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https://www.readbyqxmd.com/read/28646401/a-standardized-set-of-3-d-objects-for-virtual-reality-research-and-applications
#1
David Peeters
The use of immersive virtual reality as a research tool is rapidly increasing in numerous scientific disciplines. By combining ecological validity with strict experimental control, immersive virtual reality provides the potential to develop and test scientific theories in rich environments that closely resemble everyday settings. This article introduces the first standardized database of colored three-dimensional (3-D) objects that can be used in virtual reality and augmented reality research and applications...
June 23, 2017: Behavior Research Methods
https://www.readbyqxmd.com/read/28646388/skin-conductance-reactivity-to-standardized-virtual-reality-combat-scenes-in-veterans-with-ptsd
#2
Mascha van 't Wout, Christopher M Spofford, William S Unger, Elizabeth B Sevin, M Tracie Shea
Interest in virtual reality (VR) as a clinical tool to augment posttraumatic stress (PTSD) treatment has grown substantially in recent years due to advances in VR technology. Moreover, its potential assisted use in the PTSD diagnostic process has been recognized. In this study we examined physiological responding, skin conductance, to a standardized presentation of non-personalized combat-related VR events (e.g. encountering enemy fire; explosions) as compared to non-combat classroom VR events in 19 Veterans with and 24 Veterans without combat-related PTSD who had been deployed to Iraq and Afghanistan...
June 23, 2017: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/28644758/an-independent-shopping-experience-for-wheelchair-users-through-augmented-reality-and-rfid
#3
Zulqarnain Rashid, Rafael Pous, Christopher S Norrie
People with physical and mobility impairments continue to struggle to attain independence in the performance of routine activities and tasks. For example, browsing in a store and interacting with products located beyond an arm's length may be impossible without the enabling intervention of a human assistant. This research article describes a study undertaken to design, develop, and evaluate potential interaction methods for motor-impaired individuals, specifically those who use wheelchairs. Our study includes a user-centered approach, and a categorization of wheelchair users based upon the severity of their disability and their individual needs...
June 23, 2017: Assistive Technology: the Official Journal of RESNA
https://www.readbyqxmd.com/read/28637947/neurosurgical-virtual-reality-simulation-for-brain-tumor-using-high-definition-computer-graphics-a-review-of-the-literature
#4
Taichi Kin, Hirofumi Nakatomi, Naoyuki Shono, Seiji Nomura, Toki Saito, Hiroshi Oyama, Nobuhito Saito
Simulation and planning of surgery using a virtual reality model is becoming common with advances in computer technology. In this study, we conducted a literature search to find trends in virtual simulation of surgery for brain tumors. A MEDLINE search for "neurosurgery AND (simulation OR virtual reality)" retrieved a total of 1,298 articles published in the past 10 years. After eliminating studies designed solely for education and training purposes, 28 articles about the clinical application remained. The finding that the vast majority of the articles were about education and training rather than clinical applications suggests that several issues need be addressed for clinical application of surgical simulation...
June 22, 2017: Neurologia Medico-chirurgica
https://www.readbyqxmd.com/read/28631297/an-augmented-reality-tool-for-learning-spatial-anatomy-on-mobile-devices
#5
Nishant Jain, Patricia Youngblood, Matthew Hasel, Sakti Srivastava
INTRODUCTION: Augmented Realty (AR) offers a novel method of blending virtual and real anatomy for intuitive spatial learning. Our first aim in the study was to create a prototype AR tool for mobile devices. Our second aim was to complete a technical evaluation of our prototype AR tool focused on measuring the system's ability to accurately render digital content in the real world. MATERIALS AND METHODS: We imported Computed Tomography (CT) data derived virtual surface models into a 3D Unity engine environment and implemented an AR algorithm to display these on mobile devices...
June 20, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28624249/the-role-of-3-d-heart-models-in-planning-and-executing-interventional-procedures
#6
REVIEW
Elena K Grant, Laura J Olivieri
Percutaneous interventions aimed at addressing congenital and structural heart disease are simultaneously becoming more common and more complex as time progresses. An increasing number of heart defects that had previously required open heart surgery can now be successfully addressed in the cardiac catheterization laboratory. Adequate preprocedural preparation for these novel, complex procedures is critical to ensure their success. Diagnostic data can be collected before the intervention and displayed in multiple formats during the procedure...
