keyword
MENU ▼
Read by QxMD icon Read
search

trajectory planning

keyword
https://www.readbyqxmd.com/read/28643751/quick-efficient-and-effective-patient-specific-intensity-modulated-radiation-therapy-quality-assurance-using-log-file-and-electronic-portal-imaging-device
#1
Rajesh Kumar, H I Amols, M Lovelock, S D Sharma, D Datta
AIM: The aim of work is to explore a quick, efficient, and effective patient-specific intensity-modulated radiation therapy (IMRT) quality assurance (QA). MATERIALS AND METHODS: Software tools were developed to extract and analyze the multi-leaf collimator (MLC) leaf positions (LPs) from electronic portal imaging device (EPID) images for Varian C-series machine and TrueBeam, to extract useful data from MLC log file of C-series linear accelerator (LINAC), to extract useful information from the trajectory log binary file of TrueBeam LINAC, to compare LPs derived from EPID images with log file/trajectory log data, and to analyze IMRT treatment files using the MATLAB programming language...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28635971/exercise-among-women-with-ovarian-cancer-a-feasibility-and-pre-post-test-exploratory-pilot-study
#2
Xiaochen Zhang, Daniel McClean, Emily Ko, Mark A Morgan, Kathryn Schmitz
PURPOSE/OBJECTIVES: To establish the feasibility and acceptability of completing a higher dose of the planned physical activity volume among women with ovarian cancer, including those undergoing active treatment. 
. DESIGN: A pre-/post-test exercise intervention. All participants were asked to complete 225 minutes per week of physical activity for 26 weeks. Multiple supports were provided, including exercise DVDs, self-reported logs, and an objective physical activity tracker (Fitbit®)...
May 1, 2017: Oncology Nursing Forum
https://www.readbyqxmd.com/read/28620830/anatomy-driven-multiple-trajectory-planning-admtp-of-intracranial-electrodes-for-epilepsy-surgery
#3
Rachel Sparks, Vejay Vakharia, Roman Rodionov, Sjoerd B Vos, Beate Diehl, Tim Wehner, Anna Miserocchi, Andrew W McEvoy, John S Duncan, Sebastien Ourselin
PURPOSE: Epilepsy is potentially curable with resective surgery if the epileptogenic zone (EZ) can be identified. If non-invasive imaging is unable to elucidate the EZ, intracranial electrodes may be implanted to identify the EZ as well as map cortical function. In current clinical practice, each electrode trajectory is determined by time-consuming manual inspection of preoperative imaging to find a path that avoids blood vessels while traversing appropriate deep and superficial regions of interest (ROIs)...
June 15, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28609300/a-new-method-to-reconstruct-intra-fractional-prostate-motion-in-volumetric-modulated-arc-therapy
#4
Y Chi, N H Rezaeian, C Shen, Y Zhou, W Lu, M Yang, R Hannan, X Jia
Intra-fractional motion is a concern during prostate radiation therapy, as it may cause deviations between planned and delivered radiation doses. Because accurate motion information during treatment delivery is critical to address dose deviation, we developed the projection marker matching method (PM(3)), a novel method for prostate motion reconstruction in volumetric modulated arc therapy. The purpose of this method is to reconstruct in-treatment prostate motion trajectory using projected positions of implanted fiducial markers measured in kV x-ray projection images acquired during treatment delivery...
July 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28600235/semi-automatic-radiofrequency-ablation-planning-based-on-constrained-clustering-process-for-hepatic-tumors
#5
Rendong Chen, Tian'an Jiang, Fang Lu, Kaifeng Wang, Dexing Kong
Radiofrequency ablation (RFA) is currently one of the most effective methods for minimally invasive treatment of hepatic tumors. Planning the probe placements is an essential and challenging step in RFA treatment. To completely destroy the tumor with minimum amount of affected native tissue, a new RFA planning system is proposed in this paper. In the proposed planning system, the minimum number of ablations and a conical insertion region for each ablation session are determined automatically. Based on the geometric character of the tumor, a novel clustering algorithm is developed to allow a better layout of the overlapping ablations...
June 5, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28598265/robot-assisted-endoscopic-third-ventriculostomy-institutional-experience-in-9-patients
#6
Reid Hoshide, Mark Calayag, Hal Meltzer, Michael L Levy, David Gonda
OBJECTIVE The endoscopic third ventriculostomy (ETV) is an established and effective treatment for obstructive hydrocephalus. In its most common application, surgeons plan their entry point and the endoscope trajectory for the procedure based on anatomical landmarks, then control the endoscope freehand. Recent studies report an incidence of neural injuries as high as 16.6% of all ETVs performed in North America. The authors have introduced the ROSA system to their ETV procedure to stereotactically optimize endoscope trajectories, to reduce risk of traction on neural structures by the endoscope, and to provide a stable mechanical holder of the endoscope...
