Laparoscopy Clinical Trial
— LARAOfficial title:
Monocentric Prospective Randomized Study on the Influence of On-screen Use of a Virtual 3-dimensional Liver Model Reconstructed From CT Data on Spatial Perception During Laparoscopy on the Liver Phantom.
Procedure preparation and accurate knowledge of the specific anatomy is an integral part of performing minimally invasive procedures. Due to the complexity with high variability and the non-visibility of the vascular structures, the liver poses a particular challenge. Therefore medical students and experienced surgeons will receive standardized, structured training on liver anatomy, the use of laparoscopic ultrasound and the application and use of CT data sets and the virtual 3D liver model. This training will be evaluated by questionnaires. Both groups then carry out a series of localization exercises on an artificial liver phantom: tumor imitations, which are displayed in the image(3D virtaul mdoel or 2D-CT-Data-Set), have to be found in the liver phantom laparoscopically using ultrasound. In each round, different scenarios are worked on, once without and then with the support of the virtual 3D liver model. The virtual 3D model can be displayed directly on the laparoscopic monitor using a display software specially developed for the trial and can be manipulated by the subjects. The aim of the study is to provide evidence that the availability and use of a virtual 3D model (augmented reality) leads to a significantly improved spatial perception of the subjects during laparoscopy of the liver. In addition, the subjectively perceived cognitive load of the subjects during the test run with and without the support of the virtual 3D model is surveyed and the learning success is evaluated.
Status | Not yet recruiting |
Enrollment | 72 |
Est. completion date | March 1, 2024 |
Est. primary completion date | December 1, 2023 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - medical student of University of Cologne OR medical doctor in a surgical specialty - informed consent signed Exclusion Criteria: - known and not correctable deficit of stereoscopic view - for medical students: experience with laparoscopy or laparoscopy simulators |
Country | Name | City | State |
---|---|---|---|
Germany | University of Cologne, Department of General, Visceral and Cancer Surgery | Cologne |
Lead Sponsor | Collaborator |
---|---|
Universitätsklinikum Köln |
Germany,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Number of correctly identified targets | The number of correctly spatially identified targets (tumors in the liver phantom) | immediately after tasks are performed, Day 1 | |
Primary | Time required | The time required to localize the specified target structures (tumors in the live phantom) | immediately after tasks are performed, Day 1 | |
Secondary | Task Load Index | The specific cognitive effort of the subject (measured using the NASA Task Load Index) | immediately after tasks are performed, Day 1 | |
Secondary | Modification of procedure planning | The modification of the initially prepared procedure planning when the virtual 3D model is available | immediately after tasks are performed with both methods, Day 1 | |
Secondary | Learning curve | Qualitative evaluation of the learning curve and success of the subjects | immediately after tasks are performed with both methods, Day 1 |
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