1. Articles from Roomasa Channa

    1-5 of 5
    1. Image Artifacts In Optical Coherence Tomography Angiography Among Patients With Multiple Sclerosis

      Image Artifacts In Optical Coherence Tomography Angiography Among Patients With Multiple Sclerosis

      Purpose : To evaluate artifacts in OCT-A images of multiple sclerosis (MS) patients and healthy controls. Materials and Methods : This was a prospective cross-sectional study conducted at the Department of Neurology and the Wilmer Eye Institute at Johns Hopkins Hospital. Subjects included patients with an established diagnosis of MS and healthy volunteers. OCT-A was performed using Spectralis® OCT-A prototype, OCT2 (Heidelberg, Germany). The type and frequency of artifacts, the clinical factors associated with them, and their impact on vessel density measurements were assessed. Results : Overall, 385 images from 102 participants were analyzed. The majority of images (97.1%) had some degree ...

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    2. Detection of Age-Related Macular Degeneration by Portable Optical Coherence Tomography Operated by Nonexpert Personnel: Potential Use for Screenings

      Detection of Age-Related Macular Degeneration by Portable Optical Coherence Tomography Operated by Nonexpert Personnel: Potential Use for Screenings

      Purpose: The purpose of this study is to determine the sensitivity and specificity of detecting age-related macular degeneration (AMD) using portable optical coherence tomography (OCT) operated by nonexpert photographers on undilated patients. Methods: In this case-control study, 92 individuals were recruited from the glaucoma and retina clinics at the Wilmer Eye Institute (Johns Hopkins University, Baltimore, MD). Using the portable iVue (Optovue, Inc, Fremont, CA) spectral-domain OCT (SD-OCT), 2 nonexpert photographers acquired retina map scans on undilated eyes of all participants. In total, 33 AMD eyes and 105 control eyes were evaluated and graded by ophthalmologists masked to the diagnoses ...

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    3. Comparison of Time Domain and Spectral Domain Optical Coherence Tomography in Measurement of Macular Thickness in Macular Edema Secondary to Diabetic Retinopathy and Retinal Vein Occlusion

      Comparison of Time Domain and Spectral Domain Optical Coherence Tomography in Measurement of Macular Thickness in Macular Edema Secondary to Diabetic Retinopathy and Retinal Vein Occlusion

      Purpose. To evaluate macular thickness, agreement, and intraclass repeatability in three optical coherence tomography (OCT) devices: the time domain (TD) Stratus OCT and two spectral domain (SD) OCTs, Spectralis and Cirrus SD-OCT, in eyes with macular edema secondary to diabetic retinopathy (DR) and retinal vein occlusion (VO). Methods. In a prospective observational study at a university-based retina practice, retinal thickness tomography was performed simultaneously for fifty-eight patients (91 eyes) with DR and VO employing a time domain and two spectral domain OCTs. Agreement in macular measurements was assessed by constructing Bland-Altman plots. Intraclass repeatability was assessed by intraclass correlation coefficients ...

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    4. Sclerochoroidal Calcifications Imaged Using Enhanced Depth Imaging Optical Coherence Tomography

      Sclerochoroidal Calcifications Imaged Using Enhanced Depth Imaging Optical Coherence Tomography

      Purpose: To report a case of sclerochoroidal calcifications and describe the appearance of these lesions using optical coherence tomography with enhanced depth imaging (EDI-OCT) technology. Design: Case Report Methods: An 85-year-old patient who presented with bilateral retinal lesions suspected to be metastases was evaluated with slit-lamp biomicroscopy, funduscopy, fluorescein angiography, B-scan ultrasonography (U/S), and EDI-OCT. Results: B-scan U/S demonstrated echo-dense consolidations in the choroid bilaterally with acoustic shadowing consistent with sclerochoroidal calcifications. EDI-OCT revealed hyper-reflective lesions with decreased reflectivity posterior to the lesion. Conclusions: Sclerochoroidal calcifications should be included in the differential of choroidal masses, given their unique ...

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    5. Characterization of macular lesions in punctate inner choroidopathy with spectral domain optical coherence tomography

      Characterization of macular lesions in punctate inner choroidopathy with spectral domain optical coherence tomography

      Abstract Purpose  Punctate inner choroidopathy (PIC) is an ocular inflammatory disease. Spectral domain optical coherence tomography (SD-OCT) allows detailed visualization of retinal and choroidal structures. We aimed to describe the retinal changes on SD-OCT associated with PIC lesions localized in the macula. Methods  Retrospective case series: PIC lesions not associated with choroidal neovascularization (CNV) and captured by macular SD-OCT scans were identified and characterized. Results  Twenty-seven PIC lesions from seven patients (eight eyes) were identified and classified into four categories according to disease activity and temporal changes. Among clinically inactive patients, two main patterns were noted on OCT: (1) retinal ...

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    1-5 of 5
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    1. (5 articles) Johns Hopkins University
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    Characterization of macular lesions in punctate inner choroidopathy with spectral domain optical coherence tomography Sclerochoroidal Calcifications Imaged Using Enhanced Depth Imaging Optical Coherence Tomography Comparison of Time Domain and Spectral Domain Optical Coherence Tomography in Measurement of Macular Thickness in Macular Edema Secondary to Diabetic Retinopathy and Retinal Vein Occlusion Detection of Age-Related Macular Degeneration by Portable Optical Coherence Tomography Operated by Nonexpert Personnel: Potential Use for Screenings Image Artifacts In Optical Coherence Tomography Angiography Among Patients With Multiple Sclerosis Very Late Stent Thrombosis 89 Months after Implantation of Durable Polymer Everolimus-Eluting Stent due to Late Acquired Stent Malapposition and Uncovered Struts Observed by Optical Coherence Tomography, Near-Infrared Spectroscopy and Coronary Angioscopy Optical Coherence Tomography Angiography Analysis of Retinal and Choroidal Vascular Networks during Acute, Relapsing, and Quiescent Stages of Macular Toxoplasma Retinochoroiditis The feasibility and utility of optical coherence tomography directed histopathology for surgical margin assessment of canine mast cell tumors Woven Coronary Artery Anomaly: Optical Coherence Tomography Versus Intravascular Ultrasound Optical microangiography reveals temporal and depth-resolved hemodynamic change in mouse barrel cortex during whisker stimulation Optical coherence tomography for fast bedside imaging, assessment and monitoring of autoimmune inflammatory skin diseases? Monitoring fatigue damage in different CAD/CAM materials: A new approach with optical coherence tomography.