June 9, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28593859/european-association-for-neuro-oncology-eano-guidelines-for-palliative-care-in-adults-with-glioma
#7
REVIEW
Andrea Pace, Linda Dirven, Johan A F Koekkoek, Heidrun Golla, Jane Fleming, Roberta Rudà, Christine Marosi, E Le Rhun, Robin Grant, Kathy Oliver, Ingela Oberg, Helen J Bulbeck, Alasdair G Rooney, Roger Henriksson, H Roeline W Pasman, Stefan Oberndorfer, Michael Weller, Martin J B Taphoorn
Patients with glioma present with complex palliative care needs throughout their disease trajectory. The life-limiting nature of gliomas and the presence of specific symptoms related to neurological deterioration necessitate an appropriate and early palliative care approach. The multidisciplinary palliative care task force of the European Association of Neuro-Oncology did a systematic review of the available scientific literature to formulate the best possible evidence-based recommendations for the palliative care of adult patients with glioma, with the aim to reduce symptom burden and improve the quality of life of patients and their caregivers, particularly in the end-of-life phase...
June 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28593704/fragmentation-increases-wind-disturbance-impacts-on-forest-structure-and-carbon-stocks-in-a-western-amazonian-landscape
#8
Naomi B Schwartz, María Uriarte, Ruth DeFries, Kristopher M Bedka, Katia Fernandes, Victor Gutiérrez-Vélez, Miguel A Pinedo-Vasquez
Tropical second-growth forests could help mitigate climate change, but the degree to which their carbon potential is achieved will depend on exposure to disturbance. Wind disturbance is common in tropical forests, shaping structure, composition, and function, and influencing successional trajectories. However, little is known about the impacts of extreme winds on second-growth forests in fragmented landscapes, though these ecosystems are often located in mosaics of forest, pasture, cropland, and other land cover types...
June 7, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28591196/trajectories-of-dementia-related-cognitive-decline-in-a-large-mental-health-records-derived-patient-cohort
#9
Elizabeth Baker, Ehtesham Iqbal, Caroline Johnston, Matthew Broadbent, Hitesh Shetty, Robert Stewart, Robert Howard, Stephen Newhouse, Mizanur Khondoker, Richard J B Dobson
BACKGROUND: Modeling trajectories of decline can help describe the variability in progression of cognitive impairment in dementia. Better characterisation of these trajectories has significant implications for understanding disease progression, trial design and care planning. METHODS: Patients with at least three Mini-mental State Examination (MMSE) scores recorded in the South London and Maudsley NHS Foundation Trust Electronic Health Records, UK were selected (N = 3441) to form a retrospective cohort...
2017: PloS One
https://www.readbyqxmd.com/read/28587088/locali-calibration-free-systematic-localization-approach-for-indoor-positioning
#10
Muhammad Usman Ali, Soojung Hur, Yongwan Park
Recent advancements in indoor positioning systems are based on infrastructure-free solutions, aimed at improving the location accuracy in complex indoor environments without the use of specialized resources. A popular infrastructure-free solution for indoor positioning is a calibration-based positioning, commonly known as fingerprinting. Fingerprinting solutions require extensive and error-free surveys of environments to build radio-map databases, which play a key role in position estimation. Fingerprinting also requires random updates of the database, when there are significant changes in the environment or a decrease in the accuracy...
May 25, 2017: Sensors
https://www.readbyqxmd.com/read/28577424/specific-needs-of-families-of-young-adults-with-profound-intellectual-disability-during-and-after-transition-to-adulthood-what-are-we-missing
#11
Camille Gauthier-Boudreault, Frances Gallagher, Mélanie Couture
INTRODUCTION: At the age of 21, the trajectory of services offered to youth with profound intellectual disability (ID) change significantly since access to specialised services is more limited. Despite the desire of parents to avoid any impact on their child, several factors can influence the course of this transition. However, there is little research on facilitators and obstacles to the transition to adulthood, and impacts on people with a profound ID. It is therefore difficult to provide solutions that meet their specific needs...
May 31, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28575348/preliminary-development-of-an-informational-media-use-measure-for-patients-with-implanted-defibrillators-toward-a-model-of-social-ecological-assessment-of-patient-education-and-support
#12
Christopher E Knoepke, Daniel D Matlock
Social work interventions in health care, particularly those that involve working with people being treated for chronic and life-threatening conditions, frequently involve efforts to educate patients about their disease, treatment options, safety planning, medical adherence, and other associated issues. Despite an intuitive notion that patients access information about all of these issues through a variety of media-both inside and outside the clinical encounter, created by professionals and by others-there currently exists no validated means of assessing patients' use of these forms of information...
May 31, 2017: Health & Social Work
https://www.readbyqxmd.com/read/28574689/changing-urban-carbon-metabolism-over-time-historical-trajectory-and-future-pathway
#13
Shaoqing Chen, Bin Chen
Cities are expected to play a major role in carbon emissions mitigation. A key step in decoupling carbon emissions from urban economy is to understand the impact of socioeconomic development on urban metabolism over time. Herein, we establish a system-based framework for modeling the variation of urban carbon metabolism through time by integrating a metabolic flow inventory, input-output model and network analysis. Using Beijing as a case study, we track the historical trajectory of carbon flows embodied in urban final consumption over 1985-2012...
