| 摘要 |
The present invention relates to a subject information acquisition apparatus for increasing intensity of photoacoustic signals and improving SNR without increasing scale of the circuit board of the processing apparatus and without increasing the output of the light source. The irradiation position of the illumination light is changed while the substantial total light quantity to the subject is maintained and the light quantity in the irradiated area does not exceed the maximum permissible exposure of skin. The processing apparatus determines the irradiation position and the receiving aperture of the probe and drives the switching apparatus. |
