keyword
MENU ▼
Read by QxMD icon Read
search

optical diagnosis

keyword
https://www.readbyqxmd.com/read/28335357/the-assembly-of-dna-amphiphiles-at-liquid-crystal-aqueous-interface
#1
Jingsheng Zhou, Yuanchen Dong, Yiyang Zhang, Dongsheng Liu, Zhongqiang Yang
In this article, we synthesized a type of DNA amphiphiles (called DNA-lipids) and systematically studied its assembly behavior at the liquid crystal (LC)-aqueous interface. It turned out that the pure DNA-lipids at various concentrations cannot trigger the optical transition of liquid crystals from planar anchoring to homeotropic anchoring at the liquid crystal-aqueous interface. The co-assembly of DNA-lipid and l-dilauroyl phosphatidylcholine (l-DLPC) indicated that the DLPC assembled all over the LC-aqueous interface, and DNA-lipids prefer to couple with LC in certain areas, particularly in polarized and fluorescent image, forming micron sized net-like structures...
December 1, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28334875/white-matter-changes-in-paediatric-multiple-sclerosis-and-monophasic-demyelinating-disorders
#2
Giulia Longoni, Robert A Brown, Parya MomayyezSiahkal, Colm Elliott, Sridar Narayanan, Amit Bar-Or, Ruth Ann Marrie, E Ann Yeh, Massimo Filippi, Brenda Banwell, Douglas L Arnold
Most children who experience an acquired demyelinating syndrome of the central nervous system will have a monophasic disease course, with no further clinical or radiological symptoms. A subset will be diagnosed with multiple sclerosis, a life-long disorder. Using linear mixed effects models we examined longitudinal diffusion properties of normal-appearing white matter in 505 serial scans of 132 paediatric participants with acquired demyelinating syndromes followed for a median of 4.4 years, many from first clinical presentation, and 106 scans of 80 healthy paediatric participants...
March 14, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28333890/the-association-between-clinical-features-seen-on-fundus-photographs-and-glaucomatous-damage-detected-on-visual-fields-and-optical-coherence-tomography-scans
#3
Paula A Alhadeff, Carlos G De Moraes, Monica Chen, Ali S Raza, Robert Ritch, Donald C Hood
PURPOSE: To classify the appearance of the optic disc seen on fundus photographs of healthy subjects and patients with or suspected glaucoma whose diagnosis was based upon visual fields (VFs) and spectral-domain optical coherence tomography (sdOCT) results. PATIENTS AND METHODS: One eye of 100 patients with or suspected glaucoma and 62 healthy subjects were prospectively tested with 24-2 and 10-2 VF and macular and disc sdOCT cube scans. All eyes with or suspected glaucoma had a 24-2 mean deviation better than -6...
March 22, 2017: Journal of Glaucoma
https://www.readbyqxmd.com/read/28333854/presumed-retinal-pigment-epithelium-tumor-originating-from-unilateral-retinal-pigment-epithelium-dysgenesis
#4
Orly Gal-Or, Paul T Finger, Yale L Fisher, Lawrence A Yannuzzi, K Bailey Freund
PURPOSE: To describe a patient with a presumed retinal pigment epithelium (RPE) tumor originating from unilateral RPE dysgenesis. METHODS: Case report. RESULTS: A 30-year-old woman with an unremarkable medical and ocular history was referred for an evaluation of progressive central metamorphopsia in her left eye. Visual acuity was 20/20 in her right eye and 20/25 in her left eye. Funduscopic examination of the left eye revealed an elevated mass within an area of unilateral RPE dysgenesis showing hyperpigmentation and hypopigmentation with scalloped margins...
