keyword
MENU ▼
Read by QxMD icon Read
search

Tissue Tracking

keyword
https://www.readbyqxmd.com/read/28231402/ex-vivo-visualization-of-human-ciliated-epithelium-and-quantitative-analysis-of-induced-flow-dynamics-by-using-optical-coherence-tomography
#1
Yuye Ling, Xinwen Yao, Ute A Gamm, Emilio Arteaga-Solis, Charles W Emala, Michael A Choma, Christine P Hendon
BACKGROUND AND OBJECTIVE: Cilia-driven mucociliary clearance is an important self-defense mechanism of great clinical importance in pulmonary research. Conventional light microscopy possesses the capability to visualize individual cilia and its beating pattern but lacks the throughput to assess the global ciliary activities and flow dynamics. Optical coherence tomography (OCT), which provides depth-resolved cross-sectional images, was recently introduced to this area. MATERIALS AND METHODS: Fourteen de-identified human tracheobronchial tissues are directly imaged by two OCT systems: one system centered at 1,300 nm with 6...
February 23, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28230583/evaluating-the-impact-of-radio-frequency-identification-retained-surgical-instruments-tracking-on-patient-safety-literature-review
#2
Kumiko O Schnock, Bonnie Biggs, Anne Fladger, David W Bates, Ronen Rozenblum
BACKGROUND: Retained surgical instruments (RSI) are one of the most serious preventable complications in operating room settings, potentially leading to profound adverse effects for patients, as well as costly legal and financial consequences for hospitals. Safety measures to eliminate RSIs have been widely adopted in the United States and abroad, but despite widespread efforts, medical errors with RSI have not been eliminated. OBJECTIVE: Through a systematic review of recent studies, we aimed to identify the impact of radio frequency identification (RFID) technology on reducing RSI errors and improving patient safety...
February 22, 2017: Journal of Patient Safety
https://www.readbyqxmd.com/read/28229410/therapeutic-application-of-placental-mesenchymal-stem-cells-reprogrammed-neurospheres-in-spinal-cord-injury-of-scid
#3
Vikram Sabapathy, Franklin Jebaraj Herbert, Sanjay Kumar
Mesenchymal stromal cells (MSCs) and induced pluripotent stem cells (iPSCs) have stimulated much interest in the scientific community and hopes among the general public since their discovery in 1966 due to a variety of potential applications it has in the field of regenerative medicine. Copious amount of literature, as well as long-term animal and human clinical trials, indicates that MSCs can be successfully used for therapeutic purpose without any extreme adversities. MSCs have been isolated from adult and fetal tissues...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28227857/light-source-depth-estimation-in-porcine-skin-using-spatially-resolved-diffuse-imaging
#4
Kieran A Brennan, Bryan P Ruddy, Poul M F Nielsen, Andrew J Taberner, Kieran A Brennan, Bryan P Ruddy, Poul M F Nielsen, Andrew J Taberner, Bryan P Ruddy, Andrew J Taberner, Poul M F Nielsen, Kieran A Brennan
We present an inexpensive imaging system for measuring the diffuse surface radiance profile produced by a light source within a turbid medium. The diffusion model of light propagation in multiple scattering media is used to estimate the optical properties of a sample and subsequently approximate the depth of an optical source. The system is shown to accurately estimate the relative changes in source depth in a homogeneous phantom. The absolute depth estimate may be improved with a better estimate of the optical parameters...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227428/calcification-detection-of-abdominal-aorta-in-ct-images-and-3d-visualization-in-vr-devices
#5
Jose A Garcia-Berna, Juan M Sanchez-Gomez, Judith Hermanns, Gines Garcia-Mateos, Jose L Fernandez-Aleman, Jose A Garcia-Berna, Juan M Sanchez-Gomez, Judith Hermanns, Gines Garcia-Mateos, Jose L Fernandez-Aleman, Jose L Fernandez-Aleman, Jose A Garcia-Berna, Judith Hermanns, Juan M Sanchez-Gomez, Gines Garcia-Mateos
Automatic calcification detection in abdominal aorta consists of a set of computer vision techniques to quantify the amount of calcium that is found around this artery. Knowing that information, it is possible to perform statistical studies that relate vascular diseases with the presence of calcium in these structures. To facilitate the detection in CT images, a contrast is usually injected into the circulatory system of the patients to distinguish the aorta from other body tissues and organs. This contrast increases the absorption of X-rays by human blood, making it easier the measurement of calcifications...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227120/tissue-characterization-using-simultaneous-estimation-of-backscatter-coefficient-and-elastic-shear-modulus
#6
