期刊名称：International Journal of Signal Processing, Image Processing and Pattern Recognition
印刷版ISSN：2005-4254
出版年度：2015
卷号：8
期号：4
页码：269-278
DOI：10.14257/ijsip.2015.8.4.24
出版社：SERSC
摘要：As a new nondestructive biophotonic technology, taking the ultrasonic wave as the media, opto-acoustic tomography is a kind of imaging method based on the differences of optical absorption within the biological organization. With an analysis on the loss of the high-frequency information containing image details resulted from the decay of the evanescent wave in the traditional acoustic lens in the current opto-acoustic tomography system, a study is conducted in this paper by using the lens with negative refractive index to make the evanescent wave participate in the imaging process, and break through the diffraction limit of the traditional acoustic lens, so as to greatly improve the resolution of image. Moreover, according to the characteristics of ultrasonic wave produced in opto-acoustic effect, the relevant theory of acoustic information system and three-dimensional acoustic imaging technology are supplemented and developed in the study. In addition, a set of comparative experiment is done on the imaging effect between the traditional lens and the lens designed in this paper, and the experiment shows that the imaging effect of opto-acoustic tomography within the biological organization got by the designed lens greatly beyond that of the traditional lens.
