Technical accuracy of the integration of an external ultrasonography system into a navigation platform: effects of ultrasonography probe registration and target detection
| Autor: | Frederic A Wanis, Marcus H. T. Reinges, Lars Wessels, Andreas Jödicke, Eberhard Uhl |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Accuracy and precision
Phantoms Imaging business.industry Orientation (computer vision) Coordinate system Reproducibility of Results Navigation system Imaging phantom 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Ultrasound probe Software Surgery Computer-Assisted Humans Medicine Surgery Computer vision Neurology (clinical) Artificial intelligence Ultrasonography business 030217 neurology & neurosurgery |
| Zdroj: | Acta Neurochirurgica. 160:305-316 |
| ISSN: | 0942-0940 0001-6268 |
| DOI: | 10.1007/s00701-017-3416-5 |
| Popis: | Intraoperative navigated ultrasonography has reached clinical acceptance, while published data for the accuracy of some systems are missing. We technically quantified and optimised the accuracy of the integration of an external ultrasonography system into a BrainLab navigation system. A high-end ultrasonography system (Elegra; Siemens, Erlangen, Germany) was linked to a navigation system (Vector Vision; BrainLab, Munich, Germany). In vitro accuracy and precision was calculated from differences between a real world target (high-precision crosshair phantom) and the ultrasonography image of this target in the navigation coordinate system. The influence of the intrinsic component of the calibration phantom (for ultrasonography probe registration), type of target definition (manual versus automatic) and orientation of the ultrasound probe in relation to the navigation tracking device on accuracy and precision were analysed in different settings (100 measurements for each setting) resembling clinically relevant scenarios in the neurosurgical operating theatre. Line-of-sight angles of 45°, 62° and 90° for the optical tracking of the navigated ultrasonography probe and a distance of 1.8 m revealed best accuracy and precision. Technical accuracy of the integration of ultrasonography into a standard navigation system is high [Euclidean error: median, 0.79 mm; mean, 0.89 ± 0.42 mm for 62° angle; median range: 1.16–1.46 mm; mean range (±SD): 1.22 ± 0.32 mm to 1.46 ± 0.55 mm for grouped analysis of all angles tested]. Software-based automatic target definition improved precision significantly (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink