Optoacoustic imaging with synthetic aperture focusing and coherence weighting.
作者： C-K Liao , M-L Li , P-C Li , None
DOI: 10.1364/OL.29.002506
关键词: Coherence (physics) 、 Optics 、 Imaging phantom 、 Materials science 、 Point spread function 、 Aperture synthesis 、 Laser beam quality 、 Transducer 、 Image quality 、 Laser
摘要: Optoacoustic imaging takes advantage of high optical contrast and low acoustic scattering has found several biomedical applications. In the common backward mode a laser beam illuminates image object, an transducer located on same side as detects optoacoustic signal produced by thermoelastic effects. A cross-sectional is formed laterally scanning transducer. Although width generally narrow to provide good lateral resolution, strong in tissue broadens illumination pattern thus degrades resolution. To solve this problem, combination synthetic aperture focusing technique with coherence weighting proposed. This method synthesizes large summing properly delayed signals received at different positions. The quality further improved using index. phantom comprising hair threads 1% milk solution was imaged system. results show that proposed resolution 400-800% signal-to-noise ratio 7-23 dB over conventional techniques.
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Joel J. Niederhauser, Michael Jaeger, Martin Frenz, Comparision of laser-induced and classical ultasound Biomedical optics. ,vol. 4960, pp. 118- 123 ,(2003) , 10.1117/12.483509
Rinat O. Esenaliev, Irina V. Larina, Kirill V. Larin, Donald J. Deyo, Massoud Motamedi, Donald S. Prough, Optoacoustic technique for noninvasive monitoring of blood oxygenation: a feasibility study. Applied Optics. ,vol. 41, pp. 4722- 4731 ,(2002) , 10.1364/AO.41.004722
John A. Viator, Lars O. Svaasand, Guillermo Aguilar, Bernard Choi, J. Stuart Nelson, Photoacoustic measurement of epidermal melanin Biomedical optics. ,vol. 4960, pp. 14- 20 ,(2003) , 10.1117/12.477648
Srirang Manohar, Alexei Kharine, Johan G. van Hespen, Wiendelt Steenbergen, Frits F. M. de Mul, Ton G. J. M. van Leeuwen, Photoacoustic imaging of inhomogeneities embedded in breast tissue phantoms Biomedical Optoacoustics IV. ,vol. 4960, pp. 64- 75 ,(2003) , 10.1117/12.477778
Xueding Wang, Yongjiang Pang, Geng Ku, Xueyi Xie, George Stoica, Lihong V Wang, Noninvasive laser-induced photoacoustic tomography for structural and functional in vivo imaging of the brain Nature Biotechnology. ,vol. 21, pp. 803- 806 ,(2003) , 10.1038/NBT839
Meng-Lin Li, Wei-Jung Guan, Pai-Chi Li, Improved synthetic aperture focusing technique with applications in high-frequency ultrasound imaging IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control. ,vol. 51, pp. 63- 70 ,(2004) , 10.1109/TUFFC.2004.1268468
Christoph G. A. Hoelen, Frits F. M. de Mul, Image reconstruction for photoacoustic scanning of tissue structures. Applied Optics. ,vol. 39, pp. 5872- 5883 ,(2000) , 10.1364/AO.39.005872
R.O. Esenaliev, A.A. Karabutov, A.A. Oraevsky, Sensitivity of laser opto-acoustic imaging in detection of small deeply embedded tumors IEEE Journal of Selected Topics in Quantum Electronics. ,vol. 5, pp. 981- 988 ,(1999) , 10.1109/2944.796320
Alexander A. Karabutov, Elena V. Savateeva, Natalia B. Podymova, Alexander A. Oraevsky, Backward mode detection of laser-induced wide-band ultrasonic transients with optoacoustic transducer Journal of Applied Physics. ,vol. 87, pp. 2003- 2014 ,(2000) , 10.1063/1.372127
Pai-Chi Li, Meng-Lin Li, Adaptive imaging using the generalized coherence factor IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control. ,vol. 50, pp. 128- 141 ,(2003) , 10.1109/TUFFC.2003.1182117