric signal; a scanning unit for moving the relative positions between the receiving element and the subject; a control unit for determining a gain of the amplifying unit according to the time the receiving element receives the acoustic wave; and a processing unit for acquiring characteristics information of the subject using the electric signal. The control unit determines the gain of the amplifying unit according to a positional relation between the receiving element and the subject.SELECTED DRAWING: Figure 1 |