March 22, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28333853/multimodal-imaging-in-vortex-vein-varices
#5
Chiara Veronese, Giovanni Staurenghi, Marco Pellegrini, Chiara Maiolo, Laura Primavera, Mariachiara Morara, Grayson W Armstrong, Antonio P Ciardella
PURPOSE: The aim of this study is to describe the clinical presentation of vortex vein varices with multimodal imaging. METHODS: The authors carried out a retrospective case series of eight patients (7 female, 1 male) with an average age of 60.2 years (min 8, max 84, median 68.5) presenting with vortex vein varices. All patients were evaluated at the Sant'Orsola-Malpighi Hospital, University of Bologna, Bologna, Italy and at Luigi Sacco Hospital, University of Milan, Milan, Italy...
March 22, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28330960/a-multi-institutional-study-of-brainstem-gliomas-in-children-with-neurofibromatosis-type-1
#6
Jasia Mahdi, Amish C Shah, Aimee Sato, Stephanie M Morris, Robert C McKinstry, Robert Listernick, Roger J Packer, Michael J Fisher, David H Gutmann
OBJECTIVE: To define the clinical and radiologic features of brainstem gliomas (BSGs) in children with neurofibromatosis type 1 (NF1). METHODS: We performed a retrospective cross-sectional study of 133 children with NF1 and concurrent BSGs cared for at 4 NF1 referral centers. BSG was determined using radiographic criteria. Age at diagnosis, tumor location and appearance, clinical symptoms, treatment, and presence of a concurrent optic pathway glioma were assessed...
March 22, 2017: Neurology
https://www.readbyqxmd.com/read/28330887/usefulness-of-two-aspergillus-pcr-assays-and-aspergillus-galactomannan-and-%C3%AE-d-glucan-testing-of-bronchoalveolar-lavage-fluid-for-diagnosis-of-chronic-pulmonary-aspergillosis
#7
Naohisa Urabe, Susumu Sakamoto, Go Sano, Junko Suzuki, Akira Hebisawa, Yasuhiko Nakamura, Kazuya Koyama, Yoshikazu Ishii, Kazuhiro Tateda, Sakae Homma
We evaluated the usefulness of an Aspergillus galactomannan (GM) test, a β-D-glucan (βDG) test, and two different Aspergillus polymerase chain reaction (PCR) assays of bronchoalveolar lavage fluid (BALF) samples for diagnosis of chronic pulmonary aspergillosis (CPA). BALF samples from 28 patients with and 120 patients without CPA were collected. We calculated the sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio, negative likelihood ratio, and diagnostic odds ratio for each test individually and in combination with other tests...
March 22, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28329999/bilateral-cystic-coloboma-with-microphtalmos-and-eyelid-agenesis-us-and-mri-findings
#8
Youssef Omor, Benjamin Dhaene, Veronique Toppet, Marie Cassart, Patrice Jissendi-Tchofo
INTRODUCTION: The combination of bilateral microphthalmos, cystic coloboma and eyelid agenesis is rare. The definite diagnosis of this malformation is established by fundoscopic examination and confirmed by imaging modalities such as ultrasonography (US) and magnetic resonance imaging (MRI). This disorder may be associated with specific chromosomal abnormalities. CASE REPORT: A 1-week-old male newborn was referred for bilateral eyelid agenesis. He was born at term by caesarean for foetal distress, after an uneventful gestation...
March 2017: Journal of Neuroradiology. Journal de Neuroradiologie
https://www.readbyqxmd.com/read/28329893/graves-ophthalmopathy-in-a-paediatric-population
#9
Y Sadeghi, A Obéric, G Theintz, M Hamédani
Background Graves' disease is an autoimmune disorder leading to hyperthyroidism. It is often associated with ophthalmic manifestations. Graves' disease is reported to be rare in the paediatric population. Patients and Methods We performed a retrospective analysis on all patients diagnosed with ophthalmopathy related to Graves' disease at a paediatric age (less than 18 years old) in our institution between 2004 and 2015. Results Eight patients were identified: 6 females and 2 males. The median age at diagnosis was 11...
