# Implementation Details for Controlling Contactless 3D Virtual Endoscopy
## 6 Conclusions  
In the present medical world, without touching the screen during the contactless visualization of medical datasets [2], we enable virtual diagnostics and surgery of 3D spatial data [3], and we can shape the visualization in a way that does not exist in reality.  
\begin{table}
\begin{tabular}{c c c} \hline \hline \multirow{2}{*}{**Attempts**} & **The Proposed** & **Standard Procedure** \\  & **System (in Seconds)** & **(in Seconds)** \\ \hline Attempt 1 (Medical Specialist 1; 250 lux & 4.5 & 8.9 \\ background light; Alpha ch. = 0.8; Delta ch. = 35) & 4.4 & 9.1 \\ \hline Attempt 2 (Medical Specialist 1; 500 lux & 4.4 & 9.5 \\ background light; Alpha ch. = 0.5; Delta ch. = 20) & 5 & 9.5 \\ \hline Attempt 4 (Medical Specialist 2; 500 lux & 5.4 & 10 \\ background light; Alpha ch. = 0.5; Delta ch. = 20) & 3.7 & 8.7 \\ \hline Attempt 5 (Medical Specialist 3; 250 lux & 4.4 & 8.9 \\ background light; Alpha ch. = 0.8; Delta ch. = 35) & 4.4 & 9.1 \\ \hline Attempt 6 (Medical Specialist 3; 500 lux & 5 & 9 \\ background light; Alpha ch. = 0.5; Delta ch. = 20) & 5 & 9 \\ \hline \hline \end{tabular}
\end{table}
Table 1: Comparison of the time needed for visualization of the maxillary sinus from the initial outer view of a skull with our proposed system for virtual endoscopy and standard procedure with the help of a medical assistant.  
We also proved that it is possible to use technology to make something that we cannot see in the real world, visible to doctors/surgeons, i.e., to experience and understand what we cannot realistically see, or what does not really exist as shown in touch-free navigation through radiological images presented in [4].  
In this way, we \"understand\" the 3D spatial relationships of the operating field as they are in human beings. So, with our plug-ins, we give CS the chance to be seen and have its story told with interaction with medical data through our interface. This is some kind of surgical \"fly\" with CSI Surgeons reported that the interface was intuitive and easy to use. Removing the man-in-the-middle in interaction with the visualization system by controlling the contactless system speeds up the whole process by on average 50% and removes any interaction with a medical assistant who was in charge of controlling the visualization system during the surgery. Moreover, surgeons reported less stress during the navigation because they felt that everything is under their control.  
In conclusion, the use of augmented spatial anatomic elements that simultaneously overlap the control field to visualize 3D medical datasets in a contactless way enabled higher intraoperative safety, reduced operating times, and provided higher fidelity through our user-friendly interface.  
Conceptualization, M.Z. and I.K.; Formal analysis, M.Z.; Funding acquisition, M.Z.; Investigation, I.K. and A.M.; Project administration, M.Z.; Resources, M.Z. and I.K.; Software, A.M.; Supervision, Z.M.; Validation, M.Z., I.K. and Z.M.; Visualization, A.M.; Writing--original draft, M.Z.; Writing--review & editing, I.K. All authors have read and agreed to the published version of the manuscript. This research was funded by EIT Health RIS Innovation 2020 Grant. Informed Consent Statement: Informed consent was obtained from all subjects involved in the study. Conflicts of Interest: The authors declare no conflict of interest.