keyword
MENU ▼
Read by QxMD icon Read
search

3d image

keyword
https://www.readbyqxmd.com/read/29160929/anatomical-variations-of-the-human-cochlea-determined-from-micro-ct-and-high-resolution-ct-imaging-and-reconstruction
#1
Jie Tang, Xianglong Tang, Zhenhua Li, YiKang Liu, SongHua Tan, Heng Li, RongDan Ke, Zhi Wang, Li Gong, AnZhou Tang
Understanding the anatomical variations in the human cochlea are important for cochlear implants. This study examined these variations using a reconstructed fusion model of the skull and temporal bone. The 3D digital model of the temporal bone was reconstructed from multiple axial micro-CT scans of temporal bone and high resolution CT (HRCT) of the skull from 15 cadavers. A skull model was reconstructed and merged with the reconstructed temporal bone. The 3D relationship between the cochlea and the skull's mid-sagittal plane was analyzed...
November 21, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29160867/protocols-and-characterization-data-for-2d-3d-and-slice-based-tumor-models-from-the-predect-project
#2
Ronald de Hoogt, Marta F Estrada, Suzana Vidic, Emma J Davies, Annika Osswald, Michael Barbier, Vítor E Santo, Kjersti Gjerde, Hanneke J A A van Zoggel, Sami Blom, Meng Dong, Katja Närhi, Erwin Boghaert, Catarina Brito, Yolanda Chong, Wolfgang Sommergruber, Heiko van der Kuip, Wytske M van Weerden, Emmy W Verschuren, John Hickman, Ralph Graeser
Two-dimensional (2D) culture of cancer cells in vitro does not recapitulate the three-dimensional (3D) architecture, heterogeneity and complexity of human tumors. More representative models are required that better reflect key aspects of tumor biology. These are essential studies of cancer biology and immunology as well as for target validation and drug discovery. The Innovative Medicines Initiative (IMI) consortium PREDECT (www.predect.eu) characterized in vitro models of three solid tumor types with the goal to capture elements of tumor complexity and heterogeneity...
November 21, 2017: Scientific Data
https://www.readbyqxmd.com/read/29160401/fluoride-varnishes-against-dental-erosion-caused-by-soft-drink-combined-with-pediatric-liquid-medicine
#3
Adílis Kalina Alexandria, Ana Maria Gondim Valença, Lúcio Mendes Cabral, Lucianne Cople Maia
The present study evaluated the effect of NaF and CPP-ACP/NaF varnishes to reduce erosion produced by soft drink (SD) combined or not with pediatric liquid medicine. Enamel specimens were pre-treated with fluoride varnish, according to the following groups: NaF varnish (Duraphat®) or CPP-ACP/NaF varnish (MI varnishTM). Two types of erosive cycles were made: by soft drink erosion (SDE) or by pediatric liquid medicine plus soft drink erosion (PLM/SDE). Bovine enamel specimens were randomly assigned in six groups (n=10): G1=NaF + SDE; G2=CPP-ACP/NaF + SDE; G3=Distilled and deionized (DD) water + SDE; G4=NaF + PLM/SDE; G5=CPP-ACP/NaF + PLM/SDE and G6=DD water + PLM/SDE...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29160397/mechanical-preparation-showed-superior-shaping-ability-than-manual-technique-in-primary-molars-a-micro-computed-tomography-study
#4
Lídia Regina da Costa Hidalgo, Léa Assed Bezerra da Silva, Graziela Bianchi Leoni, Jardel Francisco Mazzi-Chaves, Emily Eduardo da Silva Carvalho, Alberto Consolaro, Manoel Damião Sousa-Neto
The aim of the study was to evaluate canal preparation in primary molars with hand files, ProTaper Next and Self-Adjusting File (SAF) by 2D and 3D micro-computed tomography (micro-CT) analysis. Canals of 24 primary molars were prepared with hand files (HF), ProTaper Next (PTN) and SAF (n=8/group). The teeth were scanned before and after root canal preparation and the pre- and postoperative micro-CT images were reconstructed. Changes in 2D (area, perimeter, roundness, minor and major diameter) and 3D [volume, surface area, structure model index (SMI)] morphological parameters, as well as canal transportation and lateral perforations were evaluated (Kruskal-Wallis and ANOVA; a=0...
