keyword
MENU ▼
Read by QxMD icon Read
search

TILT

keyword
https://www.readbyqxmd.com/read/27914309/unique-approach-to-sensorimotor-training-with-a-new-device-combining-air-cushion-with-stochastic-translations-a-prospective-randomized-controlled-clinical-trial
#1
Christian Mittermaier, Maximilian Schindler, Benjamin Loader, Thomas Waldhoer, Clemens Ambrozy, Richard Crevenna, Karin Pieber
Sensorimotor training with a wide variety of available devices represents an important component in rehabilitation and prevention of different sports injuries and chronic diseases. The purpose of this study was to evaluate the effects of a sensorimotor training with a newly developed device, which consists of an instable platform moving on an air cushion, providing dynamic balance training by tilting and unanticipated stochastic translations on postural control. Seventy-two healthy young subjects were included in this prospective, randomized, controlled, and observer-blinded study...
November 25, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27913326/delay-and-standard-deviation-beamforming-to-enhance-specular-reflections-in-ultrasound-imaging
#2
Raja Sekhar Bandaru, Anders Rasmus Sornes, Jeroen Hermans, Eigil Samset, Jan D'hooge
Although interventional devices, such as needles, guide wires, and catheters, are best visualized by X-ray, real-time volumetric echography could offer an attractive alternative as it avoids ionizing radiation; it provides good soft tissue contrast, and it is mobile and relatively cheap. Unfortunately, as echography is traditionally used to image soft tissue and blood flow, the appearance of interventional devices in conventional ultrasound images remains relatively poor, which is a major obstacle toward ultrasound-guided interventions...
December 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27911346/influence-of-pelvic-tilt-on-functional-acetabular-orientation
#3
Robert K Zahn, Sarah Grotjohann, Matthias Pumberger, Heiko Ramm, Stefan Zachow, Michael Putzier, Carsten Perka, Stephan Tohtz
BACKGROUND: Pelvic tilt influences acetabular orientation (AO). Anatomical AO can be measured in relation to the anterior pelvic plane (APP), functional AO can be calculated relative to table's plane. OBJECTIVE: To assess to what extent functional AO is determined by pelvic tilt and if APP and table plane give equal information for correct AO. METHODS: AO was evaluated by computed tomography (CT) scans of 138 patients. Pelvic tilt, anatomical and functional AO were measured, differences between the two reference planes were calculated...
November 25, 2016: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/27911285/the-relation-between-chondromalacia-patella-and-meniscal-tear-and-the-sulcus-angle-trochlear-depth-ratio-as-a-powerful-predictor
#4
Hatice Resorlu, Coskun Zateri, Gurdal Nusran, Ferdi Goksel, Nilufer Aylanc
PURPOSE: To investigate the relation between chondromalacia patella and the sulcus angle/trochlear depth ratio as a marker of trochlear morphology. In addition, we also planned to show the relationship between meniscus damage, subcutaneous adipose tissue thickness as a marker of obesity, patellar tilt angle and chondromalacia patella. METHODS: Patients with trauma, rheumatologic disease, a history of knee surgery and patellar variations such as patella alba and patella baja were excluded...
November 25, 2016: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/27910596/a-new-setup-for-high-resolution-fast-x-ray-reflectivity-data-acquisition
#5
Milena Lippmann, Adeline Buffet, Kathrin Pflaum, Anita Ehnes, Anca Ciobanu, Oliver H Seeck
A new method for fast x-ray reflectivity data acquisition is presented. The method is based on a fast rotating, slightly tilted sample reflecting to a stationary mounted position sensitive detector and it allows for measurements of reflectivity curves in a quarter of a second. The resolution in q-space mainly depends on the beam properties and the pixel size of the detector. Maximum qz-value of 1 Å(-1) can be achieved. The time-temperature depending structure changes of poly(N-isopropylacrylamide) thin films were investigated in situ by applying the fast-reflectivity setup...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910314/a-pulse-front-tilt-compensated-streaked-optical-spectrometer-with-high-throughput-and-picosecond-time-resolution
#6
J Katz, R Boni, R Rivlis, C Muir, D H Froula
A high-throughput, broadband optical spectrometer coupled to the Rochester optical streak system equipped with a Photonis P820 streak tube was designed to record time-resolved spectra with 1-ps time resolution. Spectral resolution of 0.8 nm is achieved over a wavelength coverage range of 480 to 580 nm, using a 300-groove/mm diffraction grating in conjunction with a pair of 225-mm-focal-length doublets operating at an f/2.9 aperture. Overall pulse-front tilt across the beam diameter generated by the diffraction grating is reduced by preferentially delaying discrete segments of the collimated input beam using a 34-element reflective echelon optic...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27909929/signal-to-noise-ratio-and-dose-to-the-lens-of-the-eye-for-computed-tomography-examination-of-the-brain-using-an-automatic-tube-current-modulation-system
#7
Supawitoo Sookpeng, Chitsanupong Butdee
PURPOSE: The study aimed to evaluate the image quality in terms of signal-to-noise ratio (SNR) and dose to the lens of the eye and the other nearby organs from the CT brain scan using an automatic tube current modulation (ATCM) system with or without CT gantry tilt is needed. METHODS: An anthropomorphic phantom was scanned with different settings including use of different ATCM, fixed tube current time product (mAs) settings and degree angles of gantry tilt. Gafchromic film XR-QA2 was used to measure absorbed dose of the organs...
December 2, 2016: Emergency Radiology
https://www.readbyqxmd.com/read/27909534/efficacy-and-safety-of-implantable-loop-recorder-experience-of-a-center
#8
Inês Silveira, Maria João Sousa, Nuno Antunes, Vânia Silva, Carla Roque, António Pinheiro-Vieira, Vítor Lagarto, António Hipólito-Reis, André Luz, Severo Torres
Introduction: Symptoms like syncope or palpitations frequently present a diagnostic challenge. An implantable loop recorder (ILR) is an important aid in the management of these patients. Methods: A retrospective study of patients that underwent ILR implantation from November 2007 to 2014. For each patient the indication for implantation, baseline characteristics, previous study, complications, recorded tracing and interventions were evaluated. Results: A total of 62 patients were included, 50% men, with a mean age of 62...
August 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909502/combined-diagnostic-yield-of-tilt-table-test-and-implantable-loop-recorder-to-identify-patients-affected-by-severe-clinical-presentation-of-neurally-mediated-reflex-syncope-who-could-respond-to-cardiac-pacing
#9
Tomaino M, Unterhuber M, Sgobino P, Pescoller F, Manfrin M, Rauhe W
In this study we wanted to verify the diagnostic value of tilt table test (TTT) to predict the efficacy of cardiac pacing (PM) for preventing recurrences of neurally mediated reflex syncope (NMS) in patients with cardioinhibitory activity (CI) documented by implantable loop recorder (ILR). Among patients selected by ILR in the context of severe clinical presentation of NMS, we analysed those who underwent PM implantation. In this observational and retrospective study we wanted to verify the results of TTT in the groups of treated patients with and without recurrences...
April 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909418/risk-and-ambiguity-in-information-seeking-eye-gaze-patterns-reveal-contextual-behavior-in-dealing-with-uncertainty
#10
Peter Wittek, Ying-Hsang Liu, Sándor Darányi, Tom Gedeon, Ik Soo Lim
Information foraging connects optimal foraging theory in ecology with how humans search for information. The theory suggests that, following an information scent, the information seeker must optimize the tradeoff between exploration by repeated steps in the search space vs. exploitation, using the resources encountered. We conjecture that this tradeoff characterizes how a user deals with uncertainty and its two aspects, risk and ambiguity in economic theory. Risk is related to the perceived quality of the actually visited patch of information, and can be reduced by exploiting and understanding the patch to a better extent...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27909402/upright-perception-and-ocular-torsion-change-independently-during-head-tilt
#11
Jorge Otero-Millan, Amir Kheradmand
We maintain a stable perception of the visual world despite continuous movements of our eyes, head and body. Perception of upright is a key aspect of such orientation constancy. Here we investigated whether changes in upright perception during sustained head tilt were related to simultaneous changes in torsional position of the eyes. We used a subjective visual vertical (SVV) task, modified to track changes in upright perception over time, and a custom video method to measure ocular torsion simultaneously. We tested 12 subjects in upright position, during prolonged (~15 min) lateral head tilts of 20 degrees, and also after the head returned to upright position...
2016: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/27908098/communication-stiffening-of-dilute-alcohol-and-alkane-mixtures-with-water
#12
Henry S Ashbaugh, J Wesley Barnett, Alexander Saltzman, Mae E Langrehr, Hayden Houser
We probe the anomalous compressibilities of dilute mixtures of alcohols and alkane gases in water using molecular simulations. The response to increasing solute concentration depends sensitively on temperature, with the compressibility decreasing upon solute addition at low temperatures and increasing at elevated temperatures. The thermodynamic origin of stiffening is directly tied to the solute's partial compressibility, which is negative at low temperatures and rises above water's compressibility with increasing temperature...
November 28, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/27907143/increased-exploration-capacity-promotes-group-fission-in-gregarious-foraging-herbivores
#13
Sophie Lardy, Daniel Fortin, Olivier Pays
Many gregarious species display rapid fission-fusion dynamics with individuals frequently leaving their groups to reunite or to form new ones soon after. The adaptive value of such ephemeral associations might reflect a frequent tilt in the balance between the costs and benefits of maintaining group cohesion. The lack of information on the short-term advantages of group fission, however, hampers our understanding of group dynamics. We investigated the effect of group fission on area-restricted search, a search tactic that is commonly used when food distribution is spatially autocorrelated...
