Results 111 to 120 of about 1,089,577 (427)

Volume staging for arteriovenous malformation SRS treatment using VMAT

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Volume staging involves dividing the target volume into smaller parts and treating each part separately. In this study, the feasibility of volume‐staged stereotactic radiosurgery (VS‐SRS) on a linear accelerator using volumetric modulated arc therapy (VMAT) and a frameless patient positioning system is investigated.
Claudia Mendez, Ermias Gete
wiley   +1 more source

Analysis of high-order aberrations in the eyes of elite police officers from the military police of São Paulo

open access: yesThe Pan-American Journal of Ophthalmology, 2020
Background: Recent advances in ophthalmic evaluation technology allow the measurement and quantification of high-order optical aberrations (HOAs). Several professionals have superior visual function compared to the general population.
Vitor Ruda Silva Aragão   +6 more
doaj   +1 more source

Ocular Recognition Databases and Competitions: A Survey [PDF]

open access: yes, 2019
The use of the iris and periocular region as biometric traits has been extensively investigated, mainly due to the singularity of the iris features and the use of the periocular region when the image resolution is not sufficient to extract iris information.
arxiv   +1 more source

Ocular melanoma

open access: yesSaudi Journal of Ophthalmology, 2012
Ocular melanomas comprise uveal and conjunctival sub-types, which are very different from each other. A large majority of uveal melanomas involve the choroid, with less than 10% being confined to the ciliary body and iris. They tend to metastasize haematogenously, almost always involving the liver.
Damato, Bertil E., Coupland, Sarah E.
openaire   +2 more sources

Bilateral ocular paralysis in an ocular emergency [PDF]

open access: yesBMJ Case Reports, 2018
### Case description A 70-year-old female patient was brought to the ocular emergency department with the chief complaints of bilateral severe ptosis and total external ophthalmoplegia (L>R) for the past 1 week (figure 1). There was no history of any significant medical or surgical intervention.
Amar Pujari   +3 more
openaire   +3 more sources

Targeting rapid TKI‐induced AXL upregulation overcomes adaptive ERK reactivation and exerts antileukemic effects in FLT3/ITD acute myeloid leukemia

open access: yesMolecular Oncology, EarlyView.
Adaptive ERK reactivation hinders FLT3 tyrosine kinase inhibitor (TKI) treatment in FLT3/ITD acute myeloid leukemia. Here, we report that FLT3 TKI treatment rapidly induces AXL expression and upregulation that is temporally associated with the adaptive ERK reactivation.
Tessa S. Seale   +9 more
wiley   +1 more source

Digital radiography image quality evaluation using various phantoms and software

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To investigate the effect of the exposure parameters on image quality (IQ) metrics of phantom images, obtained automatically using software or from visual evaluation. Methods Three commercial phantoms and a homemade phantom constructed according to the instructions given in the IAEA Human Health Series No.
Ioannis A. Tsalafoutas   +4 more
wiley   +1 more source

Reverse masquerade syndrome: Fungal adnexal infection mimicking carcinoma in a HIV-positive patient

open access: yesIndian Journal of Ophthalmology, 2013
A known HIV-positive male patient presented with a rapidly progressive ulcerative lesion involving the conjunctiva, lids, and anterior orbit along with a decrease in vision in the right eye. He was on anti retro-viral and anti-tubercular therapy. In view
Bipasha Mukherjee   +2 more
doaj   +1 more source

Using Eye Tracker To Evaluate Cockpit Design -- A Flight Simulation Study [PDF]

open access: yesAviation 2022, 2021
This paper investigates applications of eye tracking in transport aircraft design evaluations. Piloted simulations were conducted for a complete flight profile including take off, cruise and landing flight scenario using the transport aircraft flight simulator at CSIR National Aerospace Laboratories.
arxiv  

Ocular trauma [PDF]

open access: yesSouth African Family Practice, 2014
Ocular trauma is an important cause of unilateral blindness and visual  impairment across the world. Most injuries are accidental, work-related injuries in developed countries, while assaults predominate as a cause in developing countries. Trauma may result in various forms of ocular injuries, ranging from minor insult to major functional impairment ...
Mustak, H, Du Toit, N
openaire   +3 more sources

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