Scanning acoustic-photoacoustic microscopy using axicon transducers.
A dual mode scanning acoustic microscope is investigated, yielding simultaneously images with optical and acoustical contrast. Short laser pulses are used to excite acoustic waves in a sample for the photoacoustic imaging mode. At the same time the pulses irradiate a conical target generating limited diffraction acoustic waves (X-waves) for large depth of field ultrasound imaging. For photoacoustic as well as for ultrasound imaging a focusing, ring shaped detector is applied. First phantom experiments demonstrate the possibility to acquire data for both imaging modes in a single scan, by separating images due to their different time of flight.
K
K
Passler
R
R
Nuster
S
S
Gratt
P
P
Burgholzer
T
T
Berer
G
G
Paltauf
Nat Biotechnol. 2006 Jul;24(7):848-51
16823374
IEEE Trans Ultrason Ferroelectr Freq Control. 1992;39(3):441-6
18267654
IEEE Trans Med Imaging. 2005 Apr;24(4):436-40
15822801
IEEE Trans Ultrason Ferroelectr Freq Control. 1992;39(1):19-31
18263114
Opt Express. 2009 Nov 23;17(24):22041-6
19997449
J Biomed Opt. 2004 Nov-Dec;9(6):1327-35
15568955
J Biomed Opt. 2010 Mar-Apr;15(2):021306
20459228