keyword
MENU ▼
Read by QxMD icon Read
search

robot -assisted

keyword
https://www.readbyqxmd.com/read/28221998/reduction-of-assessment-time-for-stroke-related-impairments-using-robotic-evaluation
#1
Sayyed Mostafa Mostafavi, Stephen H Scott, Sean P Dukelow, Parvin Mousavi
Robotic technologies can provide objective, reliable tools for assessing a broad range of sensory, motor and cognitive functions. However, as additional tasks are developed on these platforms, the time necessary to assess a patient increases. In this paper, we present a hierarchical task selection strategy for five tasks that form part of the battery of standard tests performed on the KINARM robotic system. The strategy is built using dependencies derived through three types of analyses: i) nonlinear hierarchical ordering theory is applied to determine the ordering of five tasks; ii) the parameters of all tasks are also ranked using non-linear hierarchical ordering theory; and iii) a modeling technique, fast orthogonal search (FOS), is applied to assess the predictive power of each robotic task for estimation of other task parameters...
February 16, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28221158/-urinary-lithiasis-treatment-by-laparoscopy-combined-techniques
#2
Inmaculada Fernández González, Ricardo Brime Menendez, Guillermo Celada Luis, Marco Antonio Acosta Reveles, Eduardo Mariano Albers Acosta, Pilar Mejía Celemin, Luis Alberto San José Manso, Javier Casado Varela
Over the last 30 years, the treatment of urinary lithiasis has changed dramatically. With the advent of extracorporeal lithotripsy and the advances on ureterorenoscopy and percutaneous nephrolithotomy, the need to turn to open and laparoscopic/robotic surgery has diminished. The objective of this article is to review the different indications for open and/or laparoscopic treatment of urinary lithiasis, to achieve its complete elimination with the less invasive possible means and trying to minimize the number of secondary procedures as well as complications...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28221151/-techniques-for-percutaneous-access-during-percutaneous-nephrolithotomy
#3
Daniel Pérez-Fentes
The creation of the access is one of the main steps in percutaneous nephrolithotomy, the most complicated for many urologists and the one that limited most the universalization of the technique. From a purely technical point of view, it includes puncture of the excretory tract and dilatation of the percutaneous tract to end with the introduction of an Amplatz type working sheath. The objective of the puncture is to try to access the excretory system through the renal papilla, minimizing the risk of bleeding...
January 2017: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/28220758/a-bio-inspired-electrocommunication-system-for-small-underwater-robots
#4
Wei Wang, Jindong Liu, Guangming Xie, Li Wen, Jianwei Zhang
Weakly electric fishes (Gymnotid and Mormyrid) use an electric field to communicate efficiently (termed electrocommunication) in the turbid waters of confined spaces where other communication modalities fail. Inspired by this biological phenomenon, we design an artificial electrocommunication system for small underwater robots and explore the capabilities of such an underwater robotic communication system. An analytical model for electrocommunication is derived to predict the effect of the key parameters such as electrode distance and emitter current of the system on the communication performance...
February 21, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28220715/a-systematic-review-of-mechanisms-of-gait-speed-change-post-stroke-part-1-spatiotemporal-parameters-and-asymmetry-ratios
#5
Elizabeth C Wonsetler, Mark G Bowden
BACKGROUND: In walking rehabilitation trials, self-selected walking speed (SSWS) has emerged as the dominant outcome measure to assess walking ability. However, this measure cannot differentiate between recovery of impaired movement and compensation strategies. Spatiotemporal variables and asymmetry ratios are frequently used to quantify gait deviations and are hypothesized markers of recovery. OBJECTIVES: The purpose of this review is to investigate spatiotemporal variables and asymmetry ratios as mechanistic recovery measures in physical therapy intervention studies post-stroke...
February 21, 2017: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/28219432/personalized-heterogeneous-deformable-model-for-fast-volumetric-registration
#6
Weixin Si, Xiangyun Liao, Qiong Wang, Pheng Ann Heng
BACKGROUND: Biomechanical deformable volumetric registration can help improve safety of surgical interventions by ensuring the operations are extremely precise. However, this technique has been limited by the accuracy and the computational efficiency of patient-specific modeling. METHODS: This study presents a tissue-tissue coupling strategy based on penalty method to model the heterogeneous behavior of deformable body, and estimate the personalized tissue-tissue coupling parameters in a data-driven way...
February 20, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28218649/smooth-sensor-motion-planning-for-robotic-cyber-physical-social-sensing-cpss
#7
Hong Tang, Liangzhi Li, Nanfeng Xiao
Although many researchers have begun to study the area of Cyber Physical Social Sensing (CPSS), few are focused on robotic sensors. We successfully utilize robots in CPSS, and propose a sensor trajectory planning method in this paper. Trajectory planning is a fundamental problem in mobile robotics. However, traditional methods are not suited for robotic sensors, because of their low efficiency, instability, and non-smooth-generated paths. This paper adopts an optimizing function to generate several intermediate points and regress these discrete points to a quintic polynomial which can output a smooth trajectory for the robotic sensor...
