Abstract
We present differential-absorption photoacoustic imaging, which detects the difference between transient and ground-state absorption, for contrast enhancement based on suppressing undesired objects. Two tubes were imaged. One contains a Pt(II) octaethylporphine (PtOEP) dye solution and serves as an object of interest, while the other contains an IR-783 (from Sigma-Aldrich) dye solution and serves as an object to suppress. Although the IR-783 tube dominates the conventional photoacoustic image, it is suppressed by 43 dB and consequently significantly overwhelmed by the PtOEP tube in the differential-absorption photoacoustic image. Imaging depth in this mode is also discussed.
Original language | English (US) |
---|---|
Pages (from-to) | 2393-2395 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 34 |
Issue number | 16 |
DOIs | |
State | Published - Aug 15 2009 |