Experimental evaluation of photoacoustic coded excitation using unipolar golay codes

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Martin P MienkinaGeorg Schmitz

Abstract

Q-switched Nd:YAG lasers are commonly used as light sources for photoacoustic imaging. However, laser diodes are attractive as an alternative to Nd:YAG lasers because they are less expensive and more compact. Although laser diodes deliver about three orders of magnitude less light pulse energy than Nd:YAG lasers (tens of microjoules compared with tens of millijoules), their pulse repetition frequency (PRF) is four to five orders of magnitude higher (up to 1 MHz compared with tens of hertz); this enables the use of averaging to improve SNR without compromising the image acquisition rate. In photoacoustic imaging, the PRF is limited by the maximum acoustic time-of-flight. This limit can be overcome by using coded excitation schemes in which the coding eliminates ambiguities between echoes induced by subsequent pulses. To evaluate the benefits of photoacoustic coded excitation (PACE), the performance of unipolar Golay codes is investigated analytically and validated experimentally. PACE imaging of a copper slab using laser diodes at a PRF of 1 MHz and a modified clinical ultrasound scanner is successfully demonstrated. Considering laser safety regulations and taking into account a comparison between a laser diode system and Nd:YAG...Continue Reading

References

Apr 2, 2005·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Richard Y Chiao, Xiaohui Hao
Apr 13, 2005·IEEE Transactions on Medical Imaging·Joël J NiederhauserMartin Frenz
May 25, 2006·Lasers in Medical Science·Roy G M KolkmanTon G van Leeuwen
Nov 14, 2006·Optics Letters·Thomas J Allen, Paul C Beard
Sep 18, 2007·Journal of Biomedical Optics·Gwangseong KimShai Ashkenazi
Nov 21, 2007·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Claudia LeavensMichael D Sherar
Jan 1, 2008·Journal of Biomedical Optics·Kwang Hyun Song, Lihong V Wang
Jul 8, 2008·Journal of Biomedical Optics·Jignesh ShahStanislav Y Emelianov
Nov 22, 2008·Journal of Biomedical Optics·Roy G M KolkmanTon G van Leeuwen
Apr 29, 2009·Optics Express·Adi SheinfeldAvishay Eyal
May 2, 2009·Journal of Biomedical Optics·Sergey A ErmilovAlexander A Oraevsky
May 28, 2007·Optics Express·Srivalleesha MallidiStanislav Emelianov
Aug 18, 2009·Optics Letters·Sheng-Wen HuangMatthew O'Donnell

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Citations

Nov 5, 2013·The Review of Scientific Instruments·Sergey A TelenkovAndreas Mandelis
Sep 8, 2011·The Journal of the Acoustical Society of America·Bahman Lashkari, Andreas Mandelis
Jul 26, 2016·Biomedical Optics Express·Thomas J Allen, Paul C Beard
May 18, 2012·Ultrasonics·István A VeresBrian Culshaw
Jun 1, 2016·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Julio Isla, Frederic Celga
Feb 7, 2017·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Julio Isla, Frederic Cegla
Jun 27, 2019·Proceedings. Mathematical, Physical, and Engineering Sciences·Julio A Isla, Frederic B Cegla
May 11, 2012·Nanotechnology·Benjamin S GutrathUlrich Simon
Jul 20, 2021·Ultrasonics·Erwin J AllesAdrien E Desjardins
Nov 14, 2020·Optics Express·Thomas J AllenPaul C Beard

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