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Augmented reality

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https://www.readbyqxmd.com/read/28918184/removal-of-recurrent-intraorbital-tumour-using-a-system-of-augmented-reality
#1
P Scolozzi, P Bijlenga
The most crucial step in the management of pleomorphic adenoma of the lacrimal gland is choosing the optimal approach for excision. We report the successful removal of a recurrent pleomorphic adenoma of the lacrimal gland in a 42-year-old woman using a specific microscope-based system of augmented reality.
September 13, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28912113/mobile-augmented-reality-as-a-feature-for-self-oriented-blended-learning-in-medicine-randomized-controlled-trial
#2
Christoph Noll, Ute von Jan, Ulrike Raap, Urs-Vito Albrecht
BACKGROUND: Advantages of mobile Augmented Reality (mAR) application-based learning versus textbook-based learning were already shown in a previous study. However, it was unclear whether the augmented reality (AR) component was responsible for the success of the self-developed app or whether this was attributable to the novelty of using mobile technology for learning. OBJECTIVE: The study's aim was to test the hypothesis whether there is no difference in learning success between learners who employed the mobile AR component and those who learned without it to determine possible effects of mAR...
September 14, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28906410/augmented-reality-navigation-in-open-surgery-for-hilar-cholangiocarcinoma-resection-with-hemihepatectomy-using-video-based-in-situ-three-dimensional-anatomical-modeling-a-case-report
#3
Rui Tang, Longfei Ma, Canhong Xiang, Xuedong Wang, Ang Li, Hongen Liao, Jiahong Dong
RATIONALE: Patients who undergo hilar cholangiocarcinoma (HCAC) resection with concomitant hepatectomy have a high risk of postoperative morbidity and mortality due to surgical trauma to the hepatic and biliary vasculature. PATIENT CONCERNS: A 58-year-old Chinese man with yellowing skin and sclera, abdominal distension, pruritus, and anorexia for approximately 3 weeks. DIAGNOSES: Magnetic resonance cholangiopancreatography and enhanced computed tomography (CT) scanning revealed a mass over the biliary tree at the porta hepatis, which diagnosed to be s a hilar cholangiocarcinoma...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28898800/texting-during-stair-negotiation-and-implications-for-fall-risk
#4
Rami Hashish, Megan E Toney-Bolger, Sarah S Sharpe, Benjamin D Lester, Adam Mulliken
BACKGROUND/AIM: Walking requires the integration of the sensory and motor systems. Cognitive distractions have been shown to interfere with negotiation of complex walking environments, especially in populations at greater risk for falls (e.g. the elderly). With the pervasiveness of mobile messaging and the recent introduction of augmented reality mobile gaming, it is increasingly important to understand how distraction associated with the simultaneous use of a mobile device impacts navigation of the complex walking environments experienced in daily life...
September 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28894655/intraoperative-evaluation-of-body-surface-improvement-by-an-augmented-reality-system-that-a-clinician-can-modify
#5
Daisuke Mitsuno, Koichi Ueda, Tomoki Itamiya, Takashi Nuri, Yuki Otsuki
BACKGROUND: Augmented reality (AR) technology that can combine computer-generated images with a real scene has been reported in the medical field recently. We devised the AR system for evaluation of improvements of the body surface, which is important for plastic surgery. METHODS: We constructed an AR system that is easy to modify by combining existing devices and free software. We superimposed the 3-dimensional images of the body surface and the bone (obtained from VECTRA H1 and CT) onto the actual surgical field by Moverio BT-200 smart glasses and evaluated improvements of the body surface in 8 cases...
August 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28885161/virtual-and-augmented-reality-systems-for-renal-interventions-a-systematic-review
#6
Felicitas J Detmer, Julian Hettig, Daniel Schindele, Martin Schostak, Christian Hansen
Many virtual and augmented reality systems have been proposed to support renal interventions. This paper reviews such systems employed in the treatment of renal cell carcinoma and renal stones.
September 6, 2017: IEEE Reviews in Biomedical Engineering
https://www.readbyqxmd.com/read/28883633/pok%C3%A3-mon-go-and-psychological-distress-physical-complaints-and-work-performance-among-adult-workers-a-retrospective-cohort-study
#7
Kazuhiro Watanabe, Norito Kawakami, Kotaro Imamura, Akiomi Inoue, Akihito Shimazu, Toru Yoshikawa, Hisanori Hiro, Yumi Asai, Yuko Odagiri, Etsuko Yoshikawa, Akizumi Tsutsumi
The effects of Pokémon GO, a new mobile game application which utilizes augmented reality, on risky behavior and health have already been discussed in anecdotal evidence. However, there have been no studies about its effects on mental health. This study investigated the relationships between Pokémon GO and psychological distress from an existing workers' cohort in Japan. Online surveys were conducted to 3,915 full-time workers, at baseline (Nov 26, 2015-Feb 18, 2016) and at follow-up (Dec 1-4, 2016), using a self-report questionnaire...
