keyword
MENU ▼
Read by QxMD icon Read
search

Contouring

keyword
https://www.readbyqxmd.com/read/29694848/customizable-cap-implants-for-neurophysiological-experimentation
#1
Jackson D Blonde, Megan Roussy, Rogelio Luna, Borna Mahmoudian, Roberto A Gulli, Kevin C Barker, Jonathan C Lau, Julio C Martinez-Trujillo
BACKGROUND: Several primate neurophysiology laboratories have adopted acrylic-free, custom-fit cranial implants. These implants are often comprised of titanium or plastic polymers, such as polyether ether ketone (PEEK). Titanium is favored for its mechanical strength and osseointegrative properties whereas PEEK is notable for its lightweight, machinability, and MRI compatibility. Recent titanium/PEEK implants have proven to be effective in minimizing infection and implant failure, thereby prolonging experiments and optimizing the scientific contribution of a single primate...
April 22, 2018: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29691967/new-classification-of-maxillary-sinus-contours-and-its-relation-to-sinus-floor-elevation-surgery
#2
Lixuan Niu, Juan Wang, Huajie Yu, Lixin Qiu
BACKGROUND: It is complicated to select an appropriate sinus floor elevation and the procedure for sinus floor elevation lacks of consensus. Sinus contour plays an important role in choosing a surgery approach. But there are still no published articles revealing the influence of sinus contours to sinus floor elevation surgery. PURPOSE: We propose a new classification depending on sinus contours from cone-beam computed tomography (CBCT), analyze clinical characters of different types, and investigate the relationship between sinus contours and sinus floor elevation...
April 25, 2018: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29691041/application-of-pre-contoured-anatomic-locking-plate-for-treatment-of-humerus-split-type-greater-tuberosity-fractures-a-prospective-review-of-68-cases-with-an-average-follow-up-of-2-5-years
#3
Chuanzhen Hu, Kaihua Zhou, Fugen Pan, Qilin Zhai, Weifeng Wen, Xiaojian He
OBJECTIVES: Although various implants exist for 3- and 4-part proximal humerus fractures, few implants are appropriate for humerus split type greater tuberosity fractures. The goal of this study was to assess the efficacy of pre-contoured anatomic locking plate for humerus split type greater tuberosity fractures. METHODS: A retrospective review of 68 patients with humerus split type greater tuberosity fractures treated with open reduction and internal fixation using anatomic locking plates between January 2014 and October 2016...
April 18, 2018: Injury
https://www.readbyqxmd.com/read/29690934/multi-dimensional-analysis-of-oral-cavity-and-oropharyngeal-defects-following-cancer-extirpation-surgery-a-cadaveric-study
#4
Sherif Idris, Alex M Mlynarek, Khalid Ansari, Jeffrey R Harris, Nabil Rizk, David Cote, Daniel A O'Connell, Heather Allen, Peter Dziegielewski, Hadi Seikaly
BACKGROUND: Defects following resection of tumors in the head and neck region are complex; more detailed and defect-specific reconstruction would likely result in better functional and cosmetic outcomes. The objectives of our study were: 1) to improve the understanding of the two- and three-dimensional nature of oral cavity and oropharyngeal defects following oncological resection and 2) to assess the geometric dimensions and the shapes of fasciocutaneous free flaps and locoregional tissue flaps required for reconstruction of these defects...
April 24, 2018: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/29690705/-comparison-of-bone-destruction-markers-in-patients-with-gouty-arthritis-under-different-musculoskeletal-ultrasonic-manifestations
#5
Y N Fei, S M Tang, G Zhang, Y H Li, M Shao, L F Xie, Y C Zhong, X W Zhang
Objectives: To observe the correlation between the different ultrasonic manifestations of gouty arthritis and the indexes of bone destruction (Dickkopf-1, RANKL), in order to further explore the role of musculoskeletal ultrasonography in the diagnosis and monitoring of gouty arthritis. Methods: 160 cases of gouty arthritis from clinic of the Department of Rheumatology of Peking University People's Hospital between July 2016 and June 2017 were recruited in this study. These patients were examined by musculoskeletal ultrasonography (bilateral first metatarsophalangeal joints, bilateral ankle joints and bilateral knee joints)...