February 17, 2017: Sensors
https://www.readbyqxmd.com/read/28218495/design-and-evaluation-of-a-variable-stiffness-manual-operating-platform-for-laparoendoscopic-single-site-surgery-less
#8
Jinhua Li, Xuejie Li, Jianchen Wang, Yuan Xing, Shuxin Wang, Xiangyun Ren
BACKGROUND: Most of the existing robotic platforms for LESS have workspace and load capacity weaknesses, because of the limitation of one single incision. We have developed a LESS manual operating platform of which the stiffness of the insertion tube is controllable. METHODS: The system included two dexterous tool manipulators, a stereo-vision module and a variable stiffness insertion tube (VSIT), which was designed using phase-change material (mixed indium, gallium and stannum)...
February 20, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28218021/a-systematic-review-of-mechanisms-of-gait-speed-change-post-stroke-part-2-exercise-capacity-muscle-activation-kinetics-and-kinematics
#9
Elizabeth C Wonsetler, Mark G Bowden
BACKGROUND: Regaining locomotor ability is a primary goal in stroke rehabilitation and is most commonly measured using changes in self-selected walking speed. However, walking speed cannot identify the mechanisms by which an individual recovers. Laboratory-based mechanistic measures such as exercise capacity, muscle activation, force production, and movement analysis variables may better explain neurologic recovery. OBJECTIVES: The objectives of this systematic review are to examine changes in mechanistic gait outcomes and describe motor recovery as quantified by changes in laboratory-based mechanistic variables in rehabilitation trials...
February 20, 2017: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/28217260/robotic-liver-surgery-is-the-optimal-approach-as-bridge-to-transplantation
#10
Paolo Magistri, Giuseppe Tarantino, Roberto Ballarin, Andrea Coratti, Fabrizio Di Benedetto
The role of minimally invasive liver surgery as a bridge to transplantation is very promising but still underestimated. However, it should be noted that surgical approach for hepatocellular carcinomas (HCC) is not merely a technical or technological issue. Nowadays, the epidemiology of HCC is evolving due to the increasing role of non-alcoholic fatty-liver-disease, and the emerging concerns on direct-acting antivirals against hepatitis C virus in terms of HCC incidence. Therefore, a fully multidisciplinary study of the cirrhotic patient is currently more important than ever before, and the management of those patients should be reserved to tertiary referral hepatobiliary centers...
February 8, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28216555/monocular-based-6-degree-of-freedom-pose-estimation-technology-for-robotic-intelligent-grasping-systems
#11
Tao Liu, Yin Guo, Shourui Yang, Shibin Yin, Jigui Zhu
Industrial robots are expected to undertake ever more advanced tasks in the modern manufacturing industry, such as intelligent grasping, in which robots should be capable of recognizing the position and orientation of a part before grasping it. In this paper, a monocular-based 6-degree of freedom (DOF) pose estimation technology to enable robots to grasp large-size parts at informal poses is proposed. A camera was mounted on the robot end-flange and oriented to measure several featured points on the part before the robot moved to grasp it...
February 14, 2017: Sensors
https://www.readbyqxmd.com/read/28215885/robotic-milking-feeding-strategies-and-economic-returns
#12
Alex Bach, Victor Cabrera
Cows in herds equipped with conventional milking parlors follow a structured, consistent, and social milking and feeding routine. Furthermore, in most cases cows in conventional herds receive all their nutrients from a total mixed ration, whereas in herds equipped with robotic or automatic milking systems (AMS) a fraction of their nutrients is provided during milking, mainly as a means to attract cows to the milking system. In this regards, AMS present both a challenge and an opportunity for feeding cows. The main challenge resides in maintaining a minimum and relatively constant milking frequency in AMS...
February 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28215831/robotic-appendicovesicostomy-revision-in-a-pediatric-neobladder-patient
#13
Gene O Huang, Rodolfo A Elizondo Sáenz, Jason K Au, Edmond T Gonzales, Patricio C Gargollo
No abstract text is available yet for this article.
December 24, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/28215514/robotic-single-site-myomectomy-clinical-analysis-of-61consecutive-cases
#14
Eun Ji Choi, A Mi Rho, Sa Ra Lee, Kyungah Jeong, Hye-Sung Moon
STUDY OBJECTIVE: To report 61 consecutive cases of successful robotic single-site myomectomy(RSSM) and to evaluate the feasibility and safety of RSSM. DESIGN: Retrospective analysis of 61 cases of RSSM DESIGN: Classification: Canadian Task Force classification III SETTING: Department of Obstetrics and Gynecology, School of Medicine, Robot Surgery Center, Ewha Womans University PATIENTS: 61 patients who had RSSM INTERVENTIONS: Patients underwent RSSM by 3 gynecologic surgeons at Ewha Womans University Medical Center from December 2014 to May 2016...
