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https://www.readbyqxmd.com/read/29922989/-tips-and-technical-issues-for-performing-transoral-endoscopic-thyroidectomy-with-vestibular-approach-toetva-a-novel-scarless-technique-for-neck-surgery
#1
REVIEW
R Zorron, C Bures, A Brandl, P Seika, V Müller, M Alkhazraji, J Pratschke, M Mogl
BACKGROUND: Nowadays, minimally invasive thyroid and parathyroid gland resections for both benign and malignant tumors are rarely performed. Recently, promising new endoscopic transoral approaches to the anterior neck have been described with good results and few complications. This study describes the first clinical series in Germany using transoral endoscopic thyroidectomy-vestibular approach (TOETVA) and identifies technical issues and solutions. METHODS: The technique is indicated for hemithyroidectomy in patients without pre-existing neck operations...
June 19, 2018: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/29922839/dual-position-calibration-markers-for-total-hip-arthroplasty-theoretical-comparison-to-fixed-calibration-and-single-marker-method
#2
Christoph Kolja Boese, Sebastian Wilhelm, Stefan Haneder, Philipp Lechler, Peer Eysel, Jan Bredow
PURPOSE: Digital templating is considered a standard for total hip arthroplasty. Different means for the necessary calibration of radiographs are known. While single marker calibration with radiopaque spheres is the most common, it is associated with possible significant deviations from the true magnification of the hip. Notably, fixed magnification factors showed better results. Therefore, a dual-position calibration marker method was simulated and compared to the established methods...
June 20, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29922399/virtual-reality-in-neurointervention
#3
Chin Siang Ong, Gerard Deib, Pooja Yesantharao, Ye Qiao, Jina Pakpoor, Narutoshi Hibino, Ferdinand Hui, Juan R Garcia
Objectives: Virtual reality (VR) allows users to experience realistic, immersive 3D virtual environments with the depth perception and binocular field of view of real 3D settings. Newer VR technology has now allowed for interaction with 3D objects within these virtual environments through the use of VR controllers. This technical note describes our preliminary experience with VR as an adjunct tool to traditional angiographic imaging in the preprocedural workup of a patient with a complex pseudoaneurysm...
June 2018: Journal of Vascular and Interventional Neurology
https://www.readbyqxmd.com/read/29916370/screening-men-for-aaa-under-magnification-loupe-in-sweden
#4
Stefan Acosta
No abstract text is available yet for this article.
June 16, 2018: Lancet
https://www.readbyqxmd.com/read/29915511/detection-of-species-and-molecular-typing-of-leishmania-in-suspected-patients-by-targeting-cytochrome-b-gene-in-zahedan-southeast-of-iran
#5
Hadi Mirahmadi, Nasrin Rezaee, Ahmad Mehravaran, Peyman Heydarian, Saber Raeghi
Aim: Cutaneous leishmaniasis (CL) is one of the most important health problems that are capable of involving both tropical and subtropical areas, especially in Iran. This cross-sectional study aimed to differentiate the species that are able to cause CL in Zahedan city by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Materials and Methods: It was conducted on 145 suspected CL patients in Zahedan city between 2014 and 2016...
May 2018: Veterinary World
https://www.readbyqxmd.com/read/29912829/automated-metrics-in-a-virtual-reality-myringotomy-simulator-development-and-construct-validity
#6
Caiwen Huang, Horace Cheng, Yves Bureau, Hanif M Ladak, Sumit K Agrawal
OBJECTIVES: The objectives of this study were: 1) to develop and implement a set of automated performance metrics into the Western myringotomy simulator, and 2) to establish construct validity. STUDY DESIGN: Prospective simulator-based assessment study. SETTING: The Auditory Biophysics Laboratory at Western University, London, Ontario, Canada. PARTICIPANTS: Eleven participants were recruited from the Department of Otolaryngology-Head & Neck Surgery at Western University: four senior otolaryngology consultants and seven junior otolaryngology residents...
June 15, 2018: Otology & Neurotology
https://www.readbyqxmd.com/read/29911887/estimation-of-fine-scale-histologic-features-at-low-magnification
#7
Mark D Zarella, Matthew R Quaschnick, David E Breen, Fernando U Garcia
CONTEXT: - Whole-slide imaging has ushered in a new era of technology that has fostered the use of computational image analysis for diagnostic support and has begun to transfer the act of analyzing a slide to computer monitors. Due to the overwhelming amount of detail available in whole-slide images, analytic procedures-whether computational or visual-often operate at magnifications lower than the magnification at which the image was acquired. As a result, a corresponding reduction in image resolution occurs...
June 18, 2018: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/29911526/the-prevalence-of-malassezia-folliculitis-in-patients-with-papulopustular-comedonal-acne-and-their-response-to-antifungal-treatment
#8
Seda Pürnak, Murat Durdu, Mustafa Agah Tekindal, A Tülin Güleç, Deniz Seçkin
Because Malassezia folliculitis (MF) may clinically mimic acne vulgaris (AV), patients usually receive unnecessary and prolonged antibiotic treatment. We aimed to determine the prevalence of MF among patients with AV, and to evaluate its response to antifungal treatment. A total of 217 patients with AV underwent cytologic examination for the presence of Malassezia yeasts. Samples were obtained from lesional and nonlesional skin and stained with May-Grünwald-Giemsa. MF was diagnosed if there were more than six spores in one microscopic field (at ×400 magnification)...
