keyword
MENU ▼
Read by QxMD icon Read
search

joint position error

keyword
https://www.readbyqxmd.com/read/28341590/guidelines-for-validation-of-next-generation-sequencing-based-oncology-panels-a-joint-consensus-recommendation-of-the-association-for-molecular-pathology-and-college-of-american-pathologists
#1
REVIEW
Lawrence J Jennings, Maria E Arcila, Christopher Corless, Suzanne Kamel-Reid, Ira M Lubin, John Pfeifer, Robyn L Temple-Smolkin, Karl V Voelkerding, Marina N Nikiforova
Next-generation sequencing (NGS) methods for cancer testing have been rapidly adopted by clinical laboratories. To establish analytical validation best practice guidelines for NGS gene panel testing of somatic variants, a working group was convened by the Association of Molecular Pathology with liaison representation from the College of American Pathologists. These joint consensus recommendations address NGS test development, optimization, and validation, including recommendations on panel content selection and rationale for optimization and familiarization phase conducted before test validation; utilization of reference cell lines and reference materials for evaluation of assay performance; determining of positive percentage agreement and positive predictive value for each variant type; and requirements for minimal depth of coverage and minimum number of samples that should be used to establish test performance characteristics...
March 21, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28321187/steps-to-health-in-cognitive-aging-effects-of-physical-activity-on-spatial-attention-and-executive-control-in-the-elderly
#2
Giancarlo Condello, Roberta Forte, Simone Falbo, John B Shea, Angela Di Baldassarre, Laura Capranica, Caterina Pesce
The purpose of this study was to investigate whether physical activity (PA) habits may positively impact performance of the orienting and executive control networks in community-dwelling aging individuals and diabetics, who are at risk of cognitive dysfunction. To this aim, we tested cross-sectionally whether age, ranging from late middle-age to old adulthood, and PA level independently or interactively predict different facets of the attentional performance. Hundred and thirty female and male individuals and 22 adults with type 2 diabetes aged 55-84 years were recruited and their daily PA (steps) was objectively measured by means of armband monitors...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28320423/in-vivo-estimation-of-the-shoulder-joint-center-of-rotation-using-magneto-inertial-sensors-mri-based-accuracy-and-repeatability-assessment
#3
M Crabolu, D Pani, L Raffo, M Conti, P Crivelli, A Cereatti
BACKGROUND: The human gleno-humeral joint is normally represented as a spherical hinge and its center of rotation is used to construct humerus anatomical axes and as reduction point for the computation of the internal joint moments. The position of the gleno-humeral joint center (GHJC) can be estimated by recording ad hoc shoulder joint movement following a functional approach. In the last years, extensive research has been conducted to improve GHJC estimate as obtained from positioning systems such as stereo-photogrammetry or electromagnetic tracking...
March 21, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28318316/bilateral-proprioceptive-evaluation-in-individuals-with-unilateral-chronic-ankle-instability
#4
Andreia S P Sousa, João Leite, Bianca Costa, Rubim Santos
CONTEXT: Despite extensive research on chronic ankle instability, the findings regarding proprioception have been conflicting and focused only on the injured limb. Also, the different components of proprioception have been evaluated in isolation. OBJECTIVE: To evaluate bilateral ankle proprioception in individuals with unilateral ankle instability. DESIGN: Cohort study. SETTING: Research laboratory center in a university...
March 20, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28316255/a-bayesian-double-fusion-model-for-resting-state-brain-connectivity-using-joint-functional-and-structural-data
#5
Hakmook Kang, Hernando Ombao, Christopher Fonnesbeck, Zhaohua Ding, Victoria L Morgan
Current approaches separately analyze concurrently acquired diffusion tensor imaging (DTI) and functional magnetic resonance imaging (fMRI) data. The primary limitation of these approaches is that they do not take advantage of the information from DTI that could potentially enhance estimation of resting state functional connectivity (FC) between brain regions. To overcome this limitation, we develop a Bayesian hierarchical spatio-temporal model that incorporates structural connectivity into estimating FC. In our proposed approach, structural connectivity (SC) based on DTI data is used to construct an informative prior for functional connectivity based on resting state fMRI data via the Cholesky decomposition...
March 19, 2017: Brain Connectivity
https://www.readbyqxmd.com/read/28302125/joint-longitudinal-data-analysis-in-detecting-determinants-of-cd4-cell-count-change-and-adherence-to-highly-active-antiretroviral-therapy-at-felege-hiwot-teaching-and-specialized-hospital-north-west-ethiopia-amhara-region
#6
Awoke Seyoum, Principal Ndlovu, Zewotir Temesgen
BACKGROUND: Adherence and CD4 cell count change measure the progression of the disease in HIV patients after the commencement of HAART. Lack of information about associated factors on adherence to HAART and CD4 cell count reduction is a challenge for the improvement of cells in HIV positive adults. The main objective of adopting joint modeling was to compare separate and joint models of longitudinal repeated measures in identifying long-term predictors of the two longitudinal outcomes: CD4 cell count and adherence to HAART...