Julien Rouyer, Gabriela Torres, Matthew W Urban, Roberto Lavarello, Julien Rouyer, Gabriela Torres, Matthew W Urban, Roberto Lavarello, Gabriela Torres, Matthew W Urban, Julien Rouyer, Roberto Lavarello
Tissue characterization using quantitative ultrasound (QUS) parameters has received significant attention in recent years due to its potential to improve the detection and diagnosis of diseased states. However, the vast majority of studies in QUS tissue typing have used parameters derived from either longitudinal or shear waves in isolation, thereby discarding potentially useful complementary information these parameters may carry. In this study, the simultaneous estimation of backscatter coefficients (derived from longitudinal waves) and shear modulus (derived from shear waves) was implemented on data from a clinical scanner...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226732/lung-tumor-boundary-tracking-in-mri-with-moving-mesh-correspondences-for-adaptive-radio-therapy
#7
Nazanin Tahmasebi, Pierre Boulanger, Kumaradevan Punithakumar, Nazanin Tahmasebi, Pierre Boulanger, Kumaradevan Punithakumar, Kumaradevan Punithakumar, Pierre Boulanger, Nazanin Tahmasebi
Delineation of lung tumor regions from magnetic resonance imaging (MRI) poses many difficulties due to MR signal similarities of the region of interest and surrounding area as well as the influence of respiration. However, accurate segmentation of the tumor region is of utmost importance in planning a radiation therapy since a small error can result in some healthy tissues to receive excessive radiation. This study presents a semi-automated method to delineate lung tumor regions from a sequence of MRIs. The proposed method uses a non-rigid image registration framework to propagate the boundaries of the tumor region in MRI acquired during a radiation treatment stage, given manual segmentation on frames acquired during pretreatment stage...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226469/towards-24-7-continuous-heart-rate-monitoring
#8
Adrian Tarniceriu, Jakub Parak, Philippe Renevey, Marko Nurmi, Mattia Bertschi, Ricard Delgado-Gonzalo, Ilkka Korhonen, Adrian Tarniceriu, Jakub Parak, Philippe Renevey, Marko Nurmi, Mattia Bertschi, Ricard Delgado-Gonzalo, Ilkka Korhonen, Jakub Parak, Ricard Delgado-Gonzalo, Adrian Tarniceriu, Philippe Renevey, Marko Nurmi, Mattia Bertschi, Ilkka Korhonen
Heart rate (HR) and HR variability (HRV) carry rich information about physical activity, mental and physical load, physiological status, and health of an individual. When combined with activity monitoring and personalized physiological modelling, HR/HRV monitoring may be used for monitoring of complex behaviors and impact of behaviors and external factors on the current physiological status of an individual. Optical HR monitoring (OHR) from wrist provides a comfortable and unobtrusive method for HR/HRV monitoring and is better adhered by users than traditional ECG electrodes or chest straps...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224116/persistence-of-functional-protein-domains-in-mycoplasma-species-and-their-role-in-host-specificity-and-synthetic-minimal-life
#9
Tjerko Kamminga, Jasper J Koehorst, Paul Vermeij, Simen-Jan Slagman, Vitor A P Martins Dos Santos, Jetta J E Bijlsma, Peter J Schaap
Mycoplasmas are the smallest self-replicating organisms and obligate parasites of a specific vertebrate host. An in-depth analysis of the functional capabilities of mycoplasma species is fundamental to understand how some of simplest forms of life on Earth succeeded in subverting complex hosts with highly sophisticated immune systems. In this study we present a genome-scale comparison, focused on identification of functional protein domains, of 80 publically available mycoplasma genomes which were consistently re-annotated using a standardized annotation pipeline embedded in a semantic framework to keep track of the data provenance...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28223475/reduced-first-phase-ejection-fraction-and-sustained-myocardial-wall-stress-in-hypertensive-patients-with-diastolic-dysfunction-a-manifestation-of-impaired-shortening-deactivation-that-links-systolic-to-diastolic-dysfunction-and-preserves-systolic-ejection-fraction
#10
Haotian Gu, Ye Li, Henry Fok, John Simpson, Jonathan C Kentish, Ajay M Shah, Philip J Chowienczyk
Impaired shortening deactivation of cardiac myocytes could sustain myocardial contraction, preserving ejection fraction at the expense of diastolic dysfunction. We examined the relationship between first-phase ejection fraction (EF1), the fraction of left ventricular volume ejected from the start of systole to the time of the first peak in left ventricular pressure (corresponding to the time of maximal ventricular shortening) to the duration of myocardial contraction and diastolic function in patients with hypertension (n=163), and varying degrees of diastolic dysfunction...