2018: Skinmed
https://www.readbyqxmd.com/read/29909959/second-wave-hydrodissection-for-aspiration-of-cortical-remains-after-femtosecond-laser-assisted-cataract-surgery
#9
Jonathan C Lake, Celso Boianovsky, Thiago de Faria Pacini, Armando Crema
We describe the technique of second-wave hydrodissection (the first wave being the initial cortical cleaving hydrodissection) performed after the removal of the cataract nucleus in femtosecond laser-assisted cataract surgery. After femtosecond laser application, the cortex is typically found adhered to the anterior capsule. Under high magnification, a steady stream of a balanced salt solution is directed toward the anterior capsule using a hydrodissection cannula. Full cleavage of the remaining cortex is observed by noting the appearance of a dark inner circle by the capsulotomy edge once the balanced salt solution wave has separated the cortex from the capsule...
June 14, 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29904951/a-magnifying-glass-for-virtual-imaging-of-subwavelength-resolution-by-transformation-optics
#10
Fei Sun, Shuwei Guo, Yichao Liu, Sailing He
Traditional magnifying glasses can give magnified virtual images with diffraction-limited resolution, that is, detailed information is lost. Here, a novel magnifying glass by transformation optics, referred to as a "superresolution magnifying glass" (SMG) is designed, which can produce magnified virtual images with a predetermined magnification factor and resolve subwavelength details (i.e., light sources with subwavelength distances can be resolved). Based on theoretical calculations and reductions, a metallic plate structure to produce the reduced SMG in microwave frequencies, which gives good performance verified by both numerical simulations and experimental results, is proposed and realized...
June 14, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29900263/atom-probe-tomography-data-analysis-procedure-for-precipitate-and-cluster-identification-in-a-ti-mo-steel
#11
S Dhara, R K W Marceau, K Wood, T Dorin, I B Timokhina, P D Hodgson
An atom probe tomography data analysis procedure for identification of particles in a Ti-Mo steel is presented. This procedure has been used to characterise both carbide precipitates (larger particles) and solute clusters (smaller particles), as reported in an accompanying Mater. Sci. Eng. A paper [1]. Particles were identified using the maximum separation method (cluster-finding algorithm) after resolving peak overlaps at several locations in the mass spectrum. The cluster-finding algorithm was applied to the data in a two-stage process to properly identify particles having a bimodal size distribution...
June 2018: Data in Brief
https://www.readbyqxmd.com/read/29899626/knowledge-attitude-and-skills-of-dental-practitioners-of-puducherry-on-minimally-invasive-dentistry-concepts-a-questionnaire-survey
#12
Jasmine Rayapudi, Carounanidy Usha
Background: Minimally invasive dentistry (MID) encompasses early caries diagnosis through caries risk assessment (CRA), early detection of incipient carious lesion including primary and secondary prevention based on scientific evidence that remineralization of demineralized enamel and dentin is possible if detected early. Although the dental curriculum focuses on the advantages of MID in tooth preservation, this science is not usually translated into practice. Aim: This study aimed to evaluate the knowledge, attitude, and skills of dental practitioners of Puducherry regarding the concepts of MID...
May 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29899587/initial-investigations-of-a-special-high-definition-hi-def-zoom-capability-in-a-new-detector-system-for-neuro-interventional-procedures
#13
S V Setlur Nagesh, A Shankar, J Krebs, J Hinaman, D R Bednarek, S Rudin
Real-time visualization of fine details ranging to 100 um or less in neuro-vascular imaging guided interventions is important. A separate high-resolution detector mounted on a standard flat panel detector (FPD) was previously reported. This device had to be rotated mechanically into position over the FPD for high resolution imaging. Now, the new detector reported here has a high definition (Hi-Def) zoom capability along with the FPD built into one unified housing. The new detector enables rapid switching, by the operator between Hi-Def and FPD modes...
February 2018: Proceedings of SPIE
https://www.readbyqxmd.com/read/29893996/validation-of-a-whole-slide-image-based-teleconsultation-network
#14
Alexi Baidoshvili, Nikolas Stathonikos, Gerard Freling, Jos Bart, Nils 't Hart, Jeroen van der Laak, Jan Doff, Bert van der Vegt, Philip Kluin, Paul J van Diest
BACKGROUND: Most validation studies on digital pathology diagnostics have been performed in single institutes. Since rapid consultation of extramural experts is one of the most important use cases for digital pathology laboratory networks, the aim of this study was to validate a whole slide image-based teleconsultation network between three independent laboratories. METHODS: Each laboratory contributed 30 biopsies and / or excisions, adding up to 90 specimens (776 slides) of varying difficulty and covering a wide variety of organs and subspecialties...