April 3, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29689493/are-lexical-tones-musical-native-language-s-influence-on-neural-response-to-pitch-in-different-domains
#6
Ao Chen, Varghese Peter, Frank Wijnen, Hugo Schnack, Denis Burnham
Language experience shapes musical and speech pitch processing. We investigated whether speaking a lexical tone language natively modulates neural processing of pitch in language and music as well as their correlation. We tested tone language (Mandarin Chinese), and non-tone language (Dutch) listeners in a passive oddball paradigm measuring mismatch negativity (MMN) for (i) Chinese lexical tones and (ii) three-note musical melodies with similar pitch contours. For lexical tones, Chinese listeners showed a later MMN peak than the non-tone language listeners, whereas for MMN amplitude there were no significant differences between groups...
April 21, 2018: Brain and Language
https://www.readbyqxmd.com/read/29689283/geometry-processing-of-conventionally-produced-mouse-brain-slice-images
#7
Nitin Agarwal, Xiangmin Xu, M Gopi
BACKGROUND: Brain mapping research in most neuroanatomical laboratories relies on conventional processing techniques, which often introduce histological artifacts such as tissue tears and tissue loss. NEW METHOD: In this paper we present techniques and algorithms for automatic registration and 3D reconstruction of conventionally produced mouse brain slices in a standardized atlas space. This is achieved first by constructing a virtual 3D mouse brain model from annotated slices of Allen Reference Atlas (ARA)...
April 21, 2018: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29687096/improved-volume-and-contour-stability-with-thin-socket-shield-preparation-in-immediate-implant-placement-and-provisionalization-in-the-esthetic-zone
#8
Serhat Aslan
Tooth replacement with a dental implant in the esthetic zone is a challenging treatment modality for the clinician. Each step of the treatment from tooth extraction to the definitive restoration should be performed meticulously to achieve a good esthetic outcome. Negative effects of the extraction can be minimized by various treatment protocols. Recent developments involving partial root retention (socket-shield technique) offer enhanced buccal tissue contour in these cases. This clinical report presents a slight modification to the socket-shield technique by preparing a thin shield and performing immediate implant placement...
2018: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/29687095/volumetric-alterations-around-single-tooth-implants-using-the-socket-shield-technique-preliminary-results-of-a-prospective-case-series
#9
Marc Hinze, Rainer Janousch, Sabine Goldhahn, Markus Schlee
OBJECTIVE: To demonstrate in a prospective cohort study that immediate implantation and provisionalization in combination with the socket-shield technique will result in volume stability of the mucosa adherent to the inserted implant. MATERIAL AND METHODS: Patients with an indication for a single tooth implant underwent application of the socket-shield technique and immediate implantation of a provisional implant crown. A noninvasive volumetric measurement was performed according to the method described by Windisch et al (2007) at baseline and 12 weeks later...
2018: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/29686207/a-new-and-four-known-species-of-diphtherophora-nematoda-diphtherophoridae-from-iran-with-a-diagnostic-compendium-of-its-species
#10
Reza Ghaderi, Leila Kashi, Hossein Mirbabaei Karani, Akbar Karegar
A new and four known species of the genus Diphtherophora-D. geraerti sp. n., D. caudata, D. obesa, D. perplexans and D. tenera-were collected and identified from different plants and localities in Iran. Morphological and morphometric characters of Diphtherophora geraerti sp. n. are compared with those of closely-related species, including D. siddiqii, D. brevicollis, D. lata, D. obesa, D. citri, D. vasilevi and D. vitoshae. Females of the new species have a head continuous with the body contour, spear 11-14 µm in length, rod-shaped spermatozoa and conical tail with bluntly rounded to hemispherical terminus...
December 18, 2017: Zootaxa
https://www.readbyqxmd.com/read/29685568/posterolateral-spiral-shaped-one-third-tubular-plate-stabilization-for-a-long-spiral-fracture-of-the-lateral-malleolus
#11
Vladimir B Shur, Vera Malezhik, Viktor Svyatkovsky
We present surgical stabilization of a long spiral fibular fracture using a contoured plate, which allows for better fixation of the fracture compared with standard plating. We believe this technique modification provides satisfactory compression and better anatomic orientation to the fibula to facilitate closed fixation.