July 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29160086/anatomic-and-radiologic-study-of-renal-avascular-plane-brodel-s-line-and-its-potential-relevance-on-percutaneous-and-surgical-approaches-to-the-kidney
#5
Veronica Macchi, Edgardo Picardi, Antonino Inferrera, Andrea Porzionato, Alessandro Crestani, Giacomo Novara, Raffaele De Caro, Vincenzo Ficarra
OBJECTIVE: The aim of the present anatomic and radiologic study was to evaluate the location, extension and characteristics of the Brödel's plane and eventually define its different patterns. MATERIAL AND METHODS: We evaluated 15 human normal kidneys sampled from un-embalmed cadavers without clinical history or anatomical evidence of renal diseases. Kidneys with the surrounding perirenal fat tissue were removed en bloc with the abdominal segment of the aorta. The renal artery was injected with acrylic and radiopaque resins...
November 21, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/29159991/journey-to-the-centre-of-the-cell-virtual-reality-immersion-into-scientific-data
#6
REVIEW
Angus P R Johnston, James Rae, Nicholas Ariotti, Benjamin Bailey, Andrew Lija, Robyn Webb, Charles Ferguson, Sheryl Maher, Thomas P Davis, Richard I Webb, John McGhee, Robert G Parton
Visualization of scientific data is crucial not only for scientific discovery but also to communicate science and medicine to both experts and a general audience. Until recently, we have been limited to visualizing the three-dimensional (3D) world of biology in 2 dimensions. Renderings of 3D cells are still traditionally displayed using two-dimensional (2D) media, such as on a computer screen or paper. However, the advent of consumer grade virtual reality (VR) headsets such as Oculus Rift and HTC Vive means it is now possible to visualize and interact with scientific data in a 3D virtual world...
November 21, 2017: Traffic
https://www.readbyqxmd.com/read/29159855/b1-artifact-reduction-in-abdominal-dce-mri-using-kt-points-first-clinical-assessment-of-dynamic-rf-shimming-at-3t
#7
Raphaël Tomi-Tricot, Vincent Gras, Franck Mauconduit, François Legou, Nicolas Boulant, Matthias Gebhardt, Dieter Ritter, Berthold Kiefer, Pierre Zerbib, Alain Rahmouni, Alexandre Vignaud, Alain Luciani, Alexis Amadon
BACKGROUND: The excitation inhomogeneity artifact occurring at 3T in the abdomen can lead to dramatic loss of signal and contrast, thereby hampering diagnosis. PURPOSE: To assess excitation homogeneity and image quality achieved by nonselective prototypical kT -points pulses, compared to tailored static RF shimming, in clinical routine on a commercial dual-transmit scanner. STUDY TYPE: Retrospective study with Institutional Review Board approval; informed consent was waived...
November 21, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29159850/from-two-to-three-dimensions-the-importance-of-the-third-dimension-for-evaluating-the-limits-to-neuronal-miniaturization-in-insects
#8
Stefan Fischer, Zhiyuan Lu, Ian A Meinertzhagen
Most studies dealing with the limits to miniaturization in insect brains have until now relied on information based on data collected in two dimensions: either histological sections imaged by light microscopy, or electron micrographs of single ultrathin sections imaged by transmission electron microscopy (TEM). To test the validity of transferring information gained from two-dimensional images to the third dimension, we examined a 3D image stack from serial-section TEM (ssTEM) of the optic neuropiles of the miniature parasitic wasp Trichogramma brassicae (Bezdenko, 1968)...
November 21, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/29159674/the-quadrant-method-measuring-four-points-is-as-a-reliable-and-accurate-as-the-quadrant-method-in-the-evaluation-after-anatomical-double-bundle-acl-reconstruction
#9
Yuta Mochizuki, Takao Kaneko, Keisuke Kawahara, Shinya Toyoda, Norihiko Kono, Masaru Hada, Hiroyasu Ikegami, Yoshiro Musha
PURPOSE: The quadrant method was described by Bernard et al. and it has been widely used for postoperative evaluation of anterior cruciate ligament (ACL) reconstruction. The purpose of this research is to further develop the quadrant method measuring four points, which we named four-point quadrant method, and to compare with the quadrant method. METHODS: Three-dimensional computed tomography (3D-CT) analyses were performed in 25 patients who underwent double-bundle ACL reconstruction using the outside-in technique...