February 24, 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28618306/effects-of-acute-exercise-on-fear-extinction-in-rats-and-exposure-therapy-in-humans-null-findings-from-five-experiments
#7
Jolene Jacquart, Rheall F Roquet, Santiago Papini, Mark B Powers, David Rosenfield, Jasper A J Smits, Marie-H Monfils
BACKGROUND: Exposure therapy is an established learning-based intervention for the treatment of anxiety disorders with an average response rate of nearly 50%, leaving room for improvement. Emerging strategies to enhance exposure therapy in humans and fear extinction retention in animal models are primarily pharmacological. These approaches are limited as many patients report preferring non-pharmacological approaches in therapy. With general cognitive enhancement effects, exercise has emerged as a plausible non-pharmacological augmentation strategy...
June 4, 2017: Journal of Anxiety Disorders
https://www.readbyqxmd.com/read/28600252/radiative-transport-based-flame-volume-reconstruction-from-videos
#8
Liang Shen, Dengming Zhu, Saad Nadeem, Zhaoqi Wang, Arie E Kaufman
We introduce a novel approach for flame volume reconstruction from videos using inexpensive charge-coupled device (CCD) consumer cameras. The approach includes an economical data capture technique using inexpensive CCD cameras. Leveraging the smear feature of the CCD chip, we present a technique for synchronizing CCD cameras while capturing flame videos from different views. Our reconstruction is based on the radiative transport equation which enables complex phenomena such as emission, extinction, and scattering to be used in the rendering process...
June 6, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28584247/see-through-optical-combiner-for-augmented-reality-head-mounted-display-index-matched-anisotropic-crystal-lens
#9
Jong-Young Hong, Chang-Kun Lee, Seungjae Lee, Byounghyo Lee, Dongheon Yoo, Changwon Jang, Jonghyun Kim, Jinsoo Jeong, Byoungho Lee
A novel see-through optical device to combine the real world and the virtual image is proposed which is called an index-matched anisotropic crystal lens (IMACL). The convex lens made of anisotropic crystal is enveloped with the isotropic material having same refractive index with the extraordinary refractive index of the anisotropic crystal. This optical device functions as the transparent glass or lens according to the polarization state of the incident light. With the novel optical property, IMACL can be utilized in the see-through near eye display, or head-mounted display for augmented reality...
June 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28574342/robust-3d-object-tracking-from-monocular-images-using-stable-parts
#10
Alberto Crivellaro, Mahdi Rad, Yannick Verdie, Kwang Moo Yi, Pascal Fua, Vincent Lepetit
We present an algorithm for estimating the pose of a rigid object in real-time under challenging conditions. Our method effectively handles poorly textured objects in cluttered, changing environments, even when their appearance is corrupted by large occlusions, and it relies on grayscale images to handle metallic environments on which depth cameras would fail. As a result, our method is suitable for practical Augmented Reality applications including industrial environments. At the core of our approach is a novel representation for the 3D pose of object parts: We predict the 3D pose of each part in the form of the 2D projections of a few control points...
May 26, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28573091/virtual-reality-and-augmented-reality-in-plastic-surgery-a-review
#11
REVIEW
Youngjun Kim, Hannah Kim, Yong Oock Kim
Recently, virtual reality (VR) and augmented reality (AR) have received increasing attention, with the development of VR/AR devices such as head-mounted displays, haptic devices, and AR glasses. Medicine is considered to be one of the most effective applications of VR/AR. In this article, we describe a systematic literature review conducted to investigate the state-of-the-art VR/AR technology relevant to plastic surgery. The 35 studies that were ultimately selected were categorized into 3 representative topics: VR/AR-based preoperative planning, navigation, and training...
May 2017: Archives of Plastic Surgery
https://www.readbyqxmd.com/read/28571789/virtual-reality-based-simulators-for-spine-surgery-a-systematic-review
#12
REVIEW
Michael Pfandler, Marc Lazarovici, Philipp Stefan, Patrick Wucherer, Matthias Weigl
BACKGROUND CONTEXT: Virtual reality (VR) based simulators offer numerous benefits and are very useful in assessing and training surgical skills. Although they are standard in some surgical subspecialties, their actual use in spinal surgery remains unclear. Currently, only technical reviews of VR based simulators are available for spinal surgery. PURPOSE: Thus, we performed a systematic review which examined the existing research on VR based simulators in spinal procedures...
May 29, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28567393/the-promise-of-an-augmented-reality-game-pok%C3%A3-mon-go
#13
EDITORIAL
Ji-Young An, Claudio R Nigg
No abstract text is available yet for this article.
May 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28566499/finally-making-sense-of-the-double-slit-experiment
#14
Yakir Aharonov, Eliahu Cohen, Fabrizio Colombo, Tomer Landsberger, Irene Sabadini, Daniele C Struppa, Jeff Tollaksen
Feynman stated that the double-slit experiment "…has in it the heart of quantum mechanics. In reality, it contains the only mystery" and that "nobody can give you a deeper explanation of this phenomenon than I have given; that is, a description of it" [Feynman R, Leighton R, Sands M (1965) The Feynman Lectures on Physics]. We rise to the challenge with an alternative to the wave function-centered interpretations: instead of a quantum wave passing through both slits, we have a localized particle with nonlocal interactions with the other slit...
