| 摘要 |
<p>An adverse effect of position displacement during measurements in calculating oxygen saturation can be decreased with an apparatus having: an acoustic wave detector, for receiving acoustic waves inside a subject, and for converting the acoustic waves to signals; and a processing apparatus (10) for deriving biofunctional information using profiles of absorption coefficients derived from the signals, where the processing apparatus (10) includes: a first unit (109) for deriving, from signals corresponding to light of a first wavelength, first data showing a profile of a first absorption coefficient, and from signals corresponding to light of a second wavelength, second data showing a profile of a second absorption coefficient; and a second unit (106) for deriving the biofunctional information using the first and second data, where the second data has lower image spatial resolution than the first data.</p> |