May 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29685548/evaluation-of-an-accelerated-3d-space-sequence-with-compressed-sensing-and-free-stop-scan-mode-for-imaging-of-the-knee
#12
B Henninger, E Raithel, C Kranewitter, M Steurer, W Jaschke, C Kremser
PURPOSE: To prospectively evaluate a prototypical 3D turbo-spin-echo proton-density-weighted sequence with compressed sensing and free-stop scan mode for preventing motion artefacts (3D-PD-CS-SPACE free-stop) for knee imaging in a clinical setting. METHODS AND MATERIALS: 80 patients underwent 3T magnetic resonance imaging (MRI) of the knee with our 2D routine protocol and with 3D-PD-CS-SPACE free-stop. In case of a scan-stop caused by motion (images are calculated nevertheless) the sequence was repeated without free-stop mode...
May 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29684783/accurate-segmenting-of-cervical-tumors-in-pet-imaging-based-on-similarity-between-adjacent-slices
#13
Liyuan Chen, Chenyang Shen, Zhiguo Zhou, Genevieve Maquilan, Kimberly Thomas, Michael R Folkert, Kevin Albuquerque, Jing Wang
Because in PET imaging cervical tumors are close to the bladder with high capacity for the secreted 18 FDG tracer, conventional intensity-based segmentation methods often misclassify the bladder as a tumor. Based on the observation that tumor position and area do not change dramatically from slice to slice, we propose a two-stage scheme that facilitates segmentation. In the first stage, we used a graph-cut based algorithm to obtain initial contouring of the tumor based on local similarity information between voxels; this was achieved through manual contouring of the cervical tumor on one slice...
April 16, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29684463/non-imaged-based-method-for-matching-brains-in-a-common-anatomical-space-for-cellular-imagery
#14
Maëllie Midroit, Marc Thevenet, Arnaud Fournel, Joelle Sacquet, Moustafa Bensafi, Marine Breton, Laura Chalençon, Matthias Cavelius, Anne Didier, Nathalie Mandairon
BACKGROUND: Cellular imagery using histology sections is one of the most common techniques used in Neuroscience. However, this inescapable technique has severe limitations due to the need to delineate regions of interest on each brain, which is time consuming and variable across experimenters. NEW METHOD: We developed algorithms based on a vectors field elastic registration allowing fast, automatic realignment of experimental brain sections and associated labeling in a brain atlas with high accuracy and in a streamlined way...
April 20, 2018: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/29683430/reconnection-of-interrupted-curvilinear-structures-via-cortically-inspired-completion-for-ophthalmologic-images
#15
Jiong Zhang, Erik Bekkers, Da Chen, Tos T J M Berendschot, Jan Schouten, Josien P W Pluim, Yonggang Shi, Behdad Dashtbozorg, Bart M Ter Haar Romeny
OBJECTIVE: In this paper, we propose a robust, efficient, and automatic reconnection algorithm for bridging interrupted curvilinear skeletons in ophthalmologic images. METHODS: This method employs the contour completion process, i.e., mathematical modeling of the direction process in the roto-translation group to achieve line propagation/completion. The completion process can be used to reconstruct interrupted curves by considering their local consistency. An explicit scheme with finite-difference approximation is used to construct the three-dimensional (3-D) completion kernel, where we choose the Gamma distribution for time integration...
May 2018: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/29682643/determining-electrospun-morphology-from-the-properties-of-protein-polymer-solutions
#16
Hao Zhang, Shixia Xi, Yingchun Han, Lunyang Liu, Bo Dong, Zhijie Zhang, Quan Chen, Weihong Min, Qingrong Huang, Yunqi Li, Jingsheng Liu
Integrating natural macromolecules, e.g. proteins, is a progressive trend in the fabrication of biocompatible sub-micrometer fibers with tunable diameters using the electrospinning technique. The correlation between solution properties and electrospun morphology is critical; it is quite clear for synthetic linear polymer solutions but remains uncertain for solutions with protein. Here, we report the determination of electrospun morphology in protein-polymer solutions of poly(ethylene oxide) (PEO) and zein, a storage protein from corn...
