1. Tianshi Wang

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    1. Mentioned In 14 Articles

    2. Thermo-elastic optical coherence tomography

      Thermo-elastic optical coherence tomography
      The absorption of nanosecond laser pulses induces rapid thermo-elastic deformation in tissue. A sub-micrometer scale displacement occurs within a few microseconds after the pulse arrival. In this Letter, we investigate the laser-induced thermo-elastic deformation using a 1.5 MHz phase-sensitive optical coherence tomography (OCT) system. A displacement image can be reconstructed, which enables a new modality of phase-sensitive OCT, called thermo-elastic OCT. An analysis of the results shows that the ...
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    3. Heartbeat OCT and Motion-Free 3D In Vivo Coronary Artery Microscopy

      Heartbeat OCT and Motion-Free 3D In Vivo Coronary Artery Microscopy
      Intravascular optical coherence tomography (IV-OCT) has gained widespread use over the past few years, offering highly detailed images of coronary artery pathologies and interventions (1) . In contrast to the cross-sectional view, longitudinal sections and 3-dimensional (3D) renderings are affected by cardiac motion artifacts and undersampling, complicating interpretation and measurements (2) . We developed Heartbeat OCT, a new OCT method that achieves up to 4,000 frames/s imaging speed for isotropically ...
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    4. Heartbeat Optical Coherence Tomography (Thesis)

      Heartbeat Optical Coherence Tomography (Thesis)
      Coronary artery disease (CAD) is a manifestation of atherosclerosis, a systemic inflammatory disease of the arteries that causes the formation of plaques in the artery walls. Different plaques may give rise to different symptoms: a gradual narrowing (stenosis) of the vessel by growth of a fibrous or calcific plaque will cause chest pain (due to cardiac ischemia) upon exertion, a condition called stable CAD. Sudden onset of chest pain, or ...
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    5. Heartbeat OCT: in vivo intravascular megahertz-optical coherence tomography

      Heartbeat OCT: in vivo intravascular megahertz-optical coherence tomography
      Cardiac motion artifacts, non-uniform rotational distortion and undersampling affect the image quality and the diagnostic impact of intravascular optical coherence tomography (IV-OCT). In this study we demonstrate how these limitations of IV-OCT can be addressed by using an imaging system that we called Heartbeat OCT, combining a fast Fourier Domain Mode Locked laser, fast pullback, and a micromotor actuated catheter, designed to examine a coronary vessel in less than one ...
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    6. A Micromotor Catheter for Intravascular Optical Coherence Tomography

      A Micromotor Catheter for Intravascular Optical Coherence Tomography
      We have developed a new form of intravascular optical coherence tomography (IV-OCT) that allows the extremely fast acquisition of high-resolution images of the coronary arteries. This process leads to much better image quality by eliminating cardiac motion artefacts and undersampling. It relies on a catheter that incorporates a synchronous micromotor with a diameter of 1.0 mm and a rotational speed of up to 5600 revolutions per second, enabling an ...
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    7. Numerical analysis of astigmatism correction in gradient refractive index lens based optical coherence tomography catheters

      Numerical analysis of astigmatism correction in gradient refractive index lens based optical coherence tomography catheters
      ...tomography catheters Tianshi Wang, Antonius F. W. van der Steen, and Gijs van Soest »View Author Affiliations Tianshi Wang,^1,^* Antonius F. W. van der Steen,^1,^2 and Gijs van Soest^1 ^1Thorax Center, Erasmus University...
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    8. Handheld optical coherence tomography device for photodynamic therapy

      Handheld optical coherence tomography device for photodynamic therapy
      Photodynamic therapy (PDT) is a very effective treatment for port wine stains (PWS). To guide and assess PDT treatment, a handheld optical coherence tomography (OCT) probe was designed for real-time imaging of the PWS patient. The system uses a light source with a center wavelength of 1310 nm, -3 dB bandwidth of 90 nm and an optical power of 9 mW. The system also has a spatial resolution of 8 ...
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    9. Imaging port wine stains by fiber optical coherence tomography

      Imaging port wine stains by fiber optical coherence tomography
      We develop a fiber optical coherence tomography (OCT) system in the clinical utility of imaging port wine stains (PWS). We use our OCT system on 41 patients with PWS to document the difference between PWS skin and contralateral normal skin. The system, which operates at 4 frames/s with axial and transverse resolutions of 10 and 9 m, respectively, in the skin tissue, can clearly distinguish the dilated dermal blood ...
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    10. Optical coherence tomography for ultrahigh-resolution 3D imaging of cell development and real-time guiding for photodynamic therapy

      Optical coherence tomography is a new emerging technique for cross-sectional imaging with high spatial resolution of micrometer scale. It enables in vivo and non-invasive imaging with no need to contact the sample and is widely used in biological and clinic application. In this paper optical coherence tomography is demonstrated for both biological and clinic applications. For biological application, a white-light interference microscope is developed for ultrahigh-resolution full-field optical coherence tomography ...
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    11. 1-14 of 14
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  2. About Tianshi Wang

    Tianshi Wang

    Tianshi Wang acquired his B.S. degree and M.S. degree in Physics from Tsinghua University, Beijing, China. Since 2010, he has been working as a PhD student in department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, the Netherland. His research focuses on intravascular OCT, especially catheter development for intracoronary imaging.