June 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28554878/adherence-to-aha-guidelines-when-adapted-for-augmented-reality-glasses-for-assisted-pediatric-cardiopulmonary-resuscitation-a-randomized-controlled-trial
#15
Johan N Siebert, Frederic Ehrler, Alain Gervaix, Kevin Haddad, Laurence Lacroix, Philippe Schrurs, Ayhan Sahin, Christian Lovis, Sergio Manzano
BACKGROUND: The American Heart Association (AHA) guidelines for cardiopulmonary resuscitation (CPR) are nowadays recognized as the world's most authoritative resuscitation guidelines. Adherence to these guidelines optimizes the management of critically ill patients and increases their chances of survival after cardiac arrest. Despite their availability, suboptimal quality of CPR is still common. Currently, the median hospital survival rate after pediatric in-hospital cardiac arrest is 36%, whereas it falls below 10% for out-of-hospital cardiac arrest...
May 29, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28545005/the-efficacy-of-trauma-management-therapy-a-controlled-pilot-investigation-of-a-three-week-intensive-outpatient-program-for-combat-related-ptsd
#16
Deborah C Beidel, B Christopher Frueh, Sandra M Neer, Carl W Lejuez
Despite the 8-18.5% of returning Operation Iraqi Freedom (OIF), Operation Enduring Freedom (OEF) and Operation New Dawn (OND) veterans who are suffering from posttraumatic stress disorder (PTSD), few receive empirically supported treatments. Among those that do, the dropout rate is high and more than 50% retain their diagnosis after treatment. This study evaluated the efficacy of Trauma Management Therapy (TMT), delivered in a 3-week intensive outpatient (IOP) format. TMT combines virtual-reality augmented individual exposure therapy with a group intervention to address social isolation, anger, and depression...
May 11, 2017: Journal of Anxiety Disorders
https://www.readbyqxmd.com/read/28542716/improving-needle-tip-identification-during-ultrasound-guided-procedures-in-anaesthetic-practice
#17
REVIEW
H J Scholten, A Pourtaherian, N Mihajlovic, H H M Korsten, R A Bouwman
Ultrasound guidance is becoming standard practice for needle-based interventions in anaesthetic practice, such as vascular access and peripheral nerve blocks. However, difficulties in aligning the needle and the transducer can lead to incorrect identification of the needle tip, possibly damaging structures not visible on the ultrasound screen. Additional techniques specifically developed to aid alignment of needle and probe or identification of the needle tip are now available. In this scoping review, advantages and limitations of the following categories of those solutions are presented: needle guides; alterations to needle or needle tip; three- and four-dimensional ultrasound; magnetism, electromagnetic or GPS systems; optical tracking; augmented (virtual) reality; robotic assistance; and automated (computerised) needle detection...
May 22, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28540125/project-heaven-preoperative-training-in-virtual-reality
#18
Kiratipath Iamsakul, Alexander V Pavlovcik, Jesus I Calderon, Lance M Sanderson
A cephalosomatic anastomosis (CSA; also called HEAVEN: head anastomosis venture) has been proposed as an option for patients with neurological impairments, such as spinal cord injury (SCI), and terminal medical illnesses, for which medicine is currently powerless. Protocols to prepare a patient for life after CSA do not currently exist. However, methods used in conventional neurorehabilitation can be used as a reference for developing preparatory training. Studies on virtual reality (VR) technologies have documented VR's ability to enhance rehabilitation and improve the quality of recovery in patients with neurological disabilities...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28527556/pacu-go-augmented-and-virtual-realities-in%C3%A2-perianesthesia-care
#19
Matthew D Byrne
No abstract text is available yet for this article.
June 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/28514821/-the-way-to-closed-loop-dream-and-reality
#20
Torben Biester, Thomas Danne, Olga Kordonouri
An old dream of patients with type 1 diabetes and medical teams alike is a fully automated insulin therapy. Available sensor-augmented insulin-pumps are able to intervene in insulin therapy by reducing the dose. Aim of several studies is to add an algorithm to the interaction of pump and sensor, so that insulin doses can be regulated fully automatically. Totally closed loop systems are currently not yet available for outpatient use. Hybrid closed loop systems have been approved in the US. They can improve the metabolic status of patients with type 1 diabetes...
May 2017: Deutsche Medizinische Wochenschrift
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