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https://www.readbyqxmd.com/read/29325493/simulation-based-evaluation-of-an-in-vehicle-smart-situation-awareness-enhancement-system
#1
Andreas Gregoriades, Alistair Sutcliffe
Situation awareness (SA) constitutes a critical factor in road safety, strongly related to accidents. This paper describes the evaluation of a proposed SA enhancement system (SAES) that exploits augmented reality through a head-up display. Two SAES designs were evaluation (information rich v. minimal information) using a custom-made simulator and the Situation Awareness Global Assessment Technique (SAGAT) with performance and EEG measures. The paper describes the process of assessing the SA of drivers using the SAES, through a series of experiments with participants in a Cave Automatic Virtual Environment (CAVE)...
January 11, 2018: Ergonomics
https://www.readbyqxmd.com/read/29322072/plan-in-2-d-execute-in-3-d-an-augmented-reality-solution-for-cup-placement-in-total-hip-arthroplasty
#2
Javad Fotouhi, Clayton P Alexander, Mathias Unberath, Giacomo Taylor, Sing Chun Lee, Bernhard Fuerst, Alex Johnson, Greg Osgood, Russell H Taylor, Harpal Khanuja, Mehran Armand, Nassir Navab
Reproducibly achieving proper implant alignment is a critical step in total hip arthroplasty procedures that has been shown to substantially affect patient outcome. In current practice, correct alignment of the acetabular cup is verified in C-arm x-ray images that are acquired in an anterior-posterior (AP) view. Favorable surgical outcome is, therefore, heavily dependent on the surgeon's experience in understanding the 3-D orientation of a hemispheric implant from 2-D AP projection images. This work proposes an easy to use intraoperative component planning system based on two C-arm x-ray images that are combined with 3-D augmented reality (AR) visualization that simplifies impactor and cup placement according to the planning by providing a real-time RGBD data overlay...
April 2018: Journal of Medical Imaging
https://www.readbyqxmd.com/read/29312847/augmented-reality-the-use-of-the-picolinker-smart-glasses-improves-wire-insertion-under-fluoroscopy
#3
Takafumi Hiranaka, Takaaki Fujishiro, Yuichi Hida, Yosaku Shibata, Masanori Tsubosaka, Yuta Nakanishi, Kenjiro Okimura, Harunobu Uemoto
AIM: To demonstrate the feasibility of the wearable smart glasses, PicoLinker, in guide wire insertion under fluoroscopic guidance. METHODS: Under a fluoroscope, a surgeon inserted 3 mm guide wires into plastic femurs from the lateral cortex to the femoral head center while the surgeon did or did not wear PicoLinker, which are wearable smart glasses where the fluoroscopic video was displayed (10 guide wires each). RESULTS: The tip apex distance, radiation exposure time and total insertion time were significantly shorter while wearing the PicoLinker smart glasses...
December 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/29303163/ar4vi-ar-as-an-accessibility-tool-for-people-with-visual-impairments
#4
James M Coughlan, Joshua Miele
Although AR technology has been largely dominated by visual media, a number of AR tools using both visual and auditory feedback have been developed specifically to assist people with low vision or blindness - an application domain that we term Augmented Reality for Visual Impairment (AR4VI). We describe two AR4VI tools developed at Smith-Kettlewell, as well as a number of pre-existing examples. We emphasize that AR4VI is a powerful tool with the potential to remove or significantly reduce a range of accessibility barriers...
October 2017: Int Symp Mix Augment Real
https://www.readbyqxmd.com/read/29303060/is-reality-limiting-patient-understanding-a-discussion-of-the-implications-of-augmented-reality-technology-to-patient-understanding
#5
Benjamin E Zucker, Paris Tekkis, Christos Kontovounisios
No abstract text is available yet for this article.
