| Autor: |
Josef Kozak, Katarzyna Otto, Peter Keppler, K. Krysztoforski, Paweł Krowicki, Ewelina Świątek-Najwer |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Advances in Intelligent Systems and Computing ISBN: 9783319065953 |
| Popis: |
The aim of this paper was to analyze the spatial geometry of objects basing on ultrasound images recorded by free-hand probe. The data analysis consists of three phases: data recording, contour segmentation and triangulation. Several algorithms of segmentation have been tested to recognize the object’s contour. To analyze the efficiency of triangulation algorithms, the similarities of obtained 3D models to the reference CT-based 3D model were evaluated. For objective and quantitative evaluation of obtained models the Hausdorff’s distances were calculated for compared surfaces. The results revealed higher efficiency of greedy projection method than the 2D Delaunay’s Triangulation applied for projected set of points in step by step procedure for the same cloud of points obtained as the result of user controlled segmentation procedure. The free hand ultrasonography can be applied to measure the spatial tissue shape for virtual planning of surgery without radiation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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