Results 61 to 70 of about 42,391 (243)

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

Subfoveal choroidal thickness and volume in severe internal carotid artery stenosis patients [PDF]

International Journal of Ophthalmology, 2017
AIM: To demonstrate the differences of retinal and choroidal structure changes in internal carotid artery (ICA) patients of China by enhanced-depth imaging optical coherence tomography (EDI-OCT).
Hui Wang, Yan-Ling Wang, Hong-Yang Li
doaj   +1 more source

Choroidal Thickness in Nonarteritic Anterior Ischaemic Optic Neuropathy: A Study with Optical Coherence Tomography [PDF]

, 2014
Nonarteritic anterior ischemic optic neuropathy (NA-AION) is the most common nonglaucomatous optic neuropathy in adults over 50 years of age. It is usually related to cardiovascular risk factors.
Abegão Pinto, L, Anjos, R, Cabugueira, A, Cunha, JP, Dias-Santos, A, Ferreira, J, Flores, R, Vicente, A   +7 more
core   +1 more source

GHRHR Deficiency Enhances Retinal Ganglion Cell Survival and Visual Functions in Experimental Glaucoma by Inhibiting Ferroptosis

Advanced Science, EarlyView.
Glaucoma, a major cause of blindness, involves retinal ganglion cell (RGC) degeneration. This study shows growth hormone‐releasing hormone receptor (GHRHR) deficiency preserves RGC survival and restores vision, unlike activation which only aids survival.
Yan Tong, Ming Ho Yam, Jiaxin Zhang, Lin Du, Linbin Zhou, Yolanda Wong Ying Yip, Bo Man Ho, Hemlata Bisnauthsing, Jiahui Li, Ivan Kong, Shushu Xu, Changzhen Fu, Karl K.H. So, Joaquim S.L. Vong, Ling‐Ping Cen, Ming‐Ming Yang, Khazeema Yousaf, Mai Har Sham, Sun On Chan, Poemen P. Chan, Chi Pui Pang, Clement C. Tham, Jing Na He, Jian Li, Wai Kit Chu   +24 more
wiley   +1 more source

Comparison of choroidal vessel thickness in children and adult eyes by enhanced-depth imaging optical coherence tomography imaging [PDF]

International Journal of Ophthalmology, 2018
AIM: To evaluate choroidal thickness, medium choroidal vessel thickness (MCVT) and large choroidal vessel thickness (LCVT) in normal children and adult subjects.
Daren Hanumunthadu, Jorge Ruiz-Medrano, Sunila Dumpala, Ayesha Jabeen, Asiya Jabeen, Abhilash Goud, José M Ruiz-Moreno, Jay Chhablani   +7 more
doaj   +1 more source

Lamina Cribrosa and Choroid Features and Their Relationship to Stage of Pseudoexfoliation Glaucoma. [PDF]

, 2018
PurposeTo better understand the relationship of lamina cribrosa (LC) and choroid features to the severity of pseudoexfoliation glaucoma (PXG).MethodsIn this cross-sectional study, 137 eyes of 122 subjects (47 eyes with moderate/advanced PXG [mean ...
Chen, Rebecca, Fard, Masoud Aghsaei, Moghimi, Sasan, Mohammadi, Massood, Motamed-Gorji, Nazgol, Nekoozadeh, Shahbaz, Weinreb, Robert N   +6 more
core  

Microelectromechanical system‐based devices for the diagnosis, treatment, and monitoring of ophthalmic diseases

Interdisciplinary Medicine, EarlyView.
Due to the characteristics of miniaturization, high sensing performance, integration, and high comfort, MEMS‐based devices were employed to design sensors, imaging systems, drug delivery systems, retinal prosthesis, surgical tools, and wearable products for the ophthalmic disease diagnosis, treatment, and monitoring.
Yaling Peng, Xiaoming Huang, Xueyuan Zhang, Yiling Jiang, Xin Zhang, Xueying Zeng, Fengyuan Sun, Peng Liu, Jin Zhou, Zewei Luo, Tong Wu   +10 more
wiley   +1 more source

Factors associated with extended remission in neovascular age-related macular degeneration on pro re nata treatment protocol. [PDF]

, 2020
AimTo show the characteristics and outcomes of patients with neovascular age-related macular degeneration (nAMD) who had extended remission (ER) while on a pro re nata (PRN) treatment protocol.MethodsThis was a retrospective case-control study of a ...
Amador-Patarroyo, Manuel J, Cheng, Lingyun, Dans, Kunny C, Freeman, William R, Lin, Tiezhu, Meshi, Amit, Muftuoglu, Ilkay Kilic   +6 more
core  

Analysis of Normal Peripapillary Choroidal Thickness via Spectral Domain Optical Coherence Tomography [PDF]

, 2011
Purpose To analyze the normal peripapillary choroidal thickness utilizing a commercial spectral domain optical coherence tomography (OCT) device and determine the intergrader reproducibility of this method.
Branchini, Lauren, Duker, Jay S., Fujimoto, James G., Ho, Joseph, Krishnan, Chandrasekharan, Regatieri, Caio   +5 more
core   +1 more source

Impact of 1024‐Matrix Size on Perforating Artery Visualisation in Cerebral Computed Tomography Angiography Using a 64‐Slice CT Scanner

Journal of Medical Radiation Sciences, EarlyView.
This study investigated whether using a larger image matrix (1024 × 1024 pixels instead of 512 × 512) improves the visibility of tiny brain arteries on CT scans performed with standard 64‐slice scanners. While physical image quality measurements remained unchanged, the larger matrix provided finer digital sampling of blood vessel structures, resulting ...
Hokuto Nagumo, Yuki Nagata, Mayumi Maruko, Jun Sakai, Yusuke Fujiwara, Joma Oikawa   +5 more
wiley   +1 more source