September 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28882754/mini-review-far-peripheral-vision
#8
Michael J Simpson
The region of far peripheral vision, beyond 60 degrees of visual angle, is important to the evaluation of peripheral dark shadows (negative dysphotopsia) seen by some intraocular lens (IOL) patients. Theoretical calculations show that the limited diameter of an IOL affects ray paths at large angles, leading to a dimming of the main image for small pupils, and to peripheral illumination by light bypassing the IOL for larger pupils. These effects are rarely bothersome, and cataract surgery is highly successful, but there is a need to improve the characterization of far peripheral vision, for both pseudophakic and phakic eyes...
September 9, 2017: Vision Research
https://www.readbyqxmd.com/read/28881251/registration-and-fusion-quantification-of-augmented-reality-based-nasal-endoscopic-surgery
#9
Yakui Chu, Jian Yang, Shaodong Ma, Danni Ai, Wenjie Li, Hong Song, Liang Li, Duanduan Chen, Lei Chen, Yongtian Wang
This paper quantifies the registration and fusion display errors of augmented reality-based nasal endoscopic surgery (ARNES). We comparatively investigated the spatial calibration process for front-end endoscopy and redefined the accuracy level of a calibrated endoscope by using a calibration tool with improved structural reliability. We also studied how registration accuracy was combined with the number and distribution of the deployed fiducial points (FPs) for positioning and the measured registration time...
August 3, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28879340/application-of-augmented-reality-for-inferior-alveolar-nerve-block-anesthesia-a-technical-note
#10
Yu-Jin Won, Sang-Hoon Kang
Efforts to apply augmented reality (AR) technology in the medical field include the introduction of AR techniques into dental practice. The present report introduces a simple method of applying AR during an inferior alveolar nerve block, a procedure commonly performed in dental clinics.
June 2017: J Dent Anesth Pain Med
https://www.readbyqxmd.com/read/28866805/development-of-a-tool-to-aid-the-radiologic-technologist-using-augmented-reality-and-computer-vision
#11
REVIEW
Robert D MacDougall, Benoit Scherrer, Steven Don
This technical innovation describes the development of a novel device to aid technologists in reducing exposure variation and repeat imaging in computed and digital radiography. The device consists of a color video and depth camera in combination with proprietary software and user interface. A monitor in the x-ray control room displays the position of the patient in real time with respect to automatic exposure control chambers and image receptor area. The thickness of the body part of interest is automatically displayed along with a motion indicator for the examined body part...
September 2, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28866766/an-human-computer-interactive-augmented-reality-system-for-coronary-artery-diagnosis-planning-and-training
#12
Qiming Li, Chen Huang, Shengqing Lv, Zeyu Li, Yimin Chen, Lizhuang Ma
In order to let the doctor carry on the coronary artery diagnosis and preoperative planning in a more intuitive and more natural way, and to improve the training effect for interns, an augmented reality system for coronary artery diagnosis planning and training (ARS-CADPT) is designed and realized in this paper. At first, a 3D reconstruction algorithm based on computed tomographic (CT) images is proposed to model the coronary artery vessels (CAV). Secondly, the algorithms of static gesture recognition and dynamic gesture spotting and recognition are presented to realize the real-time and friendly human-computer interaction (HCI), which is the characteristic of ARS-CADPT...
September 2, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28866590/the-hologram-in-my-hand-how-effective-is-interactive-exploration-of-3d-visualizations-in-immersive-tangible-augmented-reality
#13
Benjamin Bach, Ronell Sicat, Johanna Beyer, Maxime Cordeil, Hanspeter Pfister
We report on a controlled user study comparing three visualization environments for common 3D exploration. Our environments differ in how they exploit natural human perception and interaction capabilities. We compare an augmented-reality head-mounted display (Microsoft HoloLens), a handheld tablet, and a desktop setup. The novel head-mounted HoloLens display projects stereoscopic images of virtual content into a user's real world and allows for interaction in-situ at the spatial position of the 3D hologram...
August 29, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28865911/trauma-management-therapy-with-virtual-reality-augmented-exposure-therapy-for-combat-related-ptsd-a-randomized-controlled-trial
#14
Deborah C Beidel, B Christopher Frueh, Sandra M Neer, Clint A Bowers, Benjamin Trachik, Thomas W Uhde, Anouk Grubaugh
Virtual reality exposure therapy (VRET) realistically incorporates traumatic cues into exposure therapy and holds promise in the treatment of combat-related posttraumatic stress disorder (PTSD). In a randomized controlled trial of 92 Iraq and Afghanistan veterans and active duty military personnel with combat-related PTSD, we compared the efficacy of Trauma Management Therapy (TMT; VRET plus a group treatment for anger, depression, and social isolation) to VRET plus a psychoeducation control condition. Efficacy was evaluated at mid- and post-treatment, and at 3- and 6-month follow-up...
