Results 51 to 60 of about 4,372 (233)

Choroidal Assessment in Patients with Type 2 Diabetes Mellitus and Non-Proliferative Diabetic Retinopathy by Swept-Source Ocular Coherence Tomography and Image Binarization

Medicina, 2022
Background and Objectives: The aim of this study was to evaluate choroidal structure and vascularity indices in patients with non-proliferative diabetic retinopathy (NPDR). Materials and Methods: Sixty-three eyes from sixty-three patients were evaluated:
Otilia Obadă, Anca Delia Pantalon, Gabriela Rusu-Zota, Anca Hăisan, Smaranda Ioana Lupuşoru, Dorin Chiseliţă   +5 more
doaj   +1 more source

Structural alterations of the choroid evaluated using enhanced depth imaging optical coherence tomography in patients with coronavirus disease [PDF]

, 2022
Purpose: To assess choroidal changes using enhanced depth imaging optical coherence tomography in coronavirus disease (COVID-19). Methods: Thirty-two patients with moderate COVID-19 and 34 healthy subjects were included in the study.
Aşıkgarip, Nazife, Hızmalı, Lokman, Kocamış, Özkan, Sezgin, Fikriye Milletli, Temel, Emine, Örnek, Kemal   +5 more
core   +1 more source

Ultrasonographic Assessment of Intrinsic Vascularity in Choroidal Nevus, Suspicious Choroidal Nevus, and Choroidal Melanoma

Ophthalmology Science
Purpose: To determine if intrinsic vascularity can be observed in B-scan ultrasound examinations of choroidal nevi (CN) and compare the intensity of the vascularity among CN, suspicious choroidal nevi (SN), and choroidal melanomas (CMs).
Buse Guneri Beser, MD, Tanya McClendon, CDOS, Bernadete Ayres, MD, Hakan Demirci, MD   +3 more
doaj   +1 more source

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

Advanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha, Bilguun Nurzed, Mostafa Berangi, Andre Kuehne, Helmar Waiczies, Igor Fabian Tellez Ceja, Xiang Hu, Thomas Gladytz, Lisa Krenz, Dave Huebler, Beate Endemann, Claudia Brockmann, Ebba Beller, Oliver Stachs, Thoralf Niendorf   +14 more
wiley   +1 more source

A pilot study of morphometric analysis of choroidal vasculature in vivo, using en face optical coherence tomography. [PDF]

PLoS ONE, 2012
To study the ability of volumetric spectral domain optical coherence tomography (SD-OCT) to perform quantitative measurement of the choroidal vasculature in vivo.Choroidal vascular density and vessel size were quantified using en face choroidal scans ...
Mahsa Sohrab, Katherine Wu, Amani A Fawzi   +2 more
doaj   +1 more source

Differences in Ocular Blood Flow Between People of African and European Descent With Healthy Eyes [PDF]

, 2016
Purpose: To investigate differences in ocular blood flow between people of African descent (AD) and European descent (ED) with healthy eyes. Materials and Methods: Retrobulbar and retinal capillary blood flow was assessed in 1 eye of 58 participants ...
Eikenberry, Jennifer, Harris, Alon, Kaskan, Betül, Olinde, Carine, Racette, Lyne, Ramezani, Koosha, Siesky, Brent, Tobe, Leslie A., WuDunn, Darrell   +8 more
core   +1 more source

Characterization of Choriocapillaris and Choroidal Abnormalities in Alport Syndrome [PDF]

, 2022
Purpose: To analyze the characteristics of the choriocapillaris and the choroid in patients with Alport syndrome (AS) and investigate their clinical and demographic associations. Methods: Multicenter, cross-sectional study.
Aschauer C., Cicinelli M. V., Ghossein C., Gill M. K., Jampol L. M., Laccone F., Nagel M., Ritter M., Tausif H.   +8 more
core   +1 more source

Choroidal vascularity index and choroidal thickness: potential biomarkers in retinitis pigmentosa

Eye, 2022
AbstractRetinitis pigmentosa (RP) is the commonest inherited retinal dystrophy. It is characterized by progressive photoreceptor degeneration and cell death and ongoing neuronal and vascular impairment. In recent years, pathophysiological alterations of the choroid have begun to be appreciated in RP.
Solmaz Abdolrahimzadeh, Mariachiara Di Pippo, Chiara Ciancimino, Federico Di Staso, Andrew John Lotery   +4 more
openaire   +3 more sources

Therapeutic Gases in Biomedicine: Updates on Nitric Oxide and Beyond

Advanced Science, EarlyView.
Therapeutic gases, including NO, CO, H2S, H2, CO2, O2, and Xe, play vital roles in cellular signaling and repair. This review highlights the emerging carriers and delivery systems that enable controlled, localized gas release for diagnostic and therapeutic applications.
Syed Muntazir Andrabi, Navatha Shree Sharma, Imran Ibn Gani Rather, S. M. Shatil Shahriar, Jingwei Xie   +4 more
wiley   +1 more source

Microrobotic Catheterization of the Ophthalmic Artery for Targeted Treatment of Retinoblastoma

Advanced Intelligent Systems, EarlyView.
A microrobotic platform is presented that allows teleoperated and autonomous navigation of flow‐driven magnetic microcatheters, MagFlow, into the ophthalmic artery for superselective intra‐arterial infusion of chemotherapy to treat retinoblastoma. Extensive benchtop validations with patient‐derived biomimetic phantoms under optical and fluoroscopic ...
Artur Banach, Mehdi Krichen, Julian Raub, Christina Stathopoulos, Bruno Bartolini, Mahmut Selman Sakar   +5 more
wiley   +1 more source