国际光学工程学会
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作者:Lei Li , Liren Zhu ...
来源:[J].Journal of Biomedical Optics(IF 2.881), 2017, Vol.22 (7), pp.076017-076017SPIE
摘要:Based on the photoacoustic (PA) effect, PA tomography directly measures specific optical absorption, i.e., absorbed optical energy per unit volume. We recently developed a full-ring ultrasonic transducer array-based photoacoustic computed tomography (PACT) system for small-a...
作者:Lei Li , Wan Min ...
来源:[J].Optical Engineering(IF 0.88), 2016, Vol.55 (5), pp.053106-053106SPIE
摘要:Terahertz computed tomography makes use of the penetrability of terahertz radiation and obtains three-dimensional (3-D) object projection data. Continuous-wave terahertz digital holographic tomography with a pyroelectric array detector is presented. Compared with scanning teraher...
作者:Lei Li , Mark A. Anastasio
来源:[J].Journal of Biomedical Optics(IF 2.881), 2017, Vol.22 (4), pp.041018-041018SPIE
摘要:Photoacoustic computed tomography (PACT) is an emerging computed imaging modality that exploits optical contrast and ultrasonic detection principles to form images of the absorbed optical energy density within tissue. If the object possesses spatially variant acoustic proper...
作者:Lei Li , Liren Zhu ...
来源:[J].Journal of Biomedical Optics(IF 2.881), 2017, Vol.22 (4), pp.041017-041017SPIE
摘要:We have enhanced photoacoustic computed tomography with dry acoustic coupling that eliminates water immersion anxiety and wrinkling of the animal and facilitates incorporating complementary modalities and procedures. The dry acoustic coupler is made of a tubular elastic membrane ...
作者:Lei Li , Konstantin Maslov ...
来源:[J].Journal of Biomedical Optics(IF 2.881), 2017, Vol.22 (4), pp.041003-041003SPIE
摘要:While lasers have been commonly used as illumination sources in photoacoustic (PA) imaging, their high purchase and maintenance costs, as well as their bulkiness, have hindered the rapid clinical dissemination of PA imaging. With this in mind, we explore an alternative illum...
作者:Lei Li , Junjie Yao ...
来源:[J].Journal of Biomedical Optics(IF 2.881), 2017, Vol.22 (4), pp.041002-041002SPIE
摘要:Optical-resolution photoacoustic microscopy (OR-PAM) offers label-free in vivo imaging with high spatial resolution by acoustically detecting optical absorption contrasts via the photoacoustic effect. We developed a compact handheld OR-PAM probe for fast photoacoustic imaging. Di...
作者:Lei Li , Liren Zhu
来源:[J].Journal of Biomedical Optics(IF 2.881), 2018, Vol.23 (3), pp.036007-036007SPIE
摘要:Ultraviolet photoacoustic microscopy (UV-PAM) is a promising intraoperative tool for surgical margin assessment (SMA), one that can provide label-free histology-like images with high resolution. In this study, using a microlens array and a one-dimensional (1-D) array ultraso...
作者:Lei Li , Junjie Yao ...
来源:[J].Journal of Biomedical Optics(IF 2.881), 2018, Vol.23 (7), pp.076001-076001SPIE
摘要:Optical-resolution photoacoustic microscopy (OR-PAM) has demonstrated fast, label-free volumetric imaging of optical-absorption contrast within the quasiballistic regime of photon scattering. However, the limited numerical aperture of the ultrasonic transducer restricts the detec...
作者:Sheng Rong , Yannanqi Li , Lei Li
来源:[J].Optical Engineering(IF 0.88), 2018, Vol.57 (8), pp.087102-087102SPIE
摘要:We propose an optical switch with a circular tunable aperture based on electrowetting effect. The device is composed of two immiscible liquids. One liquid is dye-doped and conductive, while the other is transparent and insulating. The dye-doped water droplet is placed in the...
作者:Lei Li , Kaiyuan Xu ...
来源:[J].Optical Engineering(IF 0.88), 2018, Vol.57 (10), pp.104104-104104SPIE
摘要:Phase measuring deflectometry (PMD) with structured light projection and phase-shifting technique is a highly accurate optical surface measuring method based on the law of reflection. Generally, for surface shape measurement of transparent planar elements, PMD suffers from parasi...

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