January 1, 2018: Surgical Innovation
https://www.readbyqxmd.com/read/29301165/the-development-of-augmented-reality-to-enhance-minimally-invasive-surgery
#6
Keith Dodd, Nathaniel P Brooks
Minimally invasive surgery (MIS) reduces unnecessary tissue damage to the patient but obscures the natural surgical interface that is provided by open surgical procedures. Multiple feedback mechanisms, mainly visual and tactile, are greatly reduced in MIS. Microscopes, endoscopes, and image-guided navigation traditionally provide enough visual information for successful minimally invasive procedures, although the limited feedback makes these procedures more difficult to learn. Research has been performed to develop alternative solutions that regain additional feedback...
December 22, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29282850/endoscopic-navigation-system-with-extended-field-of-view-using-augmented-reality-technology
#7
Jae Hwan Bong, Hyun-Jong Song, Yoojin Oh, Namji Park, Hyungmin Kim, Shinsuk Park
BACKGROUND: While endoscopic skull base surgery (ESBS) has emerged as an alternative surgical option, the limited field of view of the endoscope may lead to the surgeon's fatigue and discomfort. METHODS: The developed navigation system includes extended augmented reality (AR), which can provide an extended viewport to a conventional endoscopic view by overlaying 3D anatomical models generated from preoperative medical images onto endoscope images. To enhance the accuracy of the developed system, we adopted state-of-the-art endoscopic calibration and tracking techniques based on an optical tracking system...
December 28, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/29278582/computer-assisted-surgery-virtual-and-augmented-reality-displays-for-navigation-during-urological-interventions
#8
Matthias N van Oosterom, Henk G van der Poel, Nassir Navab, Cornelis J H van de Velde, Fijs W B van Leeuwen
PURPOSE OF REVIEW: To provide an overview of the developments made for virtual- and augmented-reality navigation procedures in urological interventions/surgery. RECENT FINDINGS: Navigation efforts have demonstrated potential in the field of urology by supporting guidance for various disorders. The navigation approaches differ between the individual indications, but seem interchangeable to a certain extent. An increasing number of pre- and intra-operative imaging modalities has been used to create detailed surgical roadmaps, namely: (cone-beam) computed tomography, MRI, ultrasound, and single-photon emission computed tomography...
December 22, 2017: Current Opinion in Urology
https://www.readbyqxmd.com/read/29248686/augmented-reality-for-personalized-nanomedicines
#9
REVIEW
Yugyung Lee, Chi H Lee
As our understanding of onset and progress of diseases at the genetic and molecular level rapidly progresses, the potential of advanced technologies, such as 3D-printing, Socially-Assistive Robots (SARs) or augmented reality (AR), that are applied to personalized nanomedicines (PNMs) to alleviate pathological conditions, has become more prominent. Among advanced technologies, AR in particular has the greatest potential to address those challenges and facilitate the translation of PNMs into formidable clinical application of personalized therapy...
December 14, 2017: Biotechnology Advances
https://www.readbyqxmd.com/read/29234302/home-based-virtual-reality-augmented-training-improves-lower-limb-muscle-strength-balance-and-functional-mobility-following-chronic-incomplete-spinal-cord-injury
#10
Michael Villiger, Jasmin Liviero, Lea Awai, Rahel Stoop, Pawel Pyk, Ron Clijsen, Armin Curt, Kynan Eng, Marc Bolliger
Key factors positively influencing rehabilitation and functional recovery after spinal cord injury (SCI) include training variety, intensive movement repetition, and motivating training tasks. Systems supporting these aspects may provide profound gains in rehabilitation, independent of the subject's treatment location. In the present study, we test the hypotheses that virtual reality (VR)-augmented training at home (i.e., unsupervised) is feasible with subjects with an incomplete SCI (iSCI) and that it improves motor functions such as lower limb muscle strength, balance, and functional mobility...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29232871/thin-film-quantum-dot-photodiode-for-monolithic-infrared-image-sensors
#11
Pawel E Malinowski, Epimitheas Georgitzikis, Jorick Maes, Ioanna Vamvaka, Fortunato Frazzica, Jan Van Olmen, Piet De Moor, Paul Heremans, Zeger Hens, David Cheyns
Imaging in the infrared wavelength range has been fundamental in scientific, military and surveillance applications. Currently, it is a crucial enabler of new industries such as autonomous mobility (for obstacle detection), augmented reality (for eye tracking) and biometrics. Ubiquitous deployment of infrared cameras (on a scale similar to visible cameras) is however prevented by high manufacturing cost and low resolution related to the need of using image sensors based on flip-chip hybridization. One way to enable monolithic integration is by replacing expensive, small-scale III-V-based detector chips with narrow bandgap thin-films compatible with 8- and 12-inch full-wafer processing...
