1. Articles from Yingna Liu

    1-4 of 4
    1. Diagnostic Capability of 3D Peripapillary Retinal Volume for Glaucoma Using Optical Coherence Tomography Customized Software

      Diagnostic Capability of 3D Peripapillary Retinal Volume for Glaucoma Using Optical Coherence Tomography Customized Software

      Précis: The diagnostic capability of peripapillary retinal volume is similar to peripapillary retinal nerve fiber layer thickness for diagnosing glaucoma, but with fewer artifacts. Purpose: To compare the diagnostic capability of three-dimensional (3D) peripapillary retinal volume (RV) versus two-dimensional (2D) peripapillary retinal nerve fiber layer (RNFL) thickness for open-angle glaucoma . Patients and Methods: A retrospective cross-sectional analysis was conducted. A total of 180 subjects [113 open-angle glaucomas (OAG), 67 normal participants] had spectral domain optical coherence tomography (OCT) volume scans and RNFL thickness measurements. Peripapillary RV values were calculated using a custom-designed program with 4 circumpapillary annuli (CA): CA1 ...

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    2. Diagnostic Capability of Peripapillary 3D Retinal Nerve Fiber Layer Volume for Glaucoma Using Optical Coherence Tomography Volume Scans

      Diagnostic Capability of Peripapillary 3D Retinal Nerve Fiber Layer Volume for Glaucoma Using Optical Coherence Tomography Volume Scans

      Purpose To determine the diagnostic capability of peripapillary 3-dimensional (3D) retinal nerve fiber layer (RNFL) volume measurements from spectral domain optical coherence tomography (OCT) volume scans for open angle glaucoma (OAG). Design Assessment of diagnostic accuracy. Methods Setting: Academic clinical setting. Study population : 180 patients (113 OAG and 67 normal subjects). Observation procedures : One eye per subject was included. Peripapillary 3D RNFL volumes were calculated for global, quadrant, and sector regions, using four different sized annuli. Peripapillary 2D RNFL thickness circle scans were also obtained. Main outcome measures : Area under the receiver operating characteristic curve (AUROC) values, sensitivity, specificity, positive ...

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    3. Old and New Methods of Glaucoma Diagnosis Using Spectral-Domain Optical Coherence Tomography: Testing Limitations of Older Retinal Nerve Fiber Layer Thickness Measurements and Diagnostic Potential of Newer Retinal Volume Measurements (Thesis)

      Old and New Methods of Glaucoma Diagnosis Using Spectral-Domain Optical Coherence Tomography: Testing Limitations of Older Retinal Nerve Fiber Layer Thickness Measurements and Diagnostic Potential of Newer Retinal Volume Measurements (Thesis)

      Purpose: Optical coherence tomography (OCT) retinal nerve fiber layer (RNFL) thickness measurements are a reproducible and quantitative diagnostic modality widely used for glaucoma evaluations, but a high rate of testing artifacts limits its clinical utility. In Part I of this thesis, we aimed to characterize artifact types and assess artifact rates in two-dimensional (2D) RNFL thickness measurements obtained by the Spectralis OCT machine (Heidelberg Engineering, Heidelberg, Germany), as well as to determine patient factors and eye conditions associated with a higher artifact prevalence. In Part II of this thesis, we aimed to compare a new parameter, peripapillary retinal volume (RV ...

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    4. Patient Characteristics Associated with Artifacts in Spectralis Optical Coherence Tomography Imaging of the Retinal Nerve Fiber Layer in Glaucoma

      Patient Characteristics Associated with Artifacts in Spectralis Optical Coherence Tomography Imaging of the Retinal Nerve Fiber Layer in Glaucoma

      Purpose To determine patient factors and eye conditions associated with artifacts in Spectralis optical coherence tomography (OCT) retinal nerve fiber layer (RNFL) scans. Design Retrospective cross-sectional study. Methods The prevalence of twelve artifact types were described in this review of 2313 eye scans from 1188 patients who underwent a complete eye exam with Spectralis OCT scanning during the period of September 2009 to July 2013. Generalized estimating equations model was utilized to analyze associations between increased artifact prevalence and 10 patient characteristics, which included age, sex, race, visual acuity, refractive error, astigmatism, cataract status, glaucoma staging, visual field reliability, and ...

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    1-4 of 4
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    Patient Characteristics Associated with Artifacts in Spectralis Optical Coherence Tomography Imaging of the Retinal Nerve Fiber Layer in Glaucoma Old and New Methods of Glaucoma Diagnosis Using Spectral-Domain Optical Coherence Tomography: Testing Limitations of Older Retinal Nerve Fiber Layer Thickness Measurements and Diagnostic Potential of Newer Retinal Volume Measurements (Thesis) Diagnostic Capability of Peripapillary 3D Retinal Nerve Fiber Layer Volume for Glaucoma Using Optical Coherence Tomography Volume Scans Diagnostic Capability of 3D Peripapillary Retinal Volume for Glaucoma Using Optical Coherence Tomography Customized Software The impact of blood pressure variability on coronary arterial lumen dimensions as assessed by optical coherence tomography in patients with ST-elevation myocardial infarction Clinical diversity in macular corneal dystrophy: an optical coherence tomography study Imaging Amblyopia: Insights from Optical Coherence Tomography (OCT) Three-Dimensional Optical Coherence Tomography Imaging for Glaucoma Associated with Boston Keratoprosthesis Type I and II Velocity range estimation for liquid flow based on optical micro-angiography Spectral optical coherence tomography findings in an adult patient with syphilitic bilateral posterior uveitis and unilateral punctate inner retinitis In-stent restenosis caused by calcified nodule 11 years after paclitaxel eluting stent implantation treated with drug-coated balloon following rotational atherectom Plaque erosion or coronary artery embolism? Findings from clinical presentation, optical coherence tomographic and histopathological analysis in a case with acute coronary syndrome