多参量光声成像及其在生物医学领域的应用

殷杰; 陶超; 刘晓峻

doi:10.7498/aps.64.098102

摘要

光声成像兼具声学成像和光学成像两者的优点, 因而成为近十年来发展最迅速的生物医学成像技术之一. 本文介绍了光声成像的特点及其相对于广泛应用的光学成像技术和声学成像技术的优点; 其次, 解释了光声成像的成像原理, 在此基础上介绍了光声断层成像和光声显微镜这两种典型的光声成像方案, 并介绍了它们的技术特点; 然后, 介绍了光声成像对生物组织的生化特性、组织力学特性、血液流速分布、温度分布参数、微结构特性等多信息参量的提取能力, 及其在生物系统的结构成像、功能成像、代谢成像、分子成像、基因成像等多领域的应用; 最后, 展望了光声成像在生物医学领域的应用潜力并讨论了其局限性.

关键词:

Abstract

Photoacoustic imaging is a hybrid imaging technique based on the photoacoustic effect. As a non-invasive and non-ionizing modality, photoacoustic imaging takes the both merits of the conventional acoustic imaging and optical imaging. Firstly, the contrast of photoacoustic imaging primarily depends on the optical absorption. The unique optical spectra of atoms and molecules makes optical methods to be a widely used modality to probe the molecular and chemical information of biological tissue. Therefore, photoacoustic imaging has its inherent advantage in high-contrast functional and physiological imaging of biological tissue, as well as the optical imaging method. Secondly, photoacoustic imaging has the high spatial resolution in deep tissue in comparison with the pure optical imaging method. Since the strongly optical scattering in biological tissue, pure optical imaging method is difficult to obtain the high-resolution image in the tissue deeper than ～1 mm. Whereas, acoustic wave suffers much less from scattering than optical wave, the acoustic scattering coefficient is about 2-3 orders of magnitude less than the optical scattering coefficient. Photoacoustic imaging can achieve a fine resolution in deep tissue, which equivalent to 1/200 of the imaging depth. Thirdly, non-ionizing radiation used for photoacoustic imaging is much safer than X-ray. Moreover, the low-temperature rises make photoacoustic imaging be safely used in live tissue. A laser-induced temperature rise of 1 mK yields an initial pressure of ～800 Pa in soft tissue. Such a sound pressure level has reached the sensitivities of typical ultrasonic transducers. Fourthly, photoacoustic imaging has the ability of extracting multiple contrasts, including biochemical parameter, biomechanical parameter, blood velocity distribution, tissue temperature, and microstructure information. Photoacoustic imaging can capture more specific and reliable information about the tissue structure, function, metabolism, molecule, and gene. As a result, photoacoustic imaging has become one of the fastest growing biomedical imaging techniques in the past decade.#br#In this review, we will explain photoacoustic effect and the principle of photoacoustic imaging. Then, we introduce the two classical photoacoustic imaging schemes, including photoacoustic tomography and photoacoustic microscopy. Their main specifications, such as resolution, are also preflents. We review the ability of photoacoustic imaging in extracting multiple contrasts and discuss their biomedicine applications. In addition, we also introduce the remarkable breakthroughs in super-resolution photoacoustic imaging. Finally, we look the further development and the limitations of photoacoustic imaging.

Keywords:

作者及机构信息

1.
南京大学物理学院声学研究所, 近代声学教育部重点实验室, 南京 210093

基金项目: 国家重点基础研究发展计划(批准号: 2012CB921504)、国家自然科学基金(批准号: 11422439, 11274171, 11274167)和教育部博士点基金(20120091110001)资助的课题.

Authors and contacts

1.
MOE Key Laboratory of Modern Acoustics, Institute of Acoustics, Physical School, Nanjing University, Nanjing 210093, China

Funds: Project supported by the National Basic Research Program of China (Grant No. 2012CB921504), the National Natural Science Foundation of China (Grant Nos. 11422439, 11274171, 11274167), and SRFDP (Grant No. 20120091110001).