March 22, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28327449/integrated-local-binary-pattern-texture-features-for-classification-of-breast-tissue-imaged-by-optical-coherence-microscopy
#10
Sunhua Wan, Hsiang-Chieh Lee, Xiaolei Huang, Ting Xu, Tao Xu, Xianxu Zeng, Zhan Zhang, Yuri Sheikine, James L Connolly, James G Fujimoto, Chao Zhou
This paper proposes a texture analysis technique that can effectively classify different types of human breast tissue imaged by Optical Coherence Microscopy (OCM). OCM is an emerging imaging modality for rapid tissue screening and has the potential to provide high resolution microscopic images that approach those of histology. OCM images, acquired without tissue staining, however, pose unique challenges to image analysis and pattern classification. We examined multiple types of texture features and found Local Binary Pattern (LBP) features to perform better in classifying tissues imaged by OCM...
March 8, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28325649/elemental-analysis-of-serum-and-hair-from-pre-eclamptic-south-african-women
#11
K Maduray, J Moodley, C Soobramoney, R Moodley, T Naicker
Pre-eclampsia is a hypertensive disorder that is associated with adverse maternal and perinatal outcomes. It has been proposed that specific trace and macro elements associated with antioxidant activities may also play a contributory role in aetiology of pre-eclampsia. The aim of this study was to measure the concentrations of thirteen different elements in hair and serum samples from women with a diagnosis of pre-eclampsia and compare them with normotensive controls. Venous blood and pubic hair samples were collected from forty-three pre-eclamptic and twenty-three normotensive pregnant women...
March 9, 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28323295/augd-integrated-nanoprobes-for-optical-mri-ct-triple-modal-in-vivo-tumor-imaging
#12
Chao Xu, Yaling Wang, Chunyu Zhang, Yanwei Jia, Yunjing Luo, Xueyun Gao
Multi-modal imaging agents are desirable for tumor diagnosis because they can provide more information on the tumor than single-modal imaging agents. However, most reported multi-modal imaging agents are dual-modal agents rather than tri-modal agents; therefore, detailed information on the tumor may still be insufficient when such imaging agents are used. To ameliorate this issue, we synthesized a tri-modal imaging agent, composed of gold cluster and gadolinium oxide integrated nanoparticles (denoted as AuGds) using bovine serum albumin (BSA) as the template via a bio-mineralization method...
March 21, 2017: Nanoscale
https://www.readbyqxmd.com/read/28323178/study-on-the-deformations-of-the-lamina-cribrosa-during-glaucoma
#13
Hanjing Tian, Long Li, Fan Song
The lamina cribrosa is the primary site of optic nerve injury during glaucoma, and its deformations induced by elevated intraocular pressure are associated directly with the optic nerve injury and visual field defect. However, the deformations in a living body have been poorly understood yet so far. It is because that integral observation and precise measurement of the deformations in vivo are now almost impossible in the clinical diagnosis and treatment of glaucoma. In the present study, a new mechanical model of the lamina cribrosa is presented by using Reissner's thin plate theory...
March 18, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28322870/painless-bilateral-visual-loss-in-a-33-year-old-woman-with-severe-arterial-hypotension
#14
Olaia Subirà, Silvia Muñoz, Juan José Sánchez, Paloma Puyalto, Andrew G Lee
A 32-year-old woman experienced dizziness and headache for 5 months. She also complained of painless, progressive bilateral visual loss for several weeks. Prior to developing the initial symptoms, she had an uncomplicated pregnancy except for dizziness and systemic hypotension during the first term. Fundus examination disclosed prominent retinal arteries, as well diffuse microaneurysms, widespread intraretinal hemorrhages, and hyperemic optic discs. Brain magnetic resonance imaging revealed multiple supratentorial white matter lesions suggestive of ischemic strokes...
