scholarly journals Creating a low-cost virtual reality surgical simulation to increase surgical oncology capacity and capability

2019 ◽  
Vol 13 ◽  
Author(s):  
Groesbeck Parham ◽  
Eric G Bing ◽  
Anthony Cuevas ◽  
Boris Fisher ◽  
Jonathan Skinner ◽  
...  
2019 ◽  
pp. 1-7 ◽  
Author(s):  
Eric G. Bing ◽  
Groesbeck P. Parham ◽  
Anthony Cuevas ◽  
Boris Fisher ◽  
Jonathan Skinner ◽  
...  

PURPOSE Worldwide, more than 80% of people diagnosed with cancer will require surgery during their disease course, but only 5% to 20% of low- and middle-income countries have access to safe, affordable, and timely surgery. Developing surgical oncology skills requires significant time and mentoring. Virtual reality (VR) simulators can reduce the time required to master surgical procedures but are prohibitively expensive. We sought to determine whether a VR simulator using low-cost computer gaming equipment could train novice surgeons in Africa to perform a virtual radical abdominal (open) hysterectomy (RAH). METHODS Our RAH VR simulator used the Oculus Rift (Oculus VR, Menlo Park, CA), a VR headset with hand controllers that costs less than $1,500. Surgical novices learned to perform five key steps of a virtual RAH. We measured and identified predictors of movement and time efficiency for the simulation. RESULTS Ten novice surgeons in Lusaka, Zambia, enrolled in the study. Movement and time efficiency greatly improved over time. Independent predictors of movement efficiency were number of simulations, surgical experience, and time since college graduation. Independent predictors of time efficiency were number of simulations, surgical experience, days between simulation sessions, age, sex, and an interaction between number of simulations and surgical experience. CONCLUSION Low-cost VR may be an effective tool to help surgical novices learn complex surgical oncology procedures. If learning to perform VR surgical procedures with low-cost hardware leads to faster mastery of surgical procedures in the operating room, low-cost VR may represent one of the solutions to increasing access to surgical cancer care globally.


Author(s):  
Wilver Auccahuasi ◽  
Mónica Diaz ◽  
Fernando Sernaque ◽  
Edward Flores ◽  
Justiniano Aybar ◽  
...  

2015 ◽  
Vol 24 (4) ◽  
pp. 298-321 ◽  
Author(s):  
Ernesto de la Rubia ◽  
Antonio Diaz-Estrella

Virtual reality has become a promising field in recent decades, and its potential now seems clearer than ever. With the development of handheld devices and wireless technologies, interest in virtual reality is also increasing. Therefore, there is an accompanying interest in inertial sensors, which can provide such advantages as small size and low cost. Such sensors can also operate wirelessly and be used in an increasing number of interactive applications. An example related to virtual reality is the ability to move naturally through virtual environments. This is the objective of the real-walking navigation technique, for which a number of advantages have previously been reported in terms of presence, object searching, and collision, among other concerns. In this article, we address the use of foot-mounted inertial sensors to achieve real-walking navigation in a wireless virtual reality system. First, an overall description of the problem is presented. Then, specific difficulties are identified, and a corresponding technique is proposed to overcome each: tracking of foot movements; determination of the user’s position; percentage estimation of the gait cycle, including oscillating movements of the head; stabilization of the velocity of the point of view; and synchronization of head and body yaw angles. Finally, a preliminary evaluation of the system is conducted in which data and comments from participants were collected.


Author(s):  
Lorenzo Micaroni ◽  
Marina Carulli ◽  
Francesco Ferrise ◽  
Monica Bordegoni ◽  
Alberto Gallace

This research aims to design and develop an innovative system, based on an olfactory display, to be used for investigating the directionality of the sense of olfaction. In particular, the design of an experimental setup to understand and determine to what extent the sense of olfaction is directional and whether there is prevalence of the sense of vision over the one of smell when determining the direction of an odor, is described. The experimental setup is based on low cost Virtual Reality (VR) technologies. In particular, the system is based on a custom directional olfactory display, an Oculus Rift Head Mounted Display (HMD) to deliver both visual and olfactory cues and an input device to register subjects’ answers. The VR environment is developed in Unity3D. The paper describes the design of the olfactory interface as well as its integration with the overall system. Finally the results of the initial testing are reported in the paper.


2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Chelsey Wallace, M.S. ◽  
Zahra Nourmohammadi, Ph.D. ◽  
David A. Zopf, M.D., M.S.

Background and Hypothesis: Protruding ears, also known as prominauris, are prevalent worldwide at an occurrence rate of about 5%. Children with prominauris report lower self-esteem and experience increased teasing and social isolation at school. From a functional standpoint, protruding ears can make wearing prescription glasses difficult. This increased stress and anxiety and impaired functionality lead children and families to seek treatment. One of the most effective treatments for protruding ears is otoplasty. This procedure involves an incision in the back of the ear and the placement of non-resorbable sutures to reform the ear. Alternatively, the procedure can be performed using an incisionless technique. As this is an elective procedure done commonly in children, adequate education of medical trainees is critical to ensure the proper level of skill is attained and patient satisfaction is maximized. Currently, teaching otoplasty is done with cadavers and supervised procedures with an attending. Surgical simulators are employed in the instruction of a variety of surgical procedures and allow residents to practice in a zero-risk environment. In addition, 3D printing has facilitated the development of surgical simulators allowing for a more cost-effective, consistent, and anatomically correct simulator. We developed an ear model made from silicone for trainees to practice traditional and incisionless otoplasty. Project Methods: The otoplasty surgical simulator was developed by isolating an ear from a computed-tomography scan in the Materialise software to create a 3D model. This model was then altered to create a negative mold. The mold was printed using fusion deposition printing with 1.75 MM polylactic acid filament. After printing, the mold was filled with Dragon Skin Silicone Shore 20 to simulate ear cartilage. The model was then coated in a layer of Dragon Skin Silicone Shore 10 to simulate a layer of skin. Conclusion and Potential Impact: This otoplasty simulator will next be validated by expert surgeons and then used in a surgical simulation workshop for surgical trainees. Because of the low-cost of the surgical simulator and the ease of manufacturing, this simulator can also be used to train surgeons abroad where access to surgical training may not be readily available. 


2012 ◽  
Vol 11 (3) ◽  
pp. 9-17 ◽  
Author(s):  
Sébastien Kuntz ◽  
Ján Cíger

A lot of professionals or hobbyists at home would like to create their own immersive virtual reality systems for cheap and taking little space. We offer two examples of such "home-made" systems using the cheapest hardware possible while maintaining a good level of immersion: the first system is based on a projector (VRKit-Wall) and cost around 1000$, while the second system is based on a head-mounted display (VRKit-HMD) and costs between 600� and 1000�. We also propose a standardization of those systems in order to enable simple application sharing. Finally, we describe a method to calibrate the stereoscopy of a NVIDIA 3D Vision system.


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