November 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29159580/low-left-amygdala-volume-is-associated-with-a-longer-duration-of-unipolar-depression
#10
Maxim Zavorotnyy, Rebecca Zöllner, L R Schulte-Güstenberg, L Wulff, S Schöning, U Dannlowski, H Kugel, V Arolt, C Konrad
The amygdala plays a crucial role in the pathogenesis of major depressive disorder (MDD). While robust findings support a negative impact of illness duration on hippocampal volume in MDD, morphometric studies of the amygdala have yielded inhomogeneous results. Considering the methodical problems of automatic segmentation methods, a standardized segmentation protocol with proven inter- and intra-rater reliability was employed using high-resolution magnetic resonance imaging. To identify the effect of MDD on amygdala morphometry, 23 unipolar depressed patients who responded to antidepressant medication and 30 age-matched healthy controls (HC) were enrolled...
November 20, 2017: Journal of Neural Transmission
https://www.readbyqxmd.com/read/29159313/fibrosis-and-atrial-fibrillation-computerized-and-optical-mapping-a-view-into-the-human-atria-at-submillimeter-resolution
#11
Brian J Hansen, Jichao Zhao, Vadim V Fedorov
Recent studies strongly suggest that the majority of atrial fibrillation (AF) patients with diagnosed or subclinical cardiac diseases have established or even pre-existing fibrotic structural remodeling, which may lead to conduction abnormalities and reentrant activity that sustain AF. As conventional treatments fail to treat AF in far too many cases, an urgent need exists to identify specific structural arrhythmogenic fibrosis patterns, which may maintain AF, in order to identify effective ablation targets for AF treatment...
June 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29159206/influence-of-patient-position-and-other-inherent-factors-on-image-quality-in-two-different-cone-beam-computed-tomography-cbct-devices
#12
Ninita Lindfors, Henrik Lund, Hans Johansson, Annika Ekestubbe
Objectives: The aim of this in vitro study was to evaluate how a deviation from the horizontal plane, affects the image quality in two different CBCT-devices. Methods: A phantom head SK150 (RANDO, The Phantom Laboratory, Salem, NY, USA) was examined in two CBCT-units: Accuitomo 80 and Veraviewepocs 3D R100 (J. Morita Mfg. Corp. Kyoto, Japan). The phantom head was placed with the hard palate parallel to the horizontal plane and tilted 20 ° backwards. Exposures were performed with different field of views (FOVs), voxel sizes, slice thicknesses and exposure settings...
2017: European Journal of Radiology Open
https://www.readbyqxmd.com/read/29158962/sediment-tolerance-mechanisms-identified-in-sponges-using-advanced-imaging-techniques
#13
Brian W Strehlow, Mari-Carmen Pineda, Alan Duckworth, Gary A Kendrick, Michael Renton, Muhammad Azmi Abdul Wahab, Nicole S Webster, Peta L Clode
Terrestrial runoff, resuspension events and dredging can affect filter-feeding sponges by elevating the concentration of suspended sediments, reducing light intensity, and smothering sponges with sediments. To investigate how sponges respond to pressures associated with increased sediment loads, the abundant and widely distributed Indo-Pacific species Ianthella basta was exposed to elevated suspended sediment concentrations, sediment deposition, and light attenuation for 48 h (acute exposure) and 4 weeks (chronic exposure)...
2017: PeerJ
https://www.readbyqxmd.com/read/29158729/evaluation-of-deformable-image-registration-for-three-dimensional-temporal-subtraction-of-chest-computed-tomography-images
#14
Ping Yan, Yoshie Kodera, Kazuhiro Shimamoto
Purpose: To perform lung image registration for reducing misregistration artifacts on three-dimensional (3D) temporal subtraction of chest computed tomography (CT) images, in order to enhance temporal changes in lung lesions and evaluate these changes after deformable image registration (DIR). Methods: In 10 cases, mutual information (MI) lung mask affine mapping combined with cross-correlation (CC) lung diffeomorphic mapping was used to implement lung volume registration...
2017: International Journal of Biomedical Imaging
https://www.readbyqxmd.com/read/29157956/comparative-analysis-of-fixation-and-embedding-techniques-for-optimized-histological-preparation-of-zebrafish
#15
Jean E Copper, Lynn R Budgeon, Christina A Foutz, Damian B van Rossum, Daniel J Vanselow, Margaret J Hubley, Darin P Clark, David T Mandrell, Keith C Cheng
In recognition of the importance of zebrafish as a model organism for studying human disease, we have created a web-based reference atlas of zebrafish microanatomy for comparing histology and histopathology between model systems and with humans (http://bio-atlas.psu.edu). Fixation, decalcification, embedding, and sectioning were optimized to maximize section quality. A comparison of protocols involving six fixatives showed that 10% Neutral Buffered Formalin at 21°C for 24h yielded excellent results. Sectioning of juveniles and adults requires bone decalcification; EDTA at 0...
