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https://www.readbyqxmd.com/read/29890509/detecting-intention-to-execute-the-next-movement-while-performing-current-movement-from-eeg-using-global-optimal-constrained-ica
#1
Elnaz Eilbeigi, Seyed Kamaledin Setarehdan
BACKGROUND: Brain-computer interfaces (BCIs) are a promising tool in neurorehabilitation. The intention to perform a motor action can be detected from brain signals and used to control robotic devices. Most previous studies have focused on the starting of movements from a resting state, while in daily life activities, motions occur continuously and the neural activities correlated to the evolving movements are yet to be investigated. METHOD: First we investigate the existence of neural correlates of intention to replace an object on the table during a holding phase...
May 26, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29889958/surgery-at-sea-the-effect-of-simulated-high-sea-states-on-surgical-performance
#2
Eric Pierce, Renato Rapada, Penelope Anne Herder, Anthony J LaPorta, Tuan N Hoang, Mathew Pena, Jeff Blankenship, Jeff Kiser, Sarah Ashley Catlin
BACKGROUND: The US Navy initiated design concepts for a Medical Mission Module Support Container (M3SC), a mobile operating room capable of rapid installation aboard maneuverable ships within proximity of active combat units. The M3SC provides an alternative echelon of care in the current trauma system by decreasing the time between point of injury, arrival, and surgical intervention. The mobile ships used as M3SC platforms, however, are more susceptible to oceanic conditions that can induce detrimental physiologic motion sickness in medical personnel and patients aboard the vessels...
2018: Journal of Special Operations Medicine: a Peer Reviewed Journal for SOF Medical Professionals
https://www.readbyqxmd.com/read/29885720/elongation-of-the-surface-of-the-spine-during-lifting-and-lowering-and-implications-for-design-of-an-upper-body-industrial-exoskeleton
#3
Kirsten Huysamen, Valerie Power, Leonard O'Sullivan
The aim of this study was to assess the elongation of the skin surface of the spine for simulated industrial lifting and lowering tasks to aid the design of industrial exoskeletons worn on the back. Eighteen male participants lifted and lowered a box of varying loads (5 kg, 10 kg, 15 kg) using three techniques (squat, semi-squat, stooped) from the ground to a table. Motion capture sensors attached to the spine from C7 to S1 measured movement. Stoop lifting involved significantly more elongation (mean 71...
October 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29868250/comparing-the-biomechanical-characteristics-between-squat-and-standing-serves-in-female-table-tennis-athletes
#4
Changxiao Yu, Shirui Shao, Julien S Baker, Yaodong Gu
Background: The table tennis serve involves complex spatial movements combined with biomechanial characteristics. Although the differences in lower-limb biomechanial characteristics to a great extent influence the translational and spinning velocity of the ball when using the different styles of table tennis serve, few researchers have studied their mechanics. Therefore, the aim of this study was to investigate the differences in lower-limb activity between the squat and standing serves during a table tennis short serve...
2018: PeerJ
https://www.readbyqxmd.com/read/29866341/dosimetric-impact-of-hysteresis-on-lung-cancer-tomotherapy-a-moving-phantom-study
#5
Ke Zhang, Jianrong Dai, Zhihui Hu, Chuanmeng Niu
PURPOSE: To investigate the dosimetric impact of hysteresis on lung cancer tomotherapy. METHODS: Measurements were acquired using MapCheck with an XY4D motion simulation table. Six hysteresis states (0, π/32, π/16, π/8, 3π/16, and π/4) were considered with sinusoidal motions in the superior-inferior and left-right orientations. The measured data were analyzed both globally (from all detectors) and structure-by-structure in the measurement plane. The dose difference (DD) analysis method with local normalization in the absolute dose mode with a DD threshold of 6 cGy was adopted to analyze each hysteresis vs...
