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Proceedings ArticleDOI

Development of virtual reality based robotic surgical trainer for patient-specific deformable anatomy

02 Jul 2015-Artificial Intelligence Review (ACM)-pp 16

TL;DR: A method to develop a virtual reality based simulator with open source software and a game engine is provided for laparoscopic surgical simulation system consisting of a haptic interface device and a graphic display.
Abstract: The need for training surgeons for robotic surgeries is increasing with the increase in number of laparoscopic procedures performed with robots. The commercial simulators available are expensive and hence not available to all. This paper provides a method to develop a virtual reality based simulator with open source software and a game engine. Another feature included in the simulator is the use of patient-specific organ models. This is advantageous since it is safe and less expensive compared to other simulators, and also is more flexible due to the use of game engine. For a realistic simulation, a model of tool-tissue interaction is carried out between the tool and an external tumour using the method described. The reconstructed geometric organ model, after being meshed, is integrated into the laparoscopic surgical simulation system consisting of a haptic interface device and a graphic display.
Topics: Haptic technology (53%)
Citations
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Proceedings ArticleDOI
02 Nov 2016-
TL;DR: This systematic literature review (SLR) focuses on the commercial impact of virtual reality and which field of study this technology is most used and shows that VR systems have a wide specter of applications and a significant potential for revolutionizing the authors' everyday life in the digital world.
Abstract: Virtual reality (VR) has challenged the way we perceive the world and user experience is being explored to achieve an immersive and effective experience. However, the commercial effects and impact of this technology lacks sufficient research. It is hence uncertain which role virtual reality has in information systems nowadays. This systematic literature review (SLR) focuses on the commercial impact of virtual reality and which field of study this technology is most used. To answer this question, a reference manual was used from literature review protocol standards and carried out. Results show that VR systems have a wide specter of applications and a significant potential for revolutionizing our everyday life in the digital world.

13 citations


Cites background from "Development of virtual reality base..."

  • ...It is also used for forensic psychiatry and medical education which provides opportunities for users to explore and learn without real-world consequences (training medical students with surgical simulations using robotics and VR systems [22], [11])....

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Book ChapterDOI
Katsuhiko Onishi1, Yohei Miki1, Keishi Okuda1, Masanao Koeda1  +1 moreInstitutions (1)
09 Jul 2017-
TL;DR: This surgery, a surgeon uses an endoscopic camera, which is limited view volume, and forceps into the patient body to perform laparoscopic surgery.
Abstract: Laparoscopic surgery is becoming popular as a minimally invasive operation. It is widely used as a technique for various kinds of surgical operation. In this surgery, a surgeon uses an endoscopic camera, which is limited view volume, and forceps into the patient body. It has been needed to support system such as navigation system.

2 citations


References
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Proceedings ArticleDOI
William E. Lorensen1, Harvey E. Cline1Institutions (1)
01 Aug 1987-
Abstract: We present a new algorithm, called marching cubes, that creates triangle models of constant density surfaces from 3D medical data. Using a divide-and-conquer approach to generate inter-slice connectivity, we create a case table that defines triangle topology. The algorithm processes the 3D medical data in scan-line order and calculates triangle vertices using linear interpolation. We find the gradient of the original data, normalize it, and use it as a basis for shading the models. The detail in images produced from the generated surface models is the result of maintaining the inter-slice connectivity, surface data, and gradient information present in the original 3D data. Results from computed tomography (CT), magnetic resonance (MR), and single-photon emission computed tomography (SPECT) illustrate the quality and functionality of marching cubes. We also discuss improvements that decrease processing time and add solid modeling capabilities.

12,274 citations


Journal ArticleDOI
01 Oct 2002-Annals of Surgery
Abstract: ObjectiveTo demonstrate that virtual reality (VR) training transfers technical skills to the operating room (OR) environment.Summary Background DataThe use of VR surgical simulation to train skills and reduce error risk in the OR has never been demonstrated in a prospective, randomized, blinded stud

2,438 citations


"Development of virtual reality base..." refers background in this paper

  • ...Surgical training is the inevitable part of refining surgical skill....