April 23, 2018: Soft Matter
https://www.readbyqxmd.com/read/29682370/fatal-pneumococcus-sepsis-after-treatment-of-late-antibody-mediated-kidney-graft-rejection
#17
Gunilla Einecke, Jan Hinrich Bräsen, Nils Hanke, Hermann Haller, Anke Schwarz
Antibody-mediated rejection (ABMR) is a major cause of late renal allograft dysfunction and graft loss. Risks and benefits of treatment of late ABMR have not been evaluated in randomized clinical trials. We report on a 35-year-old patient with deterioration in renal function and progressive proteinuria 15 years after transplantation. Recurrent infections after a splenectomy following traumatic splenic rupture 3 years earlier had led to reduction of immunosuppression. Renal transplant biopsy showed glomerular double contours, 40% fibrosis/tubular atrophy, peritubular capillaritis, and positive C4d staining indicating chronic-active ABMR...
2018: Case Reports in Nephrology
https://www.readbyqxmd.com/read/29681997/simultaneous-segmentation-of-leukocyte-and-erythrocyte-in-microscopic-images-using-a-marker-controlled-watershed-algorithm
#18
Huisi Miao, Changyan Xiao
The density or quantity of leukocytes and erythrocytes in a unit volume of blood, which can be automatically measured through a computer-based microscopic image analysis system, is frequently considered an indicator of diseases. The segmentation of blood cells, as a basis of quantitative statistics, plays an important role in the system. However, many conventional methods must firstly distinguish blood cells into two types (i.e., leukocyte and erythrocyte) and segment them in independent procedures. In this paper, we present a marker-controlled watershed algorithm for simultaneously extracting the two types of blood cells to simplify operations and reduce computing time...
2018: Computational and Mathematical Methods in Medicine
https://www.readbyqxmd.com/read/29681771/dosimetry-of-the-left-anterior-descending-coronary-artery-in-left-breast-cancer-patients-treated-with-postoperative-external-radiotherapy
#19
Adela Poitevin-Chacón, Jessica Chávez-Nogueda, Rubí Ramos Prudencio, Alejandro Calvo Fernández, Alejandro Rodríguez Laguna, Jesús Linares, Julio César Martínez
Aim: To evaluate the dose distribution to the left anterior descending (LAD) coronary artery in patients treated with postoperative three-dimensional conformal radiotherapy (3DCRT). Background: Postoperative radiotherapy may increase the risk of heart disease, particularly in patients with left-sided breast cancer. Clinical data on doses to the LAD are limited. Materials and methods: Retrospective study of 14 patients who underwent postoperative 3DCRT for left breast cancer in 2014...
March 2018: Reports of Practical Oncology and Radiotherapy
https://www.readbyqxmd.com/read/29681059/treatment-of-single-maxillary-gingival-recession-associated-with-non-carious-cervical-lesion-randomized-clinical-trial-comparing-connective-tissue-graft-alone-to-graft-plus-partial-restoration
#20
Mauro Pedrine Santamaria, Camila Augusto Silveira, Ingrid Fernandes Mathias, Felipe Lucas da Silva Neves, Lúcio Murilo Dos Santos, Maria Aparecida Neves Jardini, Dimitris N Tatakis, Enilson Antônio Sallum, Eduardo Bresciani
BACKGROUND: Gingival recession is frequently associated with non-carious cervical lesion (NCCL) forming a combined defect (CD). The aim of this study was to evaluate a new multidisciplinary protocol for CDs. METHODS: Forty patients presenting 40 Miller's Class I or II gingival recession defects associated with B+ tooth cervical defect were randomly allocated to one of the following treatments: Test Group (n=20), partial restoration of the NCCL, in which the apical border of the restoration was placed 1mm beyond the cement-enamel junction estimation, and connective tissue graft (CTG+PR) and Control Group (n=20), odontoplasty of the NCCL and connective tissue graft (CTG)...
April 22, 2018: Journal of Clinical Periodontology
keyword
keyword
31955
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"