March 16, 2017: AIDS Research and Therapy
https://www.readbyqxmd.com/read/28290704/predicting-manual-therapy-treatment-success-in-patients-with-chronic-ankle-instability-improving-self-reported-function
#7
Eric A Wikstrom, Patrick O McKeon
CONTEXT: Therapeutic modalities that stimulate sensory receptors around the foot-ankle complex improve chronic ankle instability (CAI)-associated impairments. However, not all patients have equal responses to these modalities. Identifying predictors of treatment success could improve clinician efficiency when treating patients with CAI. OBJECTIVE: To conduct a response analysis on existing data to identify predictors of improved self-reported function in patients with CAI...
March 14, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28288610/cervical-spine-reposition-errors-after-cervical-flexion-and-extension
#8
Xu Wang, René Lindstroem, Niels Peter Bak Carstens, Thomas Graven-Nielsen
BACKGROUND: Upright head and neck position has been frequently applied as baseline for diagnosis of neck problems. However, the variance of the position after cervical motions has never been demonstrated. Thus, it is unclear if the baseline position varies evenly across the cervical joints. The purpose was to assess reposition errors of upright cervical spine. METHODS: Cervical reposition errors were measured in twenty healthy subjects (6 females) using video-fluoroscopy...
March 13, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28286578/validity-of-the-microsoft-kinect-system-in-assessment-of-compensatory-stepping-behavior-during-standing-and-treadmill-walking
#9
Guy Shani, Amir Shapiro, Goldstein Oded, Kagan Dima, Itshak Melzer
BACKGROUND: Rapid compensatory stepping plays an important role in preventing falls when balance is lost; however, these responses cannot be accurately quantified in the clinic. The Microsoft Kinect™ system provides real-time anatomical landmark position data in three dimensions (3D), which may bridge this gap. METHODS: Compensatory stepping reactions were evoked in 8 young adults by a sudden platform horizontal motion on which the subject stood or walked on a treadmill...
2017: European Review of Aging and Physical Activity
https://www.readbyqxmd.com/read/28285744/dynamic-time-warping-compared-to-established-methods-for-validation-of-musculoskeletal-models
#10
Martin Gaspar, Bastian Welke, Frank Seehaus, Christof Hurschler, Michael Schwarze
By means of Multi-Body musculoskeletal simulation, important variables such as internal joint forces and moments can be estimated which cannot be measured directly. Validation can ensued by qualitative or by quantitative methods. Especially when comparing time-dependent signals, many methods do not perform well and validation is often limited to qualitative approaches. The aim of the present study was to investigate the capabilities of the Dynamic Time Warping (DTW) algorithm for comparing time series, which can quantify phase as well as amplitude errors...
March 4, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28269541/estimation-of-joint-center-and-measurement-of-finger-motion-by-inertial-sensors
#11
Keisuke Kitano, Akihito Ito, Nobutaka Tsujiuchi, Shigeru Wakida
The authors developed a wearable finger motion measurement system using inertial and geomagnetic sensors. Using this system, motion and posture of the hands and fingers can be measured. However, the joint center and segment axis cannot be accurately measured in a previous study using the sensors. Therefore, the authors proposed a method of estimating the joint center and segment lengths. This method utilizes the fact that the calculation formula of the rotational acceleration in the sensor's coordinate system is the vector product...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269303/a-preliminary-study-for-quantitative-assessment-of-upper-limb-proprioception
#12
Sara Contu, Asif Hussain, Lorenzo Masia, Domenico Campolo
Proprioception, or sense of position and movement of the body, strongly correlates with motor recovery of the hemiplegic arm. The evaluation of the awareness of the location of joints in space involves measuring the accuracy of joint-angle replication. Robotic devices allow an accurate manipulation of joint movements necessary to assess proprioceptive status. This study evaluated the proprioceptive performance of healthy subjects by mean of the H-Man, a planar robot designed for upper-limb rehabilitation to gather preliminary normative data for neurorehabilitation applications...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28264689/rapid-diagnostic-tests-failing-to-detect-plasmodium-falciparum-infections-in-eritrea-an-investigation-of-reported-false-negative-rdt-results
#13
Araia Berhane, Mulugeta Russom, Iyassu Bahta, Filmon Hagos, Michael Ghirmai, Selam Uqubay
BACKGROUND: Relatively large number of false-negative malaria rapid diagnostic test (RDT) results for microscopically confirmed Plasmodium falciparum cases were reported from five of the six administrative regions of Eritrea in 2015. This activated the Ministry of Health to conduct an initial exploratory investigation. The main objective of the investigation was to confirm the sensitivity of the RDTs in the field in microscopically confirmed malaria cases, identify the possible causes of the failure and recommend further actions to be taken...