May 2018: Physica Medica: PM
https://www.readbyqxmd.com/read/29850268/postural-tachycardia-syndrome-and-vasovagal-syncope-a-hidden-case-of-obstructive-cardiomyopathy-without-severe-septal-hypertrophy
#6
Kenneth A Mayuga, Natalie Ho, Robert W Shields, Paul Cremer, L Leonardo Rodriguez
A 36-year-old female with symptoms of orthostatic intolerance and syncope was diagnosed with vasovagal syncope on a tilt table test and with postural tachycardia syndrome (POTS) after a repeat tilt table test. However, an echocardiogram at our institution revealed obstructive cardiomyopathy without severe septal hypertrophy, with a striking increase in left ventricular outflow tract gradient from 7 mmHg at rest to 75 mmHg during Valsalva, with a septal thickness of only 1.3 cm. Cardiac MRI showed an apically displaced multiheaded posteromedial papillary muscle with suggestion of aberrant chordal attachments to the anterior mitral leaflet contributing to systolic anterior motion of the mitral valve...
2018: Case Reports in Cardiology
https://www.readbyqxmd.com/read/29789250/sectioning-of-the-anterior-intermeniscal-ligament-changes-knee-loading-mechanics
#7
Matthieu Ollivier, Julie Falguières, Martine Pithioux, Philippe Boisrenoult, Phillippe Beaufils, Nicolas Pujol
PURPOSE: The purpose of this cadaver research project was to describe the biomechanical consequences of anterior intermeniscal ligament (AIML) resection on menisci function under load conditions in full extension and 60° of flexion. METHODS: Ten unpaired fresh frozen cadaveric knees were dissected leaving the knee joint intact with its capsular and ligamentous attachments. The femur and tibia were sectioned 15 cm from the joint line and mounted onto the loading platform...
May 19, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29777930/experimental-and-theoretical-study-of-fingerprint-spectra-of-2-4-fluorophenyl-benzimidazole-and-2-4-chlorophenyl-benzimidazole-in-terahertz-range
#8
Maojiang Song, Fei Yang, Liping Liu, Li Shen, Pengfei Hu, Caixia Su
Due to wide variety of biological and pharmacological activities of benzimidazole derivatives, the terahertz fingerprint spectra of 2-(4-fluorophenyl)benzimidazole and 2-(4-chlorophenyl)benzimidazole are researched by employing terahertz time-domain spectroscopy and density functional theory systematically. Although the substituent at the para position on the benzene moiety are the same family elements (F, Cl) in the periodic table, both experimental and theoretical results show that there are substantial differences in their fingerprint spectra in the range of 0...
May 10, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29769835/correlations-between-angular-velocities-in-selected-joints-and-velocity-of-table-tennis-racket-during-topspin-forehand-and-backhand
#9
Ziemowit Bańkosz, Sławomir Winiarski
The aim of this study was to determine the correlations between angular velocities in individual joints and racket velocity for different topspin forehand and backhand strokes in table tennis. Ten elite female table tennis players participated, presenting different kinds of topspin forehands and backhands - after a no-spin ball (FH1, BH1), after a backspin ball (FH2, BH2) and "heavy" topspin (FH3, BH3). Range of motion was measured with the BTS Smart-E (BTS Bioengineering, Milan, Italy) motion analysis system with a specially developed marker placement protocol for the upper body parts and an acoustic sensor attached to the racket to identify ball-racket contact...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29760592/4d-modeling-in-a-gimbaled-linear-accelerator-by-using-gold-anchor-markers
#10
Hideharu Miura, Shuichi Ozawa, Takaaki Matsuura, Atsushi Kawakubo, Fumika Hosono, Kiyoshi Yamada, Yasushi Nagata
Purpose: The purpose of this study was to verify whether the dynamic tumor tracking (DTT) feature of a Vero4DRT system performs with 10-mm-long and 0.28 mm diameter gold anchor markers. Methods: Gold anchor markers with a length of 10 mm and a diameter of 0.28 mm were used. Gold anchor markers were injected with short and long types into bolus material. These markers were sandwiched by a Tough Water (TW) phantom in the bolus material. For the investigation of 4-dimensional (4D) modeling feasibility under various phantom thicknesses, the TW phantom was added at 2 cm intervals (in upper and lower each by 1 cm)...