February 12, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28214574/minimally-invasive-versus-open-approach-for-cystectomy-trends-in-the-utilization-and-demographic-or-clinical-predictors-using-the-national-cancer-database-ncdb
#15
Andrew G Bachman, Alexander A Parker, Marshall D Shaw, Brian W Cross, Kelly L Stratton, Michael S Cookson, Sanjay G Patel
OBJECTIVES: To examine temporal national trends of operative approach for cystectomy and identify demographic or clinical predictive factors that influence choice of approach. METHODS: We performed a retrospective cohort study of patients who underwent cystectomy for bladder cancer between 2010 and 2013 using the National Cancer Database (NCDB). Approach was stratified by open vs. minimally invasive (robotic or laparoscopic). Univariate Pearson chi-square and multivariate logistic regression analysis was used to assess relationships between demographic and hospital factors and the receipt of minimally invasive or open surgical approach...
February 15, 2017: Urology
https://www.readbyqxmd.com/read/28214486/robotic-inferior-vena-cava-surgery
#16
Victor J Davila, Cristine S Velazco, William M Stone, Richard J Fowl, Haidar M Abdul-Muhsin, Erik P Castle, Samuel R Money
OBJECTIVE: Inferior vena cava (IVC) surgery is uncommon and has traditionally been performed through open surgical approaches. Renal cell carcinoma with IVC extension generally requires vena cavotomy and reconstruction. Open removal of malpositioned IVC filters (IVCF) is occasionally required after endovascular retrieval attempts have failed. As our experience with robotic surgery has advanced, we have applied this technology to surgery of the IVC. We reviewed our institution's experience with robotic surgical procedures involving the IVC to determine its safety and efficacy...
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28214128/robotic-arch-catheter-placement-reduces-cerebral-embolization-during-thoracic-endovascular-aortic-repair-tevar
#17
A H Perera, C V Riga, L Monzon, R G Gibbs, C D Bicknell, M Hamady
OBJECTIVE: Stroke caused by cerebral embolization constitutes a principal risk during arch manipulation and thoracic endovascular aortic repair (TEVAR). This study investigates the incidence of cerebral embolization during catheter placement in the aortic arch, and compares robotic and manual techniques. METHODS: Intra-operative transcranial Doppler (TCD) was performed in 11 patients undergoing TEVAR. Wire and catheter placement in the arch was performed by two experienced operators...
February 14, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28213788/three-different-approaches-to-the-inferior-mesenteric-artery-during-robotic-d3-lymphadenectomy-for-rectal-cancer
#18
Songphol Malakorn, Tarik Sammour, Brian Bednarski, Yi-Qian Nancy You, George J Chang
BACKGROUND: In rectal cancer surgery, proximal ligation of the inferior mesenteric artery (IMA) with radical lymphadenectomy is the accepted standard of care.1 Our purpose is to describe three different standardized technical approaches for the management of the IMA during D3 lymphadenectomy.2 METHODS: Operative videos of three robotic D3 lymphadenectomy procedures for rectal cancer were reviewed and annotated with schematic anatomical descriptions for clarification. RESULTS: There are three methods for the management of the IMA during D3 lymphadenectomy for rectal cancer...
February 17, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28212259/robotic-rectal-resection-with-a-single-docking-technique-thanks-to-the-rotation-of-the-r3-arm
#19
Benedetta Pesi, Mario Annecchiarico, Stefano Amore Bonapasta, Alessandro Nerini, Federico Perna, Lapo Bencini, Michele Di Marino, Andrea Coratti
BACKGROUND: Robotic surgery for rectal resection presents some advantages compared with the traditional technique; however, it also presents some limitations, especially due to the multiple changes of surgical fields. We describe a new technique to perform low-anterior resection using single docking with the rotation of the third arm and our perioperative results. MATERIALS AND METHODS: A total of 31 patients who underwent low-anterior rectal robotic resection with single-docking technique using robotic daVinci SI (Surgical Intuitive System) were included in the study...
February 20, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28211622/mri-guided-focused-ultrasound-robotic-system-for-animal-experiments
#20
Marinos Yiannakou, Georgios Menikou, Christos Yiallouras, Cleanthis Ioannides, Christakis Damianou
BACKGROUND: In this paper an MRI-guided focused ultrasound (MRgFUS) robotic system was developed that can be used for conducting experiments in small animals.The target for this robotic system regarding motion was to move a therapeutic ultrasound transducer in two Cartesian axes. METHODS: A single element spherically focused transducer of 3 cm diameter, focusing at 7 cm and operating at 0.4 MHz was used. The positioning device incorporates only MRI compatible materials...
February 17, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
keyword
keyword
33999
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"