December 10, 2017: Sensors
https://www.readbyqxmd.com/read/29230065/the-toll-like-receptor-2-6-agonist-fsl-1-lipopeptide-therapeutically-mitigates-acute-radiation-syndrome
#12
Cathryn J Kurkjian, Hao Guo, Nathan D Montgomery, Ning Cheng, Hong Yuan, Joseph R Merrill, Gregory D Sempowski, W June Brickey, Jenny P-Y Ting
Risks of radiation exposure from nuclear incidents and cancer radiotherapy are undeniable realities. These dangers urgently compel the development of agents for ameliorating radiation-induced injuries. Biologic pathways mediated by myeloid differentiation primary response gene 88 (MyD88), the common adaptor for toll-like receptor (TLR) and Interleukin-1 receptor signaling, are critical for radioprotection. Treating with agonists prior to radiation enhances survival by activating TLR signaling, whereas radiomitigating TLR-activating therapeutics given after exposure are less defined...
December 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29229586/predictors-of-playing-augmented-reality-mobile-games-while-walking-based-on-the-theory-of-planned-behavior-web-based-survey
#13
Hyeseung Elizabeth Koh, Jeeyun Oh, Michael Mackert
BACKGROUND: There has been a sharp increase in the number of pedestrians injured while using a mobile phone, but little research has been conducted to explain how and why people use mobile devices while walking. Therefore, we conducted a survey study to explicate the motivations of mobile phone use while walking. OBJECTIVE: The purpose of this study was to identify the critical predictors of behavioral intention to play a popular mobile game, Pokemon Go, while walking, based on the theory of planned behavior (TPB)...
December 11, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/29221081/design-and-prototype-of-an-augmented-reality-display-with-per-pixel-mutual-occlusion-capability
#14
Austin Wilson, Hong Hua
State-of-the-art optical see-through head-mounted displays for augmented reality (AR) applications lack mutual occlusion capability, which refers to the ability to render correct light blocking relationship when merging digital and physical objects, such that the virtual views appear to be ghost-like and lack realistic appearance. In this paper, using off-the-shelf optical components, we present the design and prototype of an AR display which is capable of rendering per-pixel mutual occlusion. Our prototype utilizes a miniature organic light emitting display coupled with a liquid crystal on silicon type spatial light modulator to achieve an occlusion capable AR display offering a 30° diagonal field of view and an angular resolution of 1...
November 27, 2017: Optics Express
https://www.readbyqxmd.com/read/29218212/heads-up-descemet-membrane-endothelial-keratoplasty-performed-using-a-3d-visualization-system
#15
Virgilio Galvis, Ruben D Berrospi, Juan D Arias, Alejandro Tello, Julio C Bernal
A 68-year-old female underwent Descemet membrane endothelial keratoplasty (DMEK) in her right eye using a 3D visualization system with the surgeon looking directly to a digital screen instead of through the eyepieces of the surgical microscope. The procedure was uneventful. Five weeks after the surgery the DMEK graft was in good position and totally adhered, the cornea clear and uncorrected distance visual acuity 20/50. This is the first reported case of DMEK using 3D augmented reality visualization system...
