Abstract
Purpose
To evaluate feasibility of automatic software-based path proposals for CT-guided percutaneous biopsies.
Methods
Thirty-three patients (60 \(\pm \) 12 years) referred for CT-guided biopsy of focal liver lesions were consecutively included. Pre-interventional CT and dedicated software (FraunhoferMeVis Pathfinder) were used for (semi)automatic segmentation of relevant structures. The software subsequently generated three path proposals in downward quality for CT-guided biopsy. Proposed needle paths were compared with consensus proposal of two experts (comparable, less suitable, not feasible). In case of comparable results, equivalent approach to software-based path proposal was used. Quality of segmentation process was evaluated (Likert scale, 1 \(=\) best, 6 \(=\) worst), and time for processing was registered.
Results
All biopsies were performed successfully without complications. In 91 % one of the three automatic path proposals was rated comparable to experts’ proposal. None of the first proposals was rated not feasible, and 76 % were rated comparable to the experts’ proposal. 7 % automatic path proposals were rated not feasible, all being second choice (\(n=1\)) or third choice (\(n=6\)). In 79 %, segmentation at least was good. Average total time for establishing automatic path proposal was 42 \(\pm \) 9 s.
Conclusion
Automatic software-based path proposal for CT-guided liver biopsies in the majority provides path proposals that are easy to establish and comparable to experts’ insertion trajectories.
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Acknowledgments
The work was partially funded by a Grant of Siemens AG Healthcare Sector Imaging and IT Division Computed Tomography, Forchheim.
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The following authors of this manuscript declare relationships with the following companies: Christian Schumann is employed by Fraunhofer MEVIS, Institute for Medical Image Computing, Bremen, Germany. Matthias Niethammer is employed by Siemens AG Healthcare, Forchheim, Germany. Jennifer Aumann is employed by we-do-IT, Melbourne, Australia The remaining authors declare that they have no conflict of interest.
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Helck, A., Schumann, C., Aumann, J. et al. Automatic path proposal computation for CT-guided percutaneous liver biopsy. Int J CARS 11, 2199–2205 (2016). https://doi.org/10.1007/s11548-015-1349-0
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DOI: https://doi.org/10.1007/s11548-015-1349-0