June 12, 2018: Histopathology
https://www.readbyqxmd.com/read/29893959/development-of-a-three-dimensional-tomography-holder-for-in-situ-tensile-deformation-for-soft-materials
#15
Takeshi Higuchi, Takashi Gondo, Hiroya Miyazaki, Akemi Kumagai, Keizo Akutagawa, Hiroshi Jinnai
An in situ straining holder capable of tensile deformation and high-angle tilt for electron tomography was developed for polymeric materials. The holder has a dedicated sample cartridge, on which a variety of polymeric materials, such as microtomed thin sections of bulk specimens and solvent-cast thin films, can be mounted. Fine, stable control of the deformation process with nanoscale magnification was achieved. The holder allows large tensile deformation (≃800 μm) with a large field of view (800 × 200 μm before the deformation), and a high tilt angle (±75°) during in situ observations...
June 11, 2018: Microscopy
https://www.readbyqxmd.com/read/29893337/a-correlation-of-immunohistochemical-expression-of-tp53-and-cdkn1a-in-oral-epithelial-dysplasia-and-oral-squamous-cell-carcinoma
#16
Jay Ashokkumar Pandya, Karen Boaz, Srikant Natarajan, Nidhi Manaktala, K P Nandita, Amitha J Lewis
Purpose: Oral epithelial dysplasia (OED) occurs on exposure of epithelial cells to carcinogens and genetic alteration. Once the reversible cell damage is surpassed, cells either undergo apoptosis or transform into malignancy, chiefly oral squamous cell carcinoma (OSCC). Progressive accumulation of genetic errors (including mutations in TP53 and CDKN1A) is associated with the initiation and progression of potentially malignant oral lesions toward frank malignancy. The present study attempted to correlate the immunohistochemical expression of CDKN1A and TP53 with increasing severity of OED along with increased aggressiveness of OSCC as reflected in the clinicopathologic variables...
April 2018: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/29889292/wound-healing-inflammation-and-corneal-ultrastructure-after-smile-and-femtosecond-laser-assisted-lasik-a-human-ex-vivo-study
#17
Nikolaus Luft, Ricarda G Schumann, Martin Dirisamer, Daniel Kook, Jakob Siedlecki, Christian Wertheimer, Siegfried G Priglinger, Wolfgang J Mayer
PURPOSE: To assess the wound healing, inflammation, and tissue ultrastructure in the human corneal stroma after small incision lenticule extraction (SMILE) and femtosecond laser-assisted LASIK (FS-LASIK). METHODS: Sixteen corneoscleral discs of 16 human donors unsuitable for corneal transplantation were obtained from an eye bank. Eight eyes underwent SMILE with -5.00 diopters (D) of myopic correction; in 3 of them the lenticule was not extracted. Further 5 donor corneas were subjected to FS-LASIK with -5...
June 1, 2018: Journal of Refractive Surgery
https://www.readbyqxmd.com/read/29886987/biomagnification-and-enantiomeric-profiles-of-organochlorine-pesticides-in-food-web-components-from-zhoushan-fishing-ground-china
#18
Shanshan Zhou, Yongqiang Pan, Lina Zhang, Bin Xue, Anping Zhang, Meiqing Jin
Trophodynamics and chiral signatures of organochlorine pesticides (OCPs), including dichlorodiphenyltrichloroethanes (DDTs), hexachlorocyclohexanes (HCHs), and chlordanes in a food web from Zhoushan Fishing Ground, China, were studied. Residues of OCPs in all teleost fishes were within food safety levels. Strong positive correlations were found between trophic levels (TLs) and wet weight concentrations of target chemicals, with trophic magnification factors (TMFs) from 4.17 to 9.77. Lipid contents and TLs significantly correlated, which indirectly affect the bioaccumulation processes of OCPs...
June 2018: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/29886632/-role-of-the-operating-microscope-in-diagnosis-and-treatment-of-endodontic-diseases
#19
B X Hou
The excellent magnification and illumination of the operating microscope not only helps to improve the quality of conventional root canal therapy, but also plays an important role in the diagnosis and treatment of the difficult cases of endodontic diseases. It has an irreplaceable position over other equipment especially for the treatment of root canal therapy complications and the apical surgery. The structure and operation of the operating microscope are relatively complicated. The proficiency of the dentist may influence the evaluation of its clinical application effect...
June 9, 2018: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/29885964/radiological-indicator-of-reduction-adequacy-during-ankle-syndesmosis-surgery-a-computational-cadaveric-study
#20
Jun-Young Lee, Jae Hwan Lim, Gu-Hee Jung
PURPOSE: We introduced the intraoperative radiological indicator to assess the reduction adequacy without additional procedure or instrument, and propose the optimal syndesmotic screw trajectory. METHODS: Thirty adult cadavers (15 males and 15 females) without ankle problems were enrolled and subjected to continuous 0.75 mm-slice computed tomography (CT) scans. CT images were imported into Mimics® software to reconstruct three-dimensional (3D) model of ankle...
June 4, 2018: Injury
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