November 17, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/29157247/effects-of-implant-length-and-3d-bone-to-implant-contact-on-initial-stabilities-of-dental-implant-a-microcomputed-tomography-study
#16
Jui-Ting Hsu, Aaron Yu-Jen Wu, Lih-Jyh Fuh, Heng-Li Huang
BACKGROUND: The influences of potential bone-to-implant contact (BIC) area (pBICA), BIC area (BICA), and three dimensional (3D) BIC percentage (3D BIC%; defined as BICA divided by pBICA) in relation to the implant length on initial implant stability were studied. Correlations between these parameters were also evaluated. METHODS: Implants with lengths of 8.5, 10, 11.5, and 13 mm were placed in artificial bone specimens to measure three indexes of the initial implant stability: insertion torque value (ITV), Periotest value (PTV), and implant stability quotient (ISQ)...
November 21, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29157218/brain-medical-image-diagnosis-based-on-corners-with-importance-values
#17
Linlin Gao, Haiwei Pan, Qing Li, Xiaoqin Xie, Zhiqiang Zhang, Jinming Han, Xiao Zhai
BACKGROUND: Brain disorders are one of the top causes of human death. Generally, neurologists analyze brain medical images for diagnosis. In the image analysis field, corners are one of the most important features, which makes corner detection and matching studies essential. However, existing corner detection studies do not consider the domain information of brain. This leads to many useless corners and the loss of significant information. Regarding corner matching, the uncertainty and structure of brain are not employed in existing methods...
November 21, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/29155730/long-term-live-imaging-device-for-improved-experimental-manipulation-of-zebrafish-larvae
#18
Kayla Huemer, Jayne M Squirrell, Robert Swader, Kirsten Pelkey, Danny C LeBert, Anna Huttenlocher, Kevin W Eliceiri
The zebrafish larva is an important model organism for both developmental biology and wound healing. Further, the zebrafish larva is a valuable system for live high-resolution microscopic imaging of dynamic biological phenomena in space and time with cellular resolution. However, the traditional method of agarose encapsulation for live imaging can impede larval development and tissue regrowth. Therefore, this manuscript describes the zWEDGI (zebrafish Wounding and Entrapment Device for Growth and Imaging), which was designed and fabricated as a functionally compartmentalized device to orient larvae for high-resolution microscopy while permitting caudal fin transection within the device and subsequent unrestrained tail development and re-growth...
October 27, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155719/exploring-deep-space-uncovering-the-anatomy-of-periventricular-structures-to-reveal-the-lateral-ventricles-of-the-human-brain
#19
Alexandru S Colibaba, Aicee Dawn B Calma, Alexandra L Webb, Krisztina Valter
Anatomy students are typically provided with two-dimensional (2D) sections and images when studying cerebral ventricular anatomy and students find this challenging. Because the ventricles are negative spaces located deep within the brain, the only way to understand their anatomy is by appreciating their boundaries formed by related structures. Looking at a 2D representation of these spaces, in any of the cardinal planes, will not enable visualisation of all of the structures that form the boundaries of the ventricles...
October 22, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155252/3d-visualization-and-pathological-characteristics-of-cartilage-and-subchondral-bone-changes-in-the-lumbar-facet-joint-of-an-ovariectomized-mouse-model
#20
Chunyue Duan, Shuangfei Ni, Yong Cao, Shenghui Liao, Jianzhong Hu, Tianding Wu
BACKGROUD CONTEXT: Low back pain (LBP) is more prevalent among postmenopausal women than men. Ovariectomy (OVX) is an established animal model that mimics the estrogen deficiency of postmenopausal women. Little is known about the 3D morphological properties of cartilage and subchondral bone changes in the lumbar facet joint (LFJ) of an OVX mouse model. PURPOSE: The purpose of this study is to characterize the 3D morphological change of cartilage and subchondral bone in LFJ of an OVX mouse model...
November 15, 2017: Spine Journal: Official Journal of the North American Spine Society
keyword
keyword
87313
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"