Read by QxMD icon Read

Table Motion

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...
April 13, 2018: ISA Transactions
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
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
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
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
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
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...
March 1, 2018: Surgical Innovation
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
Atsushi Takagi, Francesco Usai, Gowrishankar Ganesh, Vittorio Sanguineti, Etienne Burdet
To move a hard table together, humans may coordinate by following the dominant partner's motion [1-4], but this strategy is unsuitable for a soft mattress where the perceived forces are small. How do partners readily coordinate in such differing interaction dynamics? To address this, we investigated how pairs tracked a target using flexion-extension of their wrists, which were coupled by a hard, medium or soft virtual elastic band. Tracking performance monotonically increased with a stiffer band for the worse partner, who had higher tracking error, at the cost of the skilled partner's muscular effort...
March 2018: PLoS Computational Biology
Tsubasa Enosaki, Hideharu Miura, Shintarou Tsuda, Atsushi Kawakubo, Masahiro Hayata, Shuichi Ozawa, Kiyoshi Yamada, Yasushi Nagata
It is important for high-precision radiation therapy that tracking accuracy in dynamic tumor tracking (DTT) using the gimbal X-ray head. We evaluated the tracking accuracy under various respiratory patterns differ from a correlation model [four-dimensional model (4D-model)] in real-time using a digital camera. A sheet of paper with luminous line was placed on the programmable respiratory motion table (CIRS Inc.) and operated with the laser projector. The luminous line was defined as a target and the laser was defined as a gimbal...
2018: Nihon Hoshasen Gijutsu Gakkai Zasshi
Ziemowit Bańkosz, Sławomir Winiarski
The aims of this study were to evaluate movement patterns of topspin forehand, to define the main principles of performing this shot, and to determine the essential differences in individual types of topspin forehand. In total, 10 female high-level athletes participated in this study. The BTS analysis system was used with a novel model for the range-of-motion measurement. An acoustic sensor was attached to the racket for identification of a ball-racket contact. Players, performing topspin forehand, attempt to achieve maximal racket velocity based on the principles of proximal-to-distal sequences and summation of speed with a stretch-shortening character of cycle...
March 9, 2018: Motor Control
Philippe Robin, David Bourhis, Brieuc Bernard, Ronan Abgral, Solène Querellou, Alexandra Le Duc-Pennec, Pierre-Yves Le Roux, Pierre-Yves Salaün
Objective: Respiratory motion in18 F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) induces blurred images, leading to errors in location and quantification for lung and abdominal lesions. Various methods have been developed to correct for these artifacts, and most of current PET/CT scanners are equipped with a respiratory gating system. However, they are not routinely performed because their use is time-consuming. The aim of this study is to assess the feasibility and quantitative impact of a systematic respiratory-gated acquisition in unselected patients referred for FDG PET/CT, without increasing acquisition time...
2018: Frontiers in Medicine
M Bohnsack
OBJECTIVE: Complete arthroscopic decompression of the impinging subspinal soft tissues and resection of the hypertrophic bone formation between the anterior hip capsule and the anterior inferior iliac spine (AIIS) or decompression of a hypertrophic AIIS. INDICATIONS: Painful anterior hip impingement and decreased hip flexion following a hypertrophic osseous subspinal deformation. CONTRAINDICATIONS: No clinical symptoms or decreased anterior hip function despite radiological osseous subspinal hip impingement...
April 2018: Operative Orthopädie und Traumatologie
Christian Scholz, Michael Engel, Thorsten Pöschel
Biological organisms and artificial active particles self-organize into swarms and patterns. Open questions concern the design of emergent phenomena by choosing appropriate forms of activity and particle interactions. A particularly simple and versatile system are 3D-printed robots on a vibrating table that can perform self-propelled and self-spinning motion. Here we study a mixture of minimalistic clockwise and counter-clockwise rotating robots, called rotors. Our experiments show that rotors move collectively and exhibit super-diffusive interfacial motion and phase separate via spinodal decomposition...
