Model-based extraction of femoral medulla ducts from radiographic images
| Autor: | Lapo Governi, Franco Bartolini, Monica Carfagni |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2004 |
| Předmět: |
Least mean square algorithm
business.industry Computer science Radiography Software tool medicine.medical_treatment Human femur Surgical operation Prosthesis Signal Processing Computer-aided medicine Model-based image processing Medical images processing Surgery aiding tools Computer vision Computer Vision and Pattern Recognition Artificial intelligence Geometric modeling business |
| Popis: | The planning of the hip prosthesis surgical operation is usually performed manually by the surgeon, who ‘draws’ on a patient’s X-ray image the outline of the prosthetic stem in order to choose the one most suitable for the case at hand. In an attempt to give some repeatability and objectivity to the planning phase, a procedure has been devised for hip prosthesis’ stem selection based on the extraction of the femoral relevant outlines. This work presents a computer aided method aimed at automatically extracting the medulla duct outlines from a human femur radiographic image. The outlines are retrieved by referring to a suitable geometric model of the generic femoral cross-section; the projection function obtained by simulating the radiographic acquisition of such a model is fitted on the grey-level functions corresponding to the rows of the actual digitised radiographic image by means of a least squares algorithm. The resulting outlines are used in a software tool performing the hip prosthesis pre-operational planning. q 2003 Published by Elsevier B.V. |
| Databáze: | OpenAIRE |
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