June 2, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28571409/a-manipulative-instrument-with-simultaneous-gesture-and-end-effector-trajectory-planning-and-controlling
#14
Hsien-I Lin, Xuan-Anh Nguyen
To operate a redundant manipulator to accomplish the end-effector trajectory planning and simultaneously control its gesture in online programming, incorporating the human motion is a useful and flexible option. This paper focuses on a manipulative instrument that can simultaneously control its arm gesture and end-effector trajectory via human teleoperation. The instrument can be classified by two parts; first, for the human motion capture and data processing, marker systems are proposed to capture human gesture...
May 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28569431/providing-support-to-surrogate-decision-makers-for-people-living-with-dementia-healthcare-professional-organisational-and-community-responsibilities
#15
Christopher Shanley, Deirdre Fetherstonhaugh, Linda McAuliffe, Michael Bauer, Elizabeth Beattie
The prevalence of dementia will continue to increase with the ageing of the population. Many people living with dementia will reach a stage where surrogate decision-makers-mostly family carers-will need to make a range of decisions on their behalf. The aim of this study was to learn from surrogate decision-makers how they can be most effectively supported in this role. The study employed a qualitative design using semi-structured face-to-face or telephone interviews with a purposive sample of 34 surrogate decision-makers of people living with dementia...
June 1, 2017: Health & Social Care in the Community
https://www.readbyqxmd.com/read/28567428/acl-roof-impingement-revisited-does-the-independent-femoral-drilling-technique-avoid-roof-impingement-with-anteriorly-placed-tibial-tunnels
#16
John A Tanksley, Brian C Werner, Evan J Conte, David P Lustenberger, M Tyrrell Burrus, Stephen F Brockmeier, F Winston Gwathmey, Mark D Miller
BACKGROUND: Anatomic femoral tunnel placement for single-bundle anterior cruciate ligament (ACL) reconstruction is now well accepted. The ideal location for the tibial tunnel has not been studied extensively, although some biomechanical and clinical studies suggest that placement of the tibial tunnel in the anterior part of the ACL tibial attachment site may be desirable. However, the concern for intercondylar roof impingement has tempered enthusiasm for anterior tibial tunnel placement...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28566009/health-and-health-care-utilization-of-the-older-population-of-ireland-comparing-the-intellectual-disability-population-and-the-general-population
#17
Mary McCarron, Eimear Cleary, Philip McCallion
BACKGROUND/OBJECTIVES: Largely unresearched are the similarities and differences compared to the general population in the aging of people with an intellectual disability (ID). Data reported here compare the health and health-care utilization of the general aging population in Ireland with those who are aging with ID. DESIGN: Data for comparisons were drawn from the 2010 The Irish Longitudinal Study on Ageing (TILDA) and the Intellectual Disability Supplement (IDS)-TILDA Wave 1 data sets...
July 2017: Research on Aging
https://www.readbyqxmd.com/read/28555030/a-compact-magnetic-field-based-obstacle-detection-and-avoidance-system-for-miniature-spherical-robots
#18
Fang Wu, Akash Vibhute, Gim Song Soh, Kristin L Wood, Shaohui Foong
Due to their efficient locomotion and natural tolerance to hazardous environments, spherical robots have wide applications in security surveillance, exploration of unknown territory and emergency response. Numerous studies have been conducted on the driving mechanism, motion planning and trajectory tracking methods of spherical robots, yet very limited studies have been conducted regarding the obstacle avoidance capability of spherical robots. Most of the existing spherical robots rely on the "hit and run" technique, which has been argued to be a reasonable strategy because spherical robots have an inherent ability to recover from collisions...
May 28, 2017: Sensors
https://www.readbyqxmd.com/read/28545231/atmospheric-sampling-on-ascension-island-using-multirotor-uavs
#19
Colin Greatwood, Thomas S Richardson, Jim Freer, Rick M Thomas, A Rob MacKenzie, Rebecca Brownlow, David Lowry, Rebecca E Fisher, Euan G Nisbet
As part of an NERC-funded project investigating the southern methane anomaly, a team drawn from the Universities of Bristol, Birmingham and Royal Holloway flew small unmanned multirotors from Ascension Island for the purposes of atmospheric sampling. The objective of these flights was to collect air samples from below, within and above a persistent atmospheric feature, the Trade Wind Inversion, in order to characterise methane concentrations and their isotopic composition. These parameters allow the methane in the different air masses to be tied to different source locations, which can be further analysed using back trajectory atmospheric computer modelling...
May 23, 2017: Sensors
https://www.readbyqxmd.com/read/28542280/analysing-human-mobility-patterns-of-hiking-activities-through-complex-network-theory
#20
Isaac Lera, Toni Pérez, Carlos Guerrero, Víctor M Eguíluz, Carlos Juiz
The exploitation of high volume of geolocalized data from social sport tracking applications of outdoor activities can be useful for natural resource planning and to understand the human mobility patterns during leisure activities. This geolocalized data represents the selection of hike activities according to subjective and objective factors such as personal goals, personal abilities, trail conditions or weather conditions. In our approach, human mobility patterns are analysed from trajectories which are generated by hikers...
2017: PloS One
keyword
keyword
46746
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"