March 6, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28259770/a-prospective-investigation-of-changes-in-the-sensorimotor-system-following-sports-concussion-an-exploratory-study
#14
Julie A Hides, Melinda M Franettovich Smith, M Dilani Mendis, Nigel A Smith, Andrew J Cooper, Julia Treleaven, Felix Leung, Andrew J Gardner, Paul McCrory, Nancy L Low Choy
BACKGROUND: Sports concussion is a risk for players involved in high impact, collision sports. Post-concussion, the majority of symptoms subside within 7-10 days, but can persist in 10-20% of athletes. Understanding the effects of sports concussion on sensorimotor systems could inform physiotherapy treatment. OBJECTIVE: To explore changes in sensorimotor function in the acute phase following sports concussion. DESIGN: Prospective cohort study...
February 24, 2017: Musculoskelet Sci Pract
https://www.readbyqxmd.com/read/28259613/biplane-fluoroscopy-for-hindfoot-motion-analysis-during-gait-a-model-based-evaluation
#15
Janelle A Cross, Benjamin D McHenry, Robert Molthen, Emily Exten, Taly Gilat Schmidt, Gerald F Harris
The purpose of this study was to quantify the accuracy and precision of a biplane fluoroscopy system for model-based tracking of in vivo hindfoot motion during over-ground gait. Gait was simulated by manually manipulating a cadaver foot specimen through a biplane fluoroscopy system attached to a walkway. Three 1.6-mm diameter steel beads were implanted into the specimen to provide marker-based tracking measurements for comparison to model-based tracking. A CT scan was acquired to define a gold standard of implanted bead positions and to create 3D models for model-based tracking...
March 1, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28237184/soft-tissue-displacement-over-pelvic-anatomical-landmarks-during-3-d-hip-movements
#16
V Camomilla, T Bonci, A Cappozzo
The position, in a pelvis-embedded anatomical coordinate system, of skin points located over the following anatomical landmarks (AL) was determined while the hip assumed different spatial postures: right and left anterior superior and posterior superior iliac spines, and the sacrum. Postures were selected as occurring during walking and during a flexion-extension and circumduction movement, as used to determine the hip joint centre position (star-arc movement). Five volunteers, characterised by a wide range of body mass indices (22-37), were investigated...
January 17, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28236117/3d-ultrasound-registration-based-visual-servoing-for-neurosurgical-navigation
#17
Oliver Zettinig, Benjamin Frisch, Salvatore Virga, Marco Esposito, Anna Rienmüller, Bernhard Meyer, Christoph Hennersperger, Yu-Mi Ryang, Nassir Navab
PURPOSE: We present a fully image-based visual servoing framework for neurosurgical navigation and needle guidance. The proposed servo-control scheme allows for compensation of target anatomy movements, maintaining high navigational accuracy over time, and automatic needle guide alignment for accurate manual insertions. METHOD: Our system comprises a motorized 3D ultrasound (US) transducer mounted on a robotic arm and equipped with a needle guide. It continuously registers US sweeps in real time with a pre-interventional plan based on CT or MR images and annotations...
February 24, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28227796/estimation-of-joint-center-and-measurement-of-finger-motion-by-inertial-sensors
#18
Keisuke Kitano, Akihito Ito, Nobutaka Tsujiuchi, Shigeru Wakida, Keisuke Kitano, Akihito Ito, Nobutaka Tsujiuchi, Shigeru Wakida, Akihito Ito, Shigeru Wakida, Keisuke Kitano, Nobutaka Tsujiuchi
The authors developed a wearable finger motion measurement system using inertial and geomagnetic sensors. Using this system, motion and posture of the hands and fingers can be measured. However, the joint center and segment axis cannot be accurately measured in a previous study using the sensors. Therefore, the authors proposed a method of estimating the joint center and segment lengths. This method utilizes the fact that the calculation formula of the rotational acceleration in the sensor's coordinate system is the vector product...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227540/a-preliminary-study-for-quantitative-assessment-of-upper-limb-proprioception
#19
Sara Contu, Asif Hussain, Lorenzo Masia, Domenico Campolo, Sara Contu, Asif Hussain, Lorenzo Masia, Domenico Campolo, Asif Hussain, Lorenzo Masia, Sara Contu, Domenico Campolo
Proprioception, or sense of position and movement of the body, strongly correlates with motor recovery of the hemiplegic arm. The evaluation of the awareness of the location of joints in space involves measuring the accuracy of joint-angle replication. Robotic devices allow an accurate manipulation of joint movements necessary to assess proprioceptive status. This study evaluated the proprioceptive performance of healthy subjects by mean of the H-Man, a planar robot designed for upper-limb rehabilitation to gather preliminary normative data for neurorehabilitation applications...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28203459/association-of-age-on-cervical-joint-position-error
#20
Khalid A Alahmari, Ravi Shankar Reddy, Paul S Silvian, Irshad Ahmad, Venkata Nagaraj Kakaraparthi, Mohammed Mehtab Alam
This study quantitatively assesses the association between age and cervical joint position error (JPE) and compares JPE between young and older asymptomatic subjects. Subjects (n = 230) ranging in age from 17 to 70 years volunteered to participate in the study. Cervical JPE was measured for all subjects with the active movement angle reproduction test in degrees using a digital inclinometer; testing was done in all cervical movement directions (flexion, extension, side-bending right and left, rotation right and left)...
May 2017: Journal of Advanced Research
keyword
keyword
61656
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"