DocumentCode :
963623
Title :
Sinus Endoscopy - Application of Advanced GPU Volume Rendering for Virtual Endoscopy
Author :
Kruger, A. ; Kubisch, Christoph ; Preim, Bernhard ; Strauß, Gero
Author_Institution :
Dept. of Simulation & Graphics, Otto-von-Guericke-Univ. of Magdeburg, Magdeburg
Volume :
14
Issue :
6
fYear :
2008
Firstpage :
1491
Lastpage :
1498
Abstract :
For difficult cases in endoscopic sinus surgery, a careful planning of the intervention is necessary. Due to the reduced field of view during the intervention, the surgeons have less information about the surrounding structures in the working area compared to open surgery. Virtual endoscopy enables the visualization of the operating field and additional information, such as risk structures (e.g., optical nerve and skull base) and target structures to be removed (e.g., mucosal swelling). The Sinus Endoscopy system provides the functional range of a virtual endoscopic system with special focus on a realistic representation. Furthermore, by using direct volume rendering, we avoid time-consuming segmentation steps for the use of individual patient datasets. However, the image quality of the endoscopic view can be adjusted in a way that a standard computer with a modern standard graphics card achieves interactive frame rates with low CPU utilization. Thereby, characteristics of the endoscopic view are systematically used for the optimization of the volume rendering speed. The system design was based on a careful analysis of the endoscopic sinus surgery and the resulting needs for computer support. As a small standalone application it can be instantly used for surgical planning and patient education. First results of a clinical evaluation with ENT surgeons were employed to fine-tune the user interface, in particular to reduce the number of controls by using appropriate default values wherever possible. The system was used for preoperative planning in 102 cases, provides useful information for intervention planning (e.g., anatomic variations of the Rec. Frontalis), and closely resembles the intraoperative situation.
Keywords :
data visualisation; endoscopes; medical image processing; rendering (computer graphics); surgery; virtual reality; ENT surgeons; advanced GPU volume rendering; endoscopic sinus surgery; graphical processing unit; image quality; individual patient datasets; risk structures; sinus endoscopy system; virtual endoscopic system; Biomedical optical imaging; Computer graphics; Endoscopes; Image quality; Image segmentation; Rendering (computer graphics); Skull; Surgery; System analysis and design; Visualization; Index Terms— medical visualization; operationplanning; sinus surgery; virtual endoscopy; volume rendering; Algorithms; Endoscopy; Humans; Image Enhancement; Image Interpretation, Computer-Assisted; Imaging, Three-Dimensional; Paranasal Sinuses; Pattern Recognition, Automated; Reproducibility of Results; Sensitivity and Specificity; Surgery, Computer-Assisted; Tomography, X-Ray Computed;
fLanguage :
English
Journal_Title :
Visualization and Computer Graphics, IEEE Transactions on
Publisher :
ieee
ISSN :
1077-2626
Type :
jour
DOI :
10.1109/TVCG.2008.161
Filename :
4658167
Link To Document :
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