February 21, 2017: Hypertension
https://www.readbyqxmd.com/read/28220987/brain-tissue-reaction-to-deep-brain-stimulation-a-longitudinal-study-of-dbs-in-the-goettingen-minipig
#11
Dariusz Orlowski, Alexandre Michalis, Andreas N Glud, Anders R Korshøj, Lise M Fitting, Trine W Mikkelsen, André Mercanzini, Alain Jordan, Alain Dransart, Jens C H Sørensen
OBJECTIVES: The use of Deep Brain Stimulation (DBS) in treatment of various brain disorders is constantly growing; however, the number of studies of the reaction of the brain tissue toward implanted leads is still limited. Therefore, the aim of our study was to analyze the impact of DBS leads on brain tissue in a large animal model using minipigs. METHODS: Twelve female animals, one control and eleven with bilaterally implanted DBS electrodes were used in our experiment...
February 21, 2017: Neuromodulation: Journal of the International Neuromodulation Society
https://www.readbyqxmd.com/read/28220818/labeling-adipose-derived-stem-cell-sheet-by-ultrasmall-super-paramagnetic-fe3o4-nanoparticles-and-magnetic-resonance-tracking-in-vivo
#12
Shukui Zhou, Ting Yin, Qingsong Zou, Kaile Zhang, Guo Gao, Joseph G Shapter, Peng Huang, Qiang Fu
Cell sheet therapy has emerged as a potential therapeutic option for reparation and reconstruction of damaged tissues and organs. However, an effective means to assess the fate and distribution of transplanted cell sheets in a serial and noninvasive manner is still lacking. To investigate the feasibility of tracking Adipose derived stem cells (ADSCs) sheet in vivo using ultrasmall super-paramagnetic Fe3O4 nanoparticles (USPIO), canine ADSCs were cultured and incubated with USPIO and 0.75 μg/ml Poly-L-Lysine (PLL) for 12 h...
February 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28220508/quantitative-long-term-measurements-of-burns-in-a-rat-model-using-spatial-frequency-domain-imaging-sfdi-and-laser-speckle-imaging-lsi
#13
Adrien Ponticorvo, David M Burmeister, Rebecca Rowland, Melissa Baldado, Gordon T Kennedy, Rolf Saager, Nicole Bernal, Bernard Choi, Anthony J Durkin
BACKGROUND AND OJECTIVES: The current standard for diagnosis of burn severity and subsequent wound healing is through clinical examination, which is highly subjective. Several new technologies are shifting focus to burn care in an attempt to help quantify not only burn depth but also the progress of healing. While accurate early assessment of partial thickness burns is critical for dictating the course of treatment, the ability to quantitatively monitor wound status over time is critical for understanding treatment efficacy...
February 21, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28218446/in-situ-bioorthogonal-metabolic-labeling-for-fluorescence-imaging-of-virus-infection-in-vivo
#14
Hong Pan, Wen-Jun Li, Xiang-Jie Yao, Ya-Yun Wu, Lan-Lan Liu, Hua-Mei He, Ren-Li Zhang, Yi-Fan Ma, Lin-Tao Cai
Optical fluorescence imaging is an important strategy to explore the mechanism of virus-host interaction. However, current fluorescent tag labeling strategies often dampen viral infectivity. The present study explores an in situ fluorescent labeling strategy in order to preserve viral infectivity and precisely monitor viral infection in vivo. In contrast to pre-labeling strategy, mice are first intranasally infected with azide-modified H5N1 pseudotype virus (N3 -H5N1p), followed by injection of dibenzocyclooctyl (DBCO)-functionalized fluorescence 6 h later...
February 20, 2017: Small
https://www.readbyqxmd.com/read/28216130/amphiregulin-as-a-novel-serum-marker-of-puberty-in-girls
#15
Frank M Biro, Susan M Pinney, Richard C Schwartz, Bin Huang, Ashley M Cattran, Sandra Z Haslam
OBJECTIVES: Amphiregulin is a member of the epidermal growth factor family. In breast tissue, amphiregulin is a mediator of estrogen and progesterone signaling. The objectives were to examine the relationship of amphiregulin levels during peripuberty with estrogen levels. METHODS: The participants in this analysis were a subset from a longitudinal study of pubertal maturation, the Breast Cancer and the Environment Research Program. They were recruited between ages six and seven...
