Results 61 to 70 of about 558,722 (284)

Water flow based vessel detection in retinal images

, 2006
Previous vessel segmentation methods mainly concentrate on the general structure, and often ignore the accuracy, smoothness and continuity of vessel boundaries. A water flow based method is proposed to solve the problem. It embodies the fluidity of water
Nixon, Mark S, Liu, Xin U
core   +2 more sources

Fast retinal vessel analysis [PDF]

Journal of Real-Time Image Processing, 2013
We introduce a fast image processing system that allows to analyse digital data-bases of retinal images in a short time, and to process the image in situ while the patient is examined. While it achieves a comparable quality as state-of-the-art methods, it differs from most of them by the fact that it is extremely fast.
Michael Krause 0007, Ralph Maria Alles, Bernhard Burgeth, Joachim Weickert   +3 more
openaire   +2 more sources

Intelligent Micro/Nanorobots for Targeted Interventional Therapy: From Bench to Clinic

Advanced Robotics Research, EarlyView.
Zirui Zhang et al. reviewed the application and challenges of mobile nanomachines in interventional therapy. By converting exogenous energy, including chemical, magnetic, optical, and ultrasonic sources, into mechanical forces, micro/nanorobots (MNRs) enable precise actuation at unprecedented scales. Evolving far beyond traditional drug delivery, these
Zirui Zhang, Yu Dong, Yongsheng Du, Rui Gao, Lin Zhang, Fei Tong   +5 more
wiley   +1 more source

Late clinical characteristics of infants with retinopathy of prematurity and treated with cryotherapy [PDF]

International Journal of Ophthalmology, 2016
AIM: To describe the clinical characteristics and late results of patients with retinopathy of prematurity (ROP) treated with “6h cryotherapy”. METHODS: Out of 1252 infants screened for ROP, 52 patients were treated with temporal 6h cryotherapy from ...
Eren Cerman, Deniz Ozarslan Ozcan, Hande Celiker, Muhsin Eraslan, Ozlem Sahin, Haluk Kazokoglu   +5 more
doaj   +1 more source

Analysis of retinal vessels in eyes with retinitis pigmentosa by retinal oximeter [PDF]

Acta Ophthalmologica, 2014
AbstractPurposeTo study changes in the oxygen saturation and calibre of retinal vessels in the eyes of patients with retinitis pigmentosa (RP).MethodIn this cross‐sectional study, 63 eyes of 63 patients with RP and 14 eyes of 14 healthy subjects were enrolled and examined at Toyama University Hospital. Retinal oximetry measurements were performed using
Tomoko, Ueda-Consolvo, Chiharu, Fuchizawa, Mitsuya, Otsuka, Takuya, Nakagawa, Atsushi, Hayashi   +4 more
openaire   +2 more sources

Automated retinal analysis [PDF]

, 2006
Diabetes is a chronic disease affecting over 2% of the population in the UK [1]. Long-term complications of diabetes can affect many different systems of the body including the retina of the eye.
Lowell, James ?, Lowell, James Α.
core  

Noninvasive, In Vivo Assessment of Mouse Retinal Structure Using Optical Coherence Tomography [PDF]

, 2009
BACKGROUND: Optical coherence tomography (OCT) is a novel method of retinal in vivo imaging. In this study, we assessed the potential of OCT to yield histology-analogue sections in mouse models of retinal degeneration.
Gesine Huber, Huber, G., Muehlfriedel, Regine, Edda Fahl, Jan Wijnholds, Beck, SC, Remé Charlotte E., Tanimoto, Naoyuki, Tanimoto Naoyuki, Pacal, M, Van de Pavert, S.A., Fischer M. Dominik, Fischer, M.D., Pacal Marek, Christian Grimm, Muehlfriedel Regine, Wenzel, Andreas, Charlotte E Remé, Charlotte E. Remé, Pacal, Marek, Serge A van de Pavert, M. Dominik Fischer, Rod Bremner, Wenzel, A., Bremner Rod, Remé, Charlotte E, Fischer, M Dominik, Susanne C. Beck, Huber, Gesine, Wijnholds, J, Fahl, E, Beck, S.C., Marek Pacal, Grimm Christian, Wenzel, A, Regine Muehlfriedel, Huber Gesine, Wijnholds, Jan, Tanimoto, N, Bremner, R., Reme, C.E., Wijnholds, Jan; https://orcid.org/, Bremner, R, Seeliger Mathias W., Beck, Susanne C., Fischer, M. Dominik, Mathias W Seeliger, Wijnholds Jan, Bremner, Rod, van de Pavert Serge A., M Dominik Fischer, Andreas Wenzel, Mühlfriedel, Regine, Tanimoto, N., Fahl, E., Seeliger, Mathias W, Fischer, Manuel, Beck Susanne C., Seeliger, Mathias W., Remé, Charlotte E., Van De Pavert, SA, Fahl, Edda, Pacal, M., Remé, CE, van de Pavert, Serge A., Beck, Susanne C; https://orcid.org/, Huber, G, Grimm, C., Seeliger, MW, Wenzel Andreas, Fahl Edda, Mathias W. Seeliger, Pavert, S.A. van de, Grimm, C, Grimm, Christian, Grimm, Christian; https://orcid.org/, Muehlfriedel, R., Serge A. Van De Pavert¤b, Wijnholds, J., van de Pavert, Serge A, Susanne C Beck, Fischer, MD, Muehlfriedel, R, Seeliger, M.W., Naoyuki Tanimoto   +84 more
core   +2 more sources

Delineation Methodology Advancements of Retinal Vessels

, 2023
Retinal vessel trees play an essential role in clinical decision and quantitative analysis of ophthalmopathy. The changes in the morphological properties of retinal vessels provide accessible information used for diagnosing, screening, and monitoring ...
Challoob, Mohsin
core   +1 more source

A Pentaradial and Bilateral Combined Photoreception System in the Sea Cucumber is Mediated by a Blue Light‐Sensitive R‐Opsin

Advanced Science, EarlyView.
The sea cucumber Holothuria leucospilota detects blue and adjacent wavelengths of light via an r‐opsin with a maximum absorption at 459 nm. In the oral tentacles, papillae, and tube feet, distinct light‐sensing structures with specialized morphologies are formed, constituting a unique pentaradial and bilateral combined photoreception system.
Jiasheng Huang, Chunhua Ren, Zhou Qin, Yimeng Cui, Bingbing Zhang, Peng Luo, Xuan Wang, Yaoqi Xie, Xin Zhang, Aifen Yan, Yang Zhang, Dingding Fan, Yang Liu, Wenjie Pan, Xiao Jiang, Lihong Yuan, Haipeng Qin, David M. Irwin, Chaoqun Hu, Yang Liu, Ting Chen   +20 more
wiley   +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