August 23, 2017: Journal of Anxiety Disorders
https://www.readbyqxmd.com/read/28861693/mixed-reality-ultrasound-guidance-system-a-case-study-in-system-development-and-a-cautionary-tale
#15
Golafsoun Ameri, John S H Baxter, Daniel Bainbridge, Terry M Peters, Elvis C S Chen
PURPOSE: Real-time ultrasound has become a crucial aspect of several image-guided interventions. One of the main constraints of such an approach is the difficulty in interpretability of the limited field of view of the image, a problem that has recently been addressed using mixed reality, such as augmented reality and augmented virtuality. The growing popularity and maturity of mixed reality has led to a series of informal guidelines to direct development of new systems and to facilitate regulatory approval...
August 31, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28837096/a-mobile-outdoor-augmented-reality-method-combining-deep-learning-object-detection-and-spatial-relationships-for-geovisualization
#16
Jinmeng Rao, Yanjun Qiao, Fu Ren, Junxing Wang, Qingyun Du
The purpose of this study was to develop a robust, fast and markerless mobile augmented reality method for registration, geovisualization and interaction in uncontrolled outdoor environments. We propose a lightweight deep-learning-based object detection approach for mobile or embedded devices; the vision-based detection results of this approach are combined with spatial relationships by means of the host device's built-in Global Positioning System receiver, Inertial Measurement Unit and magnetometer. Virtual objects generated based on geospatial information are precisely registered in the real world, and an interaction method based on touch gestures is implemented...
August 24, 2017: Sensors
https://www.readbyqxmd.com/read/28822228/computerized-neurocognitive-interventions-in-the-context-of-the-brain-training-controversy
#17
Rebeca Isabel García-Betances, María Fernanda Cabrera-Umpiérrez, María T Arredondo
This article presents, in the form of an analytic narrative review, a complete picture of the state-of-the-art, challenges, and perspectives in the field of information and communication technology (ICT)-based neurocognitive interventions for older adults. The narrative particularly focuses on applications aimed at mild cognitive impairment and similar age-related cognitive deficits, which are analyzed in the context of the brain training controversy. Clarifying considerations are provided about the nature and present extent of the brain training debate, regarding the possible influence it has on the support received by research and development initiatives dealing with innovative computerized neurocognitive interventions...
August 19, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28819936/introducing-navigation-during-melanoma-related-sentinel-lymph-node-procedures-in-the-head-and-neck-region
#18
Gijs H KleinJan, Baris Karakullukçu, W Martin C Klop, Thijs Engelen, Nynke S van den Berg, Fijs W B van Leeuwen
BACKGROUND: Intraoperative sentinel node (SN) identification in patients with head-and-neck malignancies can be challenging due to unexpected drainage patterns and anatomical complexity. Here, intraoperative navigation-based guidance technologies may provide outcome. In this study, gamma camera-based freehandSPECT was evaluated in combination with the hybrid tracer ICG-(99m)Tc-nanocolloid. MATERIALS AND METHODS: Eight patients with melanoma located in the head-and-neck area were included...
August 17, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28817828/fall-prone-older-people-s-attitudes-towards-the-use-of-virtual-reality-technology-for-fall-prevention
#19
Kim Dockx, Lisa Alcock, Esther Bekkers, Pieter Ginis, Miriam Reelick, Elisa Pelosin, Giovanna Lagravinese, Jeffrey M Hausdorff, Anat Mirelman, Lynn Rochester, Alice Nieuwboer
BACKGROUND: Virtual reality (VR) technology is a relatively new rehabilitation tool that can deliver a combination of cognitive and motor training for fall prevention. The attitudes of older people to such training are currently unclear. OBJECTIVE: This study aimed to investigate: (1) the attitudes of fall-prone older people towards fall prevention exercise with and without VR; (2) attitudinal changes after intervention with and without VR; and (3) user satisfaction following fall prevention exercise with and without VR...
August 18, 2017: Gerontology
https://www.readbyqxmd.com/read/28815109/visualization-of-molecular-structures-using-hololens-based-augmented-reality
#20
M A Hoffman, J B Provance
Biological molecules and biologically active small molecules are complex three dimensional structures. Current flat screen monitors are limited in their ability to convey the full three dimensional characteristics of these molecules. Augmented reality devices, including the Microsoft HoloLens, offer an immersive platform to change how we interact with molecular visualizations. We describe a process to incorporate the three dimensional structures of small molecules and complex proteins into the Microsoft HoloLens using aspirin and the human leukocyte antigen (HLA) as examples...
2017: AMIA Summits on Translational Science Proceedings
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