1. Articles from Zhongping Chen

    1-3 of 3
    1. Optical coherence elastography (OCE) method under acoustic radiation force excitation using OCT doppler variance methods and OCT correlation-based methods

      Optical coherence elastography (OCE) method under acoustic radiation force excitation using OCT doppler variance methods and OCT correlation-based methods

      A system for imaging and quantifying shear wave and shear modulus under orthogonal acoustic radiation force (ARF) excitation using the OCT Doppler variance apparatus. The ARF perpendicular or with at least a perpendicular component to the OCT beam is produced by a remote ultrasonic transducer. The OCT Doppler variance apparatus, which is sensitive to the transverse vibration, is used to measure the ARF induced vibration. For analysis of the shear modulus, the Doppler variance apparatus is utilized to visualize shear wave propagation. The propagation velocity of the shear wave is measured and then used to quantitatively map the shear modulus.

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    2. Automatic three-dimensional segmentation method for OCT and doppler OCT angiography

      Automatic three-dimensional segmentation method for OCT and doppler OCT angiography

      A three-dimensional (three dimensional) segmentation method with intensity-based Doppler variance (IBDV) based on swept-source OCT. The automatic three dimensional segmentation method is used to obtain seven surfaces of intra-retinal layers. The microvascular network of the retina, which is acquired by the IBDV method, can be divided into six layers. The microvascular network of the six individual layers are visualized, and the morphology and contrast images can be improved by using the segmentation method. This method has potential for earlier diagnosis and precise monitoring in retinal vascular diseases. Each tomographic image is composed of eight repeat scans at the same position ...

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    3. Integrated multimodality intravascular imaging system that combines optical coherence tomography, ultrasound imaging, and acoustic radiation force optical coherence elastography

      Integrated multimodality intravascular imaging system that combines optical coherence tomography, ultrasound imaging, and acoustic radiation force optical coherence elastography

      An integrated intraluminal imaging system includes an optical coherence tomography interferometer (OCT), an ultrasound subsystem (US) and a phase resolved acoustic radiation force optical coherence elastography subsystem (PR-RAF-OCE). The steps include performing OCT to generate a returned optical signal, performing US imaging to generate a returned ultrasound signal, performing PRARF-OCE to generate a returned PR-ARF-OCE signal by generating a amplitude modulated ultrasound beam or chirped amplitude modulated ultrasound beam to frequency sweep the acoustic radiation force, measuring the ARF induced tissue displacement using phase resolved OCT, and the frequency dependence of the PR-ARF-OCE signal, processing the returned optical signal, the ...

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    1-3 of 3
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  2. Topics in the News

    1. (3 articles) Zhongping Chen
    2. (2 articles) UC Irvine
    3. (1 articles) UC Riverside
    4. (1 articles) Wenzhou Medical College
    5. (1 articles) Wenjuan Qi
    6. (1 articles) Jiang Zhu
    7. (1 articles) Academic Medical Center at the University of Amsterdam
    8. (1 articles) Jichi Medical University
    9. (1 articles) University of Milan
    10. (1 articles) Bern University Hospital
    11. (1 articles) Capital Medical University
    12. (1 articles) Nanjing University of Science and Technology
    13. (1 articles) Martin S. Zinkernagel
    14. (1 articles) Junya Ako
    15. (1 articles) Frank D. Verbraak
    16. (1 articles) Giovanni Staurenghi
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    Integrated multimodality intravascular imaging system that combines optical coherence tomography, ultrasound imaging, and acoustic radiation force optical coherence elastography Automatic three-dimensional segmentation method for OCT and doppler OCT angiography Optical coherence elastography (OCE) method under acoustic radiation force excitation using OCT doppler variance methods and OCT correlation-based methods Correlation between optical coherence tomography, multifocal electroretinogram findings and visual acuity in diabetic macular edema Ciliary body length revisited by anterior segment optical coherence tomography: implications for safe access to the pars plana for intravitreal injections Evaluation of retinal vascular structure after epiretinal membrane surgery by optical coherence tomography angiography Bivalirudin vs. Heparin on Radial Artery Thrombosis during Transradial Coronary Intervention: An Optical Coherence Tomography Study Superficial Calcification With Rotund Shape Is Associated With Carotid Plaque Rupture: An Optical Coherence Tomography Study Longitudinal retinal layer changes in preclinical Alzheimer’s disease Clinical expert consensus document on rotational atherectomy from the Japanese association of cardiovascular intervention and therapeutics Optical coherence tomography features of choroidal neovascularization and their correlation with age, gender and underlying disease Carotid Disease and Retinal Optical Coherence Tomography Angiography Parameters in Type 2 Diabetes: The Fremantle Diabetes Study Phase II