February 16, 2017: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/28216124/the-pattern-and-degree-of-capsular-fibrous-sheaths-surrounding-cochlear-electrode-arrays
#16
Reuven Ishai, Barbara S Herrmann, Joseph B Nadol, Alicia M Quesnel
An inflammatory tissue reaction around the electrode array of a cochlear implant (CI) is common, in particular at the electrode insertion region (cochleostomy) where mechanical trauma often occurs. However, the factors determining the amount and causes of fibrous reaction surrounding the stimulating electrode, especially medially near the perimodiolar location, are unclear. Temporal bone (TB) specimens from patients who had undergone cochlear implantation during life with either Advanced Bionics (AB) Clarion (TM) or HiRes90K(TM) (Sylmar, CA, USA) devices that have a half-band and a pre-curved electrode, or Cochlear (TM) Nucleus (Sydney, Australia) device that have a full-band and a straight electrode were evaluated...
February 16, 2017: Hearing Research
https://www.readbyqxmd.com/read/28215181/effect-of-cellular-and-extracellular-pathology-assessed-by-t1-mapping-on-regional-contractile-function-in-hypertrophic-cardiomyopathy
#17
Peter P Swoboda, Adam K McDiarmid, Bara Erhayiem, Graham R Law, Pankaj Garg, David A Broadbent, David P Ripley, Tarique A Musa, Laura E Dobson, James R Foley, Graham J Fent, Stephen P Page, John P Greenwood, Sven Plein
BACKGROUND: Regional contractile dysfunction is a frequent finding in hypertrophic cardiomyopathy (HCM). We aimed to investigate the contribution of different tissue characteristics in HCM to regional contractile dysfunction. METHODS: We prospectively recruited 50 patients with HCM who underwent cardiovascular magnetic resonance (CMR) studies at 3.0 T including cine imaging, T1 mapping and late gadolinium enhancement (LGE) imaging. For each segment of the American Heart Association model segment thickness, native T1, extracellular volume (ECV), presence of LGE and regional strain (by feature tracking and tissue tagging) were assessed...
February 20, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28213553/automated-cell-tracking-identifies-mechanically-oriented-cell-divisions-during-drosophila-axis-elongation
#18
Michael F Z Wang, Miranda Hunter, Gang Wang, Christopher McFaul, Christopher M Yip, Rodrigo Fernandez-Gonzalez
Embryos extend their anterior-posterior (AP) axis in the conserved process of axis elongation. Drosophila axis elongation occurs in an epithelial monolayer, the germband, and is driven by cell intercalation, cell shape changes, and oriented cell divisions at the posterior germband. Anterior germband cells also divide during axis elongation. We developed image analysis and pattern recognition methods to track dividing cells from confocal microscopy movies in a generally-applicable approach. Mesectoderm cells, forming the ventral midline, divided parallel to the AP axis, while lateral cells displayed a uniform distribution of division orientations...
February 17, 2017: Development
https://www.readbyqxmd.com/read/28210970/a-suspended-carbon-fiber-culture-to-model-myelination-by-human-schwann-cells
#19
Antonio Merolli, Yong Mao, Joachim Kohn
Understanding of myelination/remyelination process is essential to guide tissue engineering for nerve regeneration. In vitro models currently used are limited to cell population studies and cannot easily identify individual cell contribution to the process. We established a novel model to study the contribution of human Schwann cells to the myelination process. The model avoids the presence of neurons in culture; Schwann cells respond solely to the biophysical properties of an artificial axon. The model uses a single carbon fiber suspended in culture media far from the floor of the well...
April 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28209476/the-role-of-a-psp-producing-alexandrium-bloom-in-an-unprecedented-diamondback-terrapin-malaclemys-terrapin-mortality-event-in-flanders-bay-new-york-usa
#20
Theresa K Hattenrath-Lehmann, Robert J Ossiboff, Craig A Burnell, Carlton D Rauschenberg, Kevin Hynes, Russell L Burke, Elizabeth M Bunting, Kim Durham, Christopher J Gobler
Diamondback terrapins (Malaclemys terrapin) are a threatened or endangered species in much of their range along the U.S. Atlantic and Gulf coasts. Over an approximately three-week period from late April to mid-May 2015, hundreds of adult diamondback terrapins were found dead on the shores of Flanders Bay, Long Island, New York, USA. Concurrent with the mortality event, elevated densities of the paralytic shellfish toxin (PST)-producing dinoflagellate, Alexandrium fundyense (>10(4) cells L(-1)) and high levels of PST in bivalves (maximal levels = 540 μg STX eq...
February 14, 2017: Toxicon: Official Journal of the International Society on Toxinology
keyword
keyword
78361
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"