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施引文献

[1]	Wang L V, Hu S 2012 Science 335 1458
[2]	Zeng Z P, Xie W M, Zhang J Y, Li L, Chen S Q, Li Z F, Li H 2012 Acta Phys. Sin. 61 097801
[3]	Chen B Z, Yi H, Yang J G, Chi Z H, Rong J, Hu B, Jiang H B 2014 Acta Phys. Sin. 63 084204
[4]	Wang L V 2009 Nat. Photonics 3 503
[5]	Li C, Wang L V 2009 Phys. Med. Biol. 54 R59
[6]	Lou C, Yang S, Ji Z, Chen Q, Xing D 2012 Phys. Rev. Lett. 109 218101
[7]	Culver J P, Ntziachristos V, Holboke M J, Yodh A G 2001 Opt. Lett. 26 701
[8]	Savage N 2013 Nature 502 S90
[9]	Xu M, Wang L V 2006 Rev. Sci. Instrum. 77 041101
[10]	Calasso I G, Craig W, Diebold G J 2001 Phys. Rev. Lett. 86 3550
[11]	Diebold G J, Khan M I, Park S M 1990 Science 250 101
[12]	Wang X D, Pang Y J, Ku G, Xie X Y, Stoica G, Wang L V 2003 Nat. Biotechnol. 21 803
[13]	Xu M H, Wang L V 2005 Phys. Rev. E 71 016706
[14]	Haltmeier M, Scherzer O, Burgholzer P, Nuster R, Paltauf G 2007 Math. Mod. Meth. Appl. S 17 635
[15]	Köstli K P, Beard P C 2003 Appl. Optics 42 1899
[16]	Wu D, Tao C, Liu X J 2013 Opt. Express 21 18061
[17]	Wu D, Tao C, Liu X J 2011 J. Appl. Phys. 109 084702
[18]	Zhang H F, Maslov K, Stoica G, Wang L V 2006 Nat. Biotechnol. 24 848
[19]	Yang J M, Favazza C, Chen R M, Yao J J, Cai X, Maslov K, Zhou Q F, Shung K K, Wang L V 2012 Nat. Med. 18 1297
[20]	Yao D K, Maslov K, Shung K K, Zhou Q, Wang L V 2010 Opt. Lett. 35 4139
[21]	Hu S, Maslov K, Wang L V 2011 Opt. Lett. 36 1134
[22]	Xu Z, Zhu Q, Wang L V 2011 J. Biomed. Opt. 16 066020
[23]	Xi L, Grobmyer S R, Wu L, Chen R M, Zhou G Y, Gutwein L G, Sun J J, Liao W J, Zhou Q F, Xie H K, Jiang H B 2012 Opt. Express 20 8726
[24]	Wu N, Ye S H, Ren Q S, Li C H 2014 Opt. Lett. 39 2451
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[27]	Ku G, Wang X D, Xie X Y, Stoica G, Wang L V 2005 Appl. Optics 44 770
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[29]	Gao G D, Yang S H, Xing D 2011 Opt. Lett. 36 3341
[30]	Zhao Y, Yang S H, Chen C G, Xing D 2014 Opt. Lett. 39 2565
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[35]	Song W, Liu W Z, Zhang H F 2013 Appl. Phys. Lett. 102 203501
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[41]	Wang S H, Tao C, Wang X D, Liu X J 2013 Appl. Phys. Lett. 102 114102
[42]	Xu G, Meng Z X, Lin J D, Yuan J, Carson P L, Joshi B, Wang X D 2014 Radiology 271 248
[43]	Rao B, Maslov K, Danielli A, Chen R M, Shung K K, Zhou Q F, Wang L V 2011 Opt. Lett. 36 1137
[44]	Nedosekin D A, Galanzha E I, Dervishi E, Biris A S, Zharov V P 2014 Small 10135
[45]	Yao J Y, Wang L D, Li C Y, Zhang C, Wang L V 2014 Phys. Rev. Lett. 112 014302
[46]	Jin X, Wang L V 2006 Phys. Med. Biol. 51 6437
[47]	Jose J, Willemink R G H, Steenbergen W, Slump C H, Leeuwen T G, Manohar S 2012 Med. Phys. 39 7262
[48]	Yoon C H, Kang J, Han S H, Yoo Y M, Song T K, Chang J H 2012 Opt. Express 20 3082
[49]	Huang C, Wang K, Nie L M, Wang L V 2013 IEEE T. Med. Imaging 32 1097
[50]	Zhang C, Wang Y Y 2008 Phys. Med. Biol. 53 4971
[51]	Wu D, Wang X D, Tao C, Liu X J 2011 Appl. Phys. Lett. 99 244102

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