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Journal ArticleDOI
Abstract: Background: Interest in the training and evaluation of laparoscopic skills is extending beyond the realm of the operating room to the use of laparoscopic simulators. The purpose of this study was to develop a series of structured tasks to objectively measure laparoscopic skills. This model was then used to test for the effects of level of training and practice on performance. Methods: Forty-two subjects (6 each of surgical residents PGY1 to PGY5, 6 surgeons who practice laparoscopy and 6 who do not) were evaluated. Each subject viewed a 20-minute introductory video, then was tested performing 7 laparoscopic tasks (peg transfers, pattern cutting, clip and divide, endolooping, mesh placement and fixation, suturing with intracorporeal or extracorporeal knots). Performance was measured using a scoring system rewarding precision and speed. Each candidate repeated all 7 tasks and was rescored. Data were analyzed by linear regression to assess the relationship of performance with level of residency training for each task, and by ANOVA with repeated measures to test for effects of level of training, of repetition, and of the interaction between level of training and repetition on overall performance. Student's t test was used to evaluate differences between laparoscopic and nonlaparoscopic surgeons and between each of these groups and the PGY 5 level of surgical residents. Results: Significant predictors of overall performance were (a) level of training ( P = 0.002), (b) repetition ( P P = 0.001). There was also a significant interaction between level of training and the specific task on performance scores ( P = 0.006). When each task was evaluated individually for the 30 residents, 4 of the 7 tasks (tasks 1, 2, 6, 7) showed significant correlation between PGY level and score. A significant difference in performance scores between laparoscopic and nonlaparoscopic surgeons was seen for tasks 1, 2, and 6. Conclusions: A model was developed to evaluate laparoscopic skills. Construct validity was demonstrated by measuring significant improvement in performance with increasing residency training, and with practice. Further validation will require correlation of performance in the model with skill in vivo.

578 citations


Journal ArticleDOI
TL;DR: The aim of this review was to determine whether virtual reality (VR) training can supplement and/or replace conventional laparoscopic training in surgical trainees with limited or no Laparoscopic experience.
Abstract: Background: Surgical training has traditionally been one of apprenticeship. The aim of this review was to determine whether virtual reality (VR) training can supplement and/or replace conventional laparoscopic training in surgical trainees with limited or no laparoscopic experience. Methods: Randomized clinical trials addressing this issue were identified from The Cochrane Library trials register, Medline, Embase, Science Citation Index Expanded, grey literature and reference lists. Standardized mean difference was calculated with 95 per cent confidence intervals based on available case analysis. Results: Twenty-three trials (mostly with a high risk of bias) involving 622 participants were included in this review. In trainees without surgical experience, VR training decreased the time taken to complete a task, increased accuracy and decreased errors compared with no training. In the same participants, VR training was more accurate than video trainer (VT) training. In participants with limited laparoscopic experience, VR training resulted in a greater reduction in operating time, error and unnecessary movements than standard laparoscopic training. In these participants, the composite performance score was better in the VR group than the VT group. Conclusion: VR training can supplement standard laparoscopic surgical training. It is at least as effective as video training in supplementing standard laparoscopic training.

351 citations


"Development of virtual reality base..." refers background in this paper

  • ...Also, recently it has been said to be revolutionised by Robot Assisted Laparoscopic Surgery (RALS) [1]....

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Journal ArticleDOI
Abstract: Abstact Background Studies have demonstrated the beneficial effect of training novice laparoscopic surgeons using virtual reality (VR) simulators, although there is still no consensus regarding an optimal VR training curriculum. This study aims to establish and validate a structured VR curriculum to provide an evidence-based approach for laparoscopic training programmes. Methods The minimally invasive VR simulator (MIST-VR) has 12 abstract laparoscopic tasks, each at 3 graduated levels of difficulty (easy, medium, and hard). Twenty medical students completed 2 sessions of all tasks at the easy level, 10 sessions at the medium level, and finally 5 sessions of the 2 most complex tasks at the hard level. At the medium level, subjects were randomized into 2 equal groups performing either all 12 tasks (group A) or the 2 most complex tasks (group B). Performance was measured by time taken, path length, and errors for each hand. The results were compared between groups, and to those of 10 experienced laparoscopic surgeons. Results Baseline performance of both groups was similar at the easy level. At the medium level, learning curves for all 3 parameters reached plateau at the second (group A, P P Conclusion A graduated laparoscopic training curriculum enables trainees to familiarise, train and be assessed on laparoscopic VR simulators. This study can aid the incorporation of VR simulation into established surgical training programmes.

205 citations


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No. of citations received by the Paper in previous years
YearCitations
20171
20161