May 2018: Reports of Practical Oncology and Radiotherapy
https://www.readbyqxmd.com/read/29713457/the-regional-effect-of-spinal-manipulation-on-the-pressure-pain-threshold-in-asymptomatic-subjects-a-systematic-literature-review
#11
REVIEW
Margaux Honoré, Charlotte Leboeuf-Yde, Olivier Gagey
Background: Spinal manipulation (SM) has been shown to have an effect on pain perception. More knowledge is needed on this phenomenon and it would be relevant to study its effect in asymptomatic subjects. Objectives: To compare regional effect of SM on pressure pain threshold (PPT) vs. sham, inactive control, mobilisation, another SM, and some type of physical therapy. In addition, we reported the results for the three different spinal regions. Method: A systematic search of literature was done using PubMed, Embase and Cochrane...
2018: Chiropractic & Manual Therapies
https://www.readbyqxmd.com/read/29701608/quantitative-myocardial-perfusion-from-static-cardiac-and-dynamic-arterial-ct
#12
Michael Bindschadler, Kelley R Branch, Adam M Alessio
Quantitative myocardial blood flow (MBF) estimation by dynamic contrast enhanced cardiac computed tomography (CT) requires multi-frame acquisition of contrast transit through the blood pool and myocardium to inform the arterial input and tissue response functions. Both the input and the tissue response functions for the entire myocardium are sampled with each acquisition. However, the long breath holds and frequent sampling can result in significant motion artifacts and relatively high radiation dose. To address these limitations, we propose and evaluate a new static cardiac and dynamic arterial (SCDA) quantitative MBF approach where 1) the input function is well sampled using either prediction from pre-scan timing bolus data or measured from dynamic thin slice "bolus tracking" acquisitions, and 2) the whole-heart tissue response data is limited to one contrast enhanced CT acquisition...
April 27, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29661548/modal-space-three-state-feedback-control-for-electro-hydraulic-servo-plane-redundant-driving-mechanism-with-eccentric-load-decoupling
#13
Jinsong Zhao, Zhipeng Wang, Chuanbi Zhang, Chifu Yang, Wenjie Bai, Zining Zhao
The shaking table based on electro-hydraulic servo parallel mechanism has the advantage of strong carrying capacity. However, the strong coupling caused by the eccentric load not only affects the degree of freedom space control precision, but also brings trouble to the system control. A novel decoupling control strategy is proposed, which is based on modal space to solve the coupling problem for parallel mechanism with eccentric load. The phenomenon of strong dynamic coupling among degree of freedom space is described by experiments, and its influence on control design is discussed...
June 2018: ISA Transactions
https://www.readbyqxmd.com/read/29658937/kinematic-analysis-using-3d-motion-capture-of-drinking-task-in-people-with-and-without-upper-extremity-impairments
#14
Margit Alt Murphy, Steve Murphy, Hanna C Persson, Ulla-Britt Bergström, Katharina Stibrant Sunnerhagen
Kinematic analysis is a powerful method for objective assessment of upper extremity movements in a three-dimensional (3D) space. Three-dimensional motion capture with an optoelectronic camera system is considered as golden standard for kinematic movement analysis and is increasingly used as outcome measure to evaluate the movement performance and quality after an injury or disease involving upper extremity movements. This article describes a standardized protocol for kinematic analysis of drinking task applied in individuals with upper extremity impairments after stroke...
March 28, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29658187/overview-of-intensive-care-unit-related-physical-and-functional-impairments-and-rehabilitation-related-devices
#15
REVIEW
Katie Koester, Heidi Troeller, Sara Panter, Emily Winter, Jayshil J Patel
Rehabilitation after critical illness requires a multidisciplinary effort. Nutrition support of critically ill patients aims to correct the imbalance between protein synthesis and protein degradation to maximize strengthening and muscle mass, whereas physical and occupational therapists focus on optimizing strength and mobility through functional activity to help intensive care (ICU) patients return to their precritical illness level of function and improve quality of life. Early mobility has become the new standard of care for ICU patients...