November 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29216051/highly-efficient-waveguide-display-with-space-variant-volume-holographic-gratings
#16
Chao Yu, Yifan Peng, Qing Zhao, Haifeng Li, Xu Liu
We propose a highly efficient waveguide display based on space-variant volume holographic gratings (SVVHGs). The local period and slant angle of the SVVHG vary along the tangential direction, enabling variant incident angles to satisfy the Bragg condition of the local gratings. As a result, we enlarge the field of view (FOV) without using the conventional multiplexing scheme, while achieving high efficiency and large FOV at the same time. We experimentally record the SVVHGs on Bayfol HX200 films. We demonstrate that the proposed display can achieve 31...
December 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/29215500/feasibility-and-accuracy-of-thoracolumbar-minimally-invasive-pedicle-screw-placement-with-augmented-reality-navigation-technology
#17
Adrian Elmi-Terander, Rami Nachabe, Halldor Skulason, Kyrre Pedersen, Michael Söderman, John Racadio, Drazenko Babic, Paul Gerdhem, Erik Edström
STUDY DESIGN: Cadaveric laboratory study. OBJECTIVE: To assess the feasibility and accuracy of minimally invasive thoracolumbar pedicle screw placement using augmented reality (AR) surgical navigation SUMMARY OF BACKGROUND DATA.: Minimally invasive spine (MIS) surgery has increasingly become the method of choice for a wide variety of spine pathologies. Navigation technology based on AR has been shown to be feasible, accurate and safe in open procedures. AR technology may also be used for MIS surgery...
December 19, 2017: Spine
https://www.readbyqxmd.com/read/29209193/human-avatar-symbiosis-for-the-treatment-of-auditory-verbal-hallucinations-in-schizophrenia-through-virtual-augmented-reality-and-brain-computer-interfaces
#18
Antonio Fernández-Caballero, Elena Navarro, Patricia Fernández-Sotos, Pascual González, Jorge J Ricarte, José M Latorre, Roberto Rodriguez-Jimenez
This perspective paper faces the future of alternative treatments that take advantage of a social and cognitive approach with regards to pharmacological therapy of auditory verbal hallucinations (AVH) in patients with schizophrenia. AVH are the perception of voices in the absence of auditory stimulation and represents a severe mental health symptom. Virtual/augmented reality (VR/AR) and brain computer interfaces (BCI) are technologies that are growing more and more in different medical and psychological applications...
2017: Frontiers in Neuroinformatics
https://www.readbyqxmd.com/read/29207564/obstacle-detection-as-a-safety-alert-in-augmented-reality-models-by-the-use-of-deep-learning-techniques
#19
Dawid Połap, Karolina Kęsik, Kamil Książek, Marcin Woźniak
Augmented reality (AR) is becoming increasingly popular due to its numerous applications. This is especially evident in games, medicine, education, and other areas that support our everyday activities. Moreover, this kind of computer system not only improves our vision and our perception of the world that surrounds us, but also adds additional elements, modifies existing ones, and gives additional guidance. In this article, we focus on interpreting a reality-based real-time environment evaluation for informing the user about impending obstacles...
December 4, 2017: Sensors
https://www.readbyqxmd.com/read/29207537/a-robust-indoor-outdoor-navigation-filter-fusing-data-from-vision-and-magneto-inertial-measurement-unit
#20
David Caruso, Alexandre Eudes, Martial Sanfourche, David Vissière, Guy Le Besnerais
Visual-inertial Navigation Systems (VINS) are nowadays used for robotic or augmented reality applications. They aim to compute the motion of the robot or the pedestrian in an environment that is unknown and does not have specific localization infrastructure. Because of the low quality of inertial sensors that can be used reasonably for these two applications, state of the art VINS rely heavily on the visual information to correct at high frequency the drift of inertial sensors integration. These methods struggle when environment does not provide usable visual features, such than in low-light of texture-less areas...
December 4, 2017: Sensors
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