March 2, 2018: Nature Communications
Biplab Sarkar, Jyotirmoy Ray, Tharmar Ganesh, Arjunan Manikandan, Anusheel Munshi, Sasikumar Rathinamuthu, Harpreet Kaur, Satheeshkumar Anbazhagan, Upendra Kumar Giri, Soumya Roy, Kanan Jassal, Bidhu Kalyan Mohanti
The aim of this article is to derive and verify mathematical formulation for the reduction of the six dimensional (6D) positional inaccuracies of patients (lateral, longitudinal, vertical, pitch, roll and yaw) to three-dimensional (3D) linear shifts. 
 The formulation was mathematically and experimentally tested and verified for 169 stereotactic radiotherapy patients. The mathematical verification involves the comparison of any ( one) of the calculated rotational coordinate with the corresponding value from the 6D shifts obtained by cone beam computed tomography (CBCT)...
February 26, 2018: Physics in Medicine and Biology
Chet R Rees, Barrett W C Duncan
Many interventionalists face physical challenges almost daily for years or decades. The burden of assuming awkward positions while carrying extra weight can take its toll on the musculoskeletal system to such an extent that the career is ended or modified to exclude procedural aspects. The proliferation of lighter aprons has unfortunately resulted in reduced protection with poor correlation of protection to labeling due to the inadequacies of testing methods for nonlead materials. The protective quality of the non-leads is not superior to lead-containing composites on a weight basis, and the user no longer knows how well they are protected unless buying aprons containing lead...
March 2018: Techniques in Vascular and Interventional Radiology
Alessandro Mirra, Micaël David Klopfenstein Bregger, Olivier Louis Levionnois
A 15-year-old Selle Francais gelding was presented to the equine referral hospital for treatment of a left guttural pouch mycosis previously diagnosed. After induction, the horse was shortly hoisted by all four feet, moved on a padded surgical table, and positioned in right lateral recumbency. In order to reduce the risk of bleeding during surgical manipulation of the carotid and maxillary arteries, a mean arterial pressure between 60 and 70 mmHg was targeted. After surgery, the horse was moved in a padded recovery box keeping the same lateral recumbency...
2018: Frontiers in Veterinary Science
Hyundo Choi, Keehong Seo, Seungyong Hyung, Youngbo Shim, Soo-Chul Lim
In this paper, we propose a compact force sensor system for a hip-mounted exoskeleton for seniors with difficulties in walking due to muscle weakness. It senses and monitors the delivered force and power of the exoskeleton for motion control and taking urgent safety action. Two FSR (force-sensitive resistors) sensors are used to measure the assistance force when the user is walking. The sensor system directly measures the interaction force between the exoskeleton and the lower limb of the user instead of a previously reported force-sensing method, which estimated the hip assistance force from the current of the motor and lookup tables...
February 13, 2018: Sensors
Amanda McArthur
Using conversation analysis and a dataset of 171 video recordings of US primary care encounters (2003-2005), this paper examines patients' unsolicited pain informings - e.g. "that hurts" - during the physical examination phase of acute care visits. I argue that when patients experience pain in a physical exam but have not been asked a question like "does that hurt?", they face an interactional dilemma. Having presented their health problem to a doctor, they have tacitly set in motion epistemic and interactional asymmetries through which the doctor investigates the problem on their behalf...
January 16, 2018: Social Science & Medicine
Daniel P Nicolella, Lorena Torres-Ronda, Kase J Saylor, Xavi Schelling
This study aimed to determine the intra- and inter-device accuracy and reliability of wearable athletic tracking devices, under controlled laboratory conditions. A total of nineteen portable accelerometers (Catapult OptimEye S5) were mounted to an aluminum bracket, bolted directly to an Unholtz Dickie 20K electrodynamic shaker table, and subjected to a series of oscillations in each of three orthogonal directions (front-back, side to side, and up-down), at four levels of peak acceleration (0.1g, 0.5g, 1.0g, and 3...
2018: PloS One
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"