April 2018: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/29623867/image-based-food-portion-size-estimation-using-a-smartphone-without-a-fiducial-marker
#16
Yifan Yang, Wenyan Jia, Tamara Bucher, Hong Zhang, Mingui Sun
OBJECTIVE: Current approaches to food volume estimation require the person to carry a fiducial marker (e.g. a checkerboard card), to be placed next to the food before taking a picture. This procedure is inconvenient and post-processing of the food picture is time-consuming and sometimes inaccurate. These problems keep people from using the smartphone for self-administered dietary assessment. The current bioengineering study presents a novel smartphone-based imaging approach to table-side estimation of food volume which overcomes current limitations...
April 6, 2018: Public Health Nutrition
https://www.readbyqxmd.com/read/29603010/a-prospective-single-arm-study-on-the-use-of-the-da-vinci%C3%A2-table-motion-with-the-trumpf-ts7000dv-operating-table
#17
Luca Morelli, Matteo Palmeri, Tommaso Simoncini, Vito Cela, Alessandra Perutelli, Cesare Selli, Piero Buccianti, Francesco Francesca, Massimo Cecchi, Cristina Zirafa, Luca Bastiani, Alfred Cuschieri, Franca Melfi
BACKGROUND: The da Vinci® Table Motion (dVTM) comprises a combination of a unique operating table (Trumpf Medical™ TruSystem® 7000dV) capable of isocenter motion connected wirelessly with the da Vinci Xi® robotic platform, thereby enabling patients to be repositioned without removal of instruments and or undocking the robot. MATERIALS AND METHODS: Between May 2015 to October 2015, the first human use of dVTM was carried out in this prospective, single-arm, post-market study in the EU, for which 40 patients from general surgery (GS), urology (U), or gynecology (G) were enrolled prospectively...
March 30, 2018: Surgical Endoscopy
https://www.readbyqxmd.com/read/29578375/a-kinematic-comparison-between-long-line-and-cross-court-top-spin-forehand-in-competitive-table-tennis-players
#18
Ivan Malagoli Lanzoni, Sandro Bartolomei, Rocco Di Michele, Silvia Fantozzi
The aim of the present study was to compare the biomechanical characteristics of the table tennis top spin shot when played cross-court (CC) or long-line (LL) in competitive table tennis players. Seven national level players respectively completed 10 long-line and 10 cross-court top spin shots responding to a standard ball machine. A stereophotogrammetric system was used to track body segments while executing the motion. Significantly more flexed right knee and elbow angles were measured at the moment of maximum velocity of the racket (MMV) in LL...
March 26, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29577830/robotic-colorectal-resection-with-and-without-the-use-of-the-new-da-vinci-table-motion-a-case-matched-study
#19
Matteo Palmeri, Desirée Gianardi, Simone Guadagni, Gregorio Di Franco, Luca Bastiani, Niccolò Furbetta, Tommaso Simoncini, Cristina Zirafa, Franca Melfi, Piero Buccianti, Andrea Moglia, Alfred Cuschieri, Franco Mosca, Luca Morelli
BACKGROUND: The da Vinci Table Motion (dVTM) is a new device that enables patients to be repositioned with instruments in place within the abdomen, and without undocking the robot. The present study was designed to compare operative and short-term outcomes of patients undergoing colorectal cancer surgery with the da Vinci Xi system, with or without use of the dVTM. METHODS: Ten patients underwent robotic colorectal resection for cancer with the use of dVTM (Xi-dVTM group) between May 2015 and October 2015 at our center...
June 2018: Surgical Innovation
https://www.readbyqxmd.com/read/29577592/monitoring-frequency-of-intra-fraction-patient-motion-using-the-exactrac-system-for-linac-based-srs-treatments
#20
Benjamin C Lewis, William J Snyder, Siyong Kim, Taeho Kim
PURPOSE: The aim of this study was to investigate the intra-fractional patient motion using the ExacTrac system in LINAC-based stereotactic radiosurgery (SRS). METHOD: A retrospective analysis of 104 SRS patients with kilovoltage image-guided setup (Brainlab ExacTrac) data was performed. Each patient was imaged pre-treatment, and at two time points during treatment (1st and 2nd mid-treatment), and bony anatomy of the skull was used to establish setup error at each time point...
March 25, 2018: Journal of Applied Clinical Medical Physics
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