scholarly journals Medical Augmented-Reality Visualizer for Surgical Training and Education in Medicine

2019 ◽  
Vol 9 (13) ◽  
pp. 2732 ◽  
Author(s):  
Radosław Gierwiało ◽  
Marcin Witkowski ◽  
Maciej Kosieradzki ◽  
Wojciech Lisik ◽  
Łukasz Groszkowski ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Spatial Perception ◽  
Spatial Relationship ◽  
Guidance System ◽  
Training And Education ◽  
3D Perception ◽  
Augmented Reality System ◽  
Internal Structures ◽  
Medical Augmented Reality ◽  
Liver Phantom

This paper presents a projection-based augmented-reality system (MARVIS) that supports the visualization of internal structures on the surface of a liver phantom. MARVIS is endowed with three key features: tracking of spatial relationship between the phantom and the operator’s head in real time, monoscopic projection of internal liver structures onto the phantom surface for 3D perception without additional head-mounted devices, and phantom internal electronic circuit to assess the accuracy of a syringe guidance system. An initial validation was carried out by 25 medical students (12 males and 13 females; mean age, 23.12 years; SD, 1.27 years) and 3 male surgeons (mean age, 43.66 years; SD, 7.57 years). The validation results show that the ratio of failed syringe insertions was reduced from 50% to 30% by adopting the MARVIS projection. The proposed system suitably enhances a surgeon’s spatial perception of a phantom internal structure.

Interactive Medical Augmented Reality System for Remote Surgical Assistance

2015 ◽  
Vol 9 (1L) ◽  
pp. 97-104 ◽  
Author(s):  
Tzyh-Chyang Chang ◽  
Chung-Hung Hsieh ◽  
Chung-Hsien Huang ◽  
Ji-Wei Yang ◽  
Shih-Tseng Lee ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Augmented Reality System ◽  
Surgical Assistance ◽  
Medical Augmented Reality

scholarly journals PPAP: Perspective Projection Augment Platform with Pan–Tilt Actuation for Improved Spatial Perception

Sensors ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 2652
Author(s):  
JungHyun Byun ◽  
Tack-Don Han
Keyword(s):  
Augmented Reality ◽  
Depth Perception ◽  
Spatial Perception ◽  
Spatial Relationship ◽  
User Studies ◽  
Servo Control ◽  
Virtual Object ◽  
Perspective Projection ◽  
User Perspective ◽  
Relationship Of

In this paper, we propose PPAP, an augmented reality platform with an actuated projector for dynamic user-perspective projection. In PPAP, a stationary camera is used jointly with a pan–tilt motorized projector-camera unit. With the servo control of the steerable pan–tilt system, the system is able to continuously orient itself to match the user’s view center of the projection-mapped surface. This provides users with greatly widened viewing angles in the augmented scene, when compared to the stationary projection. Through user studies, in which users judged the size and distance of a projected virtual object, we verified that the perspective projection with the actuated projector helps users better understand the spatial relationship of the virtual object in the augmented scene in terms of depth perception.

Augmented reality guidance system for peripheral nerve blocks

2010 ◽  
Author(s):  
Chris Wedlake ◽  
John Moore ◽  
Maxim Rachinsky ◽  
Daniel Bainbridge ◽  
Andrew D. Wiles ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Peripheral Nerve ◽  
Guidance System ◽  
Nerve Blocks ◽  
Peripheral Nerve Blocks

scholarly journals A Navigation and Augmented Reality System for Visually Impaired People

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3061
Author(s):  
Alice Lo Valvo ◽  
Daniele Croce ◽  
Domenico Garlisi ◽  
Fabrizio Giuliano ◽  
Laura Giarré ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Visually Impaired ◽  
Virtual Path ◽  
Physical Support ◽  
Augmented Reality System ◽  
Virtual Paths ◽  
Visually Impaired People ◽  
Impaired People ◽  
Autonomous Mobility ◽  
Indoor And Outdoor

In recent years, we have assisted with an impressive advance in augmented reality systems and computer vision algorithms, based on image processing and artificial intelligence. Thanks to these technologies, mainstream smartphones are able to estimate their own motion in 3D space with high accuracy. In this paper, we exploit such technologies to support the autonomous mobility of people with visual disabilities, identifying pre-defined virtual paths and providing context information, reducing the distance between the digital and real worlds. In particular, we present ARIANNA+, an extension of ARIANNA, a system explicitly designed for visually impaired people for indoor and outdoor localization and navigation. While ARIANNA is based on the assumption that landmarks, such as QR codes, and physical paths (composed of colored tapes, painted lines, or tactile pavings) are deployed in the environment and recognized by the camera of a common smartphone, ARIANNA+ eliminates the need for any physical support thanks to the ARKit library, which we exploit to build a completely virtual path. Moreover, ARIANNA+ adds the possibility for the users to have enhanced interactions with the surrounding environment, through convolutional neural networks (CNNs) trained to recognize objects or buildings and enabling the possibility of accessing contents associated with them. By using a common smartphone as a mediation instrument with the environment, ARIANNA+ leverages augmented reality and machine learning for enhancing physical accessibility. The proposed system allows visually impaired people to easily navigate in indoor and outdoor scenarios simply by loading a previously recorded virtual path and providing automatic guidance along the route, through haptic, speech, and sound feedback.

Ergonomic effects of medical augmented reality glasses in video-assisted surgery

2021 ◽  
Author(s):  
Ae Kyeong Lim ◽  
Junsun Ryu ◽  
Hong Man Yoon ◽  
Hee Chul Yang ◽  
Seok-ki Kim
Keyword(s):  
Augmented Reality ◽  
Video Assisted ◽  
Medical Augmented Reality
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