1. Mohamed A. Ibrahim

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    1-11 of 11
    1. Mentioned In 11 Articles

    2. Dual-axis optical coherence tomography for deep tissue imaging

      Dual-axis optical coherence tomography for deep tissue imaging
      We have developed dual-axis optical coherence tomography (DA-OCT) which enables deep tissue imaging by using a novel off-axis illumination/detection configuration. DA-OCT offers a 100-fold speed increase compared with its predecessor, multispectral multiple-scattering low coherence interferometry (ms2/LCI), by using a new beam scanning mechanism based on a microelectro-mechanical system (MEMS) mirror. The data acquisition scheme was altered to take advantage of this scanning speed, producing tomographic images at a ...
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    3. In Vivo Demonstration of Homonymous Hemimacular Loss of Retinal Ganglion Cells Due to a Thalamic Lesion Using Optical Coherence Tomography

      In Vivo Demonstration of Homonymous Hemimacular Loss of Retinal Ganglion Cells Due to a Thalamic Lesion Using Optical Coherence Tomography
      ...ng Optical Coherence Tomography ONLINE FIRST Jiwon Oh, MD; Elias S. Sotirchos, MD; Shiv Saidha, MBBCh, MRCPI; Mohamed Ibrahim, MD; Yasir Sepah, MD; Quan Dong Nguyen, MD; Peter A. Calabresi, MD JAMA Neurol. 2013;():1-2. d...
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    4. 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 ...
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    5. 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 ...
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    6. Primary retinal pathology in multiple sclerosis as detected by optical coherence tomography

      Primary retinal pathology in multiple sclerosis as detected by optical coherence tomography
      Optical coherence tomography studies in multiple sclerosis have primarily focused on evaluation of the retinal nerve fibre layer. The aetiology of retinal changes in multiple sclerosis is thought to be secondary to optic nerve demyelination. The objective of this study was to use optical coherence tomography to determine if a subset of patients with multiple sclerosis exhibit primary retinal neuronopathy, in the absence of retrograde degeneration of the retinal nerve ...
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    7. Progressive changes from idiopathic macular telangiectasia seen with spectral domain optical coherence tomography

      Progressive changes from idiopathic macular telangiectasia seen with spectral domain optical coherence tomography
      Idiopathic macular telangiectasia causes bilateral gradual vision loss, usually with an onset between 40 and 60 years of age. Diagnosis is made by clinical examination and fluorescein angiography (FA), which demonstrates late frame leakage from incompetent retinal vessels temporal to the fovea. In addition, parafoveal pigmentary changes are visible, particularly temporal to the fovea, and optical coherence tomography (OCT) often demonstrates hyporeflective spaces within the retina.
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    8. Use of Spectral Domain-Optical Coherence Tomography To Visualize Photoreceptor Abnormalities in Cone-Rod Dystrophy 6

      Purpose: The purpose of this study was to describe the spectral domain-optical coherence tomography findings in a patient with cone-rod dystrophy 6. Methods: This is a case report of a 13-year-old girl who presented with progressive loss of vision. Fundus photography, a fluorescein angiogram, an electroretinogram, autofluorescence imaging, spectral domain-optical coherence tomography, and genetic testing were performed. Results: The patient's fundi showed mild granularity of the perifoveal retinal pigment ...
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  2. About Mohamed A. Ibrahim

    Mohamed A. Ibrahim

    Mohamed Ibrahim is from Retinal Imaging Research and Reading Center (RIRRC), Wilmer Eye Institute, Johns Hopkins University