Color-encoded distance visualization of cranial nerve-vessel contacts

Süßmuth, Jochen; Protogerakis, Wassilios-Daniele; Piazza, Alexander; Enders, Frank; Naraghi, Ramin; Greiner, Günther; Hastreiter, Peter

doi:10.1007/s11548-010-0410-2

Cited by 6 publications

(3 citation statements)

References 30 publications

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“…In previous work, color (and iso-contours in color distributions) has been shown to be quite effective at indicating where distance falls below a critical value, and in combination with color legends distance-based coloring even supports quantitative investigations [2,8,18]. As can be seen, however, such visualizations fail in communicating contextual information that is required to effectively interpret distance.…”

Section: Introduction and Related Workmentioning

confidence: 79%

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Distance Visualization for Interactive 3D Implant Planning

Dick

Burgkart

Westermann

2011

IEEE Trans. Visual. Comput. Graphics

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Fig. 1. Distance visualization for interactive (> 30 fps) preoperative implant planning using color coding on the implant surface (left), oriented distance glyphs (middle), and color coding on the implant surface and on a set of additional axial slices (right).Abstract-An instant and quantitative assessment of spatial distances between two objects plays an important role in interactive applications such as virtual model assembly, medical operation planning, or computational steering. While some research has been done on the development of distance-based measures between two objects, only very few attempts have been reported to visualize such measures in interactive scenarios. In this paper we present two different approaches for this purpose, and we investigate the effectiveness of these approaches for intuitive 3D implant positioning in a medical operation planning system. The first approach uses cylindrical glyphs to depict distances, which smoothly adapt their shape and color to changing distances when the objects are moved. This approach computes distances directly on the polygonal object representations by means of ray/triangle mesh intersection. The second approach introduces a set of slices as additional geometric structures, and uses color coding on surfaces to indicate distances. This approach obtains distances from a precomputed distance field of each object. The major findings of the performed user study indicate that a visualization that can facilitate an instant and quantitative analysis of distances between two objects in interactive 3D scenarios is demanding, yet can be achieved by including additional monocular cues into the visualization.

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Section: Introduction and Related Workmentioning

confidence: 79%

“…One approach for the visualization of the distances between two surfaces is to display at each surface point the distance to the nearest point on the respective other surface via color coding [2,8,18]. This can be realized by using a 3D distance field [7] for each of the two surfaces.…”

Section: Slice-based Distance Visualizationmentioning

confidence: 99%

Distance Visualization for Interactive 3D Implant Planning

Dick

Burgkart

Westermann

2011

IEEE Trans. Visual. Comput. Graphics

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“…The missing vertebral arteries are related to flow artifacts (a3) protocolized MR data and findings of MVD revealing high prediction values for high grades of compression and lower values with possible false positives in low-grade compression [3]. With regard to classification, we have used colorencoded distance information to calculate the vessel-nerve contact area and to analyze the probability of its extent in an earlier work [20].…”

Section: Discussionmentioning

confidence: 99%

Data fusion and 3D visualization for optimized representation of neurovascular relationships in the posterior fossa

et al. 2022

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Background Reliable 3D visualization of neurovascular relationships in the posterior fossa at the surface of the brainstem is still critical due to artifacts of imaging. To assess neurovascular compression syndromes more reliably, a new approach of 3D visualization based on registration and fusion of high-resolution MR data is presented. Methods A total of 80 patients received MRI data with 3D-CISS and 3D-TOF at 3.0 Tesla. After registration and subsequent segmentation, the vascular information of the TOF data was fused into the CISS data. Two 3D visualizations were created for each patient, one before and one after fusion, which were verified with the intraoperative situation during microvascular decompression (MVD). The reproduction quality of vessels was evaluated with a rating system. Results In all cases, the presented approach compensated for typical limitations in the 3D visualization of neurovascular compression such as the partial or complete suppression of larger vessels, suppression of smaller vessels at the CSF margin, and artifacts from heart pulsation. In more than 95% of the cases of hemifacial spasm and glossopharyngeal neuralgia, accurate assessment of the compression was only possible after registration and fusion. In more than 50% of the cases with trigeminal neuralgia, the presented approach was crucial to finding the actually offending vessel. Conclusions 3D visualization of fused image data allows for a more complete representation of the vessel-nerve situation. The results from this approach are reproducible and the assessment of neurovascular compression is safer. It is a powerful tool for planning MVD.

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Distance and force visualisations for improved simulation of intracranial aneurysm clipping

2021

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Purpose The treatment of cerebral aneurysms shifted from microsurgical to endovascular therapy. But for some difficult aneurysm configurations, e.g. wide neck aneurysms, microsurgical clipping is better suited. From this combination of limited interventions and the complexity of these cases, the need for improved training possibilities for young neurosurgeons arises. Method We designed and implemented a clipping simulation that requires only a monoscopic display, mouse and keyboard. After a virtual craniotomy, the user can apply a clip at the aneurysm which is deformed based on a mass–spring model. Additionally, concepts for visualising distances as well as force were implemented. The distance visualisations aim to enhance spatial relations, improving the navigation of the clip. The force visualisations display the force acting on the vessel surface by the applied clip. The developed concepts include colour maps and visualisations based on rays, single objects and glyphs. Results The concepts were quantitatively evaluated via an online survey and qualitatively evaluated by a neurosurgeon. Regarding force visualisations, a colour map is the most appropriate concept. The necessity of distance visualisations became apparent, as the expert was unable to estimate distances and to properly navigate the clip. The distance rays were the only concept supporting the navigation appropriately. Conclusion The easily accessible surgical training simulation for aneurysm clipping benefits from a visualisation of distances and simulated forces.

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Color-encoded distance visualization of cranial nerve-vessel contacts

Abstract: Color-encoded distance information significantly improves the perceptibility of potential nerve-vessel contacts. This method contributes to a better understanding of the complex anatomical situation at the surface of the brainstem and assists in planning of surgery.

Cited by 6 publications

References 30 publications

Distance Visualization for Interactive 3D Implant Planning

Distance Visualization for Interactive 3D Implant Planning

Data fusion and 3D visualization for optimized representation of neurovascular relationships in the posterior fossa

Distance and force visualisations for improved simulation of intracranial aneurysm clipping

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