March 16, 2017: Survey of Ophthalmology
https://www.readbyqxmd.com/read/28321986/monitoring-retinoschisis-and-non-acute-retinal-detachment-by-optical-coherence-tomography-morphologic-aspects-and-clinical-impact
#15
Katharina Eibenberger, Stefan Sacu, Sandra Rezar-Dreindl, Julia Pöcksteiner, Michael Georgopoulos, Ursula Schmidt-Erfurth
PURPOSE: To differentiate retinoschisis (RS) from non-acute retinal detachment (naRD) in clinical routine using optical coherence tomography (OCT), describe unique morphological OCT characteristics and monitor disease progression. METHODS: This prospective, observational study included 64 eyes of 44 patients with either RS or naRD. Patients were examined clinically and using Heidelberg Spectralis OCT(®) , Topcon DRI OCT(®) and Cirrus HRA-OCT(®) over 2 years with follow-up at 1, 3, 6, 12 and 24 months...
March 21, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28321515/isolated-optic-neuritis-associated-with-mycoplasma-pneumoniae-infection-report-of-two-cases-and-literature-review
#16
Seo-Young Choi, You-Jin Choi, Jae-Hwan Choi, Kwang-Dong Choi
Mycoplasma pneumonia is a major pathogen of primary atypical pneumonia and has been known to cause various kinds of extrapulmonary manifestations involving almost all organs of the human body. Optic neuritis associated with M. pneumoniae infection has rarely been described and mostly, it combined other neurological complications including meningitis, meningoencephalitis, myelitis, and peripheral neuropathy. We report two patients who presented with isolated optic neuritis due to M. pneumoniae infection, and reviewed the literatures on five additional patients...
March 20, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28320481/cystoid-macular-edema-associated-with-preservative-free-latanoprost-after-uncomplicated-cataract-surgery-case-report-and-review-of-the-literature
#17
Olga E Makri, Foteini N Tsapardoni, Panagiotis Plotas, Nikistratos Ifantis, Paraskevi T Xanthopoulou, Constantine D Georgakopoulos
BACKGROUND: Cystoid macular edema associated with latanoprost administration has been reported in patients after complicated cataract surgery with coexisting risk factors. We present the first case of preservative free latanoprost associated cystoid macular edema that occurred many months after uncomplicated cataract surgery. CASE PRESENTATION: A 65-year old Caucasian female presented in the Outpatients Clinic complaining of reduced vision and metamorphopsia in the right eye...
March 20, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28318638/optical-coherence-tomography-guided-decisions-in-retinoblastoma-management
#18
Sameh E Soliman, Cynthia VandenHoven, Leslie D MacKeen, Elise Héon, Brenda L Gallie
PURPOSE: Assess the role of handheld optical coherence tomography (OCT) in guiding management decisions during diagnosis, treatment, and follow-up of eyes affected by retinoblastoma. DESIGN: Retrospective, noncomparative, single-institution case series. PARTICIPANTS: All children newly diagnosed with retinoblastoma from January 2011 to December 2015 who had an OCT session during their active treatment at The Hospital for Sick Children (SickKids) in Toronto, Canada...
March 15, 2017: Ophthalmology
https://www.readbyqxmd.com/read/28318154/-ex-vivo-assessment-of-the-potency-of-optical-coherence-tomography-for-the-detection-of-early-occlusal-caries
#19
Dai Xiao-Hua, Yao Hui, Lian Xiaoli, Li Yanni, Wang Yingying, Liu Xiaobin, Xing Lu
OBJECTIVE: This study aimed to evaluate the potency of optical coherence tomography (OCT) to detect early occlusal caries compared with clinical visual examination. METHODS: Approximately 97 sites of occlusal fissures on 77 extracted accessional human teeth were scored by three examiners using conventional visual examination and OCT. Results of histological examination on these sites obtained by polarimicroscope served as a gold standard to analyze the sensitivity (SE), specificity (SP), positive predictive value (PPV), and negative predictive value (NPV)...
December 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28317692/classifications-for-optical-diagnosis-of-colorectal-lesions-not-2b%C3%A2-with-jnet
#20
EDITORIAL
David G Hewett, Shinichiro Sakata
No abstract text is available yet for this article.
April 2017: Gastrointestinal Endoscopy
keyword
keyword
109909
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"