Bayesian inference for model-based segmentation of computed radiographs of the hand
| Autor: | Dmitry Vosky, Vera Michele Shadle, John Dye, Scott E. Johnston, Tod S. Levitt, Marcus W. Hedgcock |
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| Rok vydání: | 1993 |
| Předmět: |
Models
Anatomic Models Statistical Computer science business.industry Arthritis Feature extraction ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Probabilistic logic Medicine (miscellaneous) Bayes Theorem Image processing Pattern recognition Image segmentation Hand Bayesian inference Image (mathematics) Radiography Artificial Intelligence Image Processing Computer-Assisted Humans Segmentation Computer vision Artificial intelligence business Reliability (statistics) |
| Zdroj: | Artificial Intelligence in Medicine. 5:365-387 