2016: PloS One
https://www.readbyqxmd.com/read/27906943/fluoroscopic-sacroiliac-joint-injection-is-oblique-angulation-really-necessary
#14
Sandeep Khuba, Anil Agarwal, Sujeet Gautam, Sanjay Kumar
BACKGROUND: The conventional technique for sacroiliac (SI) joint injection involves aligning the anterior and posterior aspects of the SI joint under fluoroscopic guidance and then entering the SI joint in the most caudal aspect. OBJECTIVE: We wish to highlight that there is no added advantage to aligning both the anterior and posterior joint lines of the SI joint as it is time consuming, associated with additional radiation exposure, and may make the entry into the posterior SI joint technically more difficult...
November 2016: Pain Physician
https://www.readbyqxmd.com/read/27906744/reliability-of-sagittal-spinopelvic-alignment-measurements-after-total-hip-arthroplasty
#15
Katri Pernaa, Matti Seppänen, Keijo Mäkelä, Mikhail Saltychev
STUDY DESIGN: This is a observational study. OBJECTIVE: To evaluate the reliability of measuring sagittal spinopelvic alignment after hip arthroplasty. SUMMARY OF BACKGROUND DATA: Pelvic incidence (PI), sacral slope (SS), pelvic tilt (PT), and lumbar lordosis (LL) are widely used in planning the treatment of people with spinal and hip disorders. Previously, these measures have proved reliable when hip heads are intact. Thus far, it is not known whether they are also reliable after total hip replacement...
November 30, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27906328/interdigitated-pixel-electrodes-with-alternating-tilts-for-fast-fringe-field-switching-of-liquid-crystals
#16
Tae-Hoon Choi, Jae-Hyeon Woo, Yeongyu Choi, Tae-Hoon Yoon
We propose an interdigitated pixel electrode structure with alternating tilts for fast fringe-field switching of liquid crystals (LCs). In contrast to an LC cell, where the pixel electrodes are parallel to the LC alignment direction, this device does not require a non-zero pretilt angle, owing to an obliquely applied electric field; thus, it can retain a much wider viewing angle by aligning the LCs without a pretilt. In addition to a short response time and wide viewing angle, the proposed device allows a much larger deviation of the LC alignment direction, which is essential for mass production...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27906229/aperture-coded-confocal-profilometry
#17
Jaka Pribošek, Janez Diaci, Stefan Sinzinger
This Letter introduces a novel principle to the confocal profilometry for simultaneous measurement of surface position and tilt. The principle relies on an angle-dependent coding of the illumination of the surface-under-test, achieved by dividing the pupil into several subapertures. The reflected light is decoded to perform an angle-resolved analysis by measuring the intensity contributions of each individual subaperture. By comparing their contributions, additional information of surface tilt can be inferred...
December 1, 2016: Optics Letters
https://www.readbyqxmd.com/read/27906210/graphene-induced-unique-polarization-tuning-properties-of-excessively-tilted-fiber-grating
#18
Biqiang Jiang, Guolu Yin, Kaiming Zhou, Changle Wang, Xuetao Gan, Jianlin Zhao, Lin Zhang
By exploiting the polarization-sensitive coupling effect of graphene with the optical mode, we investigate the polarization modulation properties of a hybrid waveguide of graphene-integrated excessively tilted fiber grating (Ex-TFG). The theoretical analysis and experimental results demonstrate that the real and imaginary parts of complex refractive index of few-layer graphene exhibit different effects on transverse electric (TE) and transverse magnetic (TM) cladding modes of the Ex-TFG, enabling stronger absorption in the TE mode and more wavelength shift in the TM mode...
December 1, 2016: Optics Letters
https://www.readbyqxmd.com/read/27904980/a-resolved-two-way-coupled-cfd-6-dof-approach-for-predicting-embolus-transport-and-the-embolus-trapping-efficiency-of-ivc-filters
#19
Kenneth I Aycock, Robert L Campbell, Keefe B Manning, Brent A Craven
Inferior vena cava (IVC) filters are medical devices designed to provide a mechanical barrier to the passage of emboli from the deep veins of the legs to the heart and lungs. Despite decades of development and clinical use, IVC filters still fail to prevent the passage of all hazardous emboli. The objective of this study is to (1) develop a resolved two-way computational model of embolus transport, (2) provide verification and validation evidence for the model, and (3) demonstrate the ability of the model to predict the embolus-trapping efficiency of an IVC filter...
November 30, 2016: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/27904790/current-concepts-in-the-treatment-of-gross-patellofemoral-instability
#20
Grant Buchanan, LeeAnne Torres, Brian Czarkowski, Charles E Giangarra
: Patellofemoral instability is a painful and commonly recurring condition, which often must be managed surgically. Diagnosis can be aided by the use of a variety of physical exam signs, such as the Q angle, Beighton hypermobility score, glide test, J sign, patellar tilt test, and apprehension test. Imaging modalities including x-ray, CT, and MRI guide both diagnosis and management by revealing trochlear dysplasia, bony malalignment, and ligamentous injury that contribute to instability...
December 2016: International Journal of Sports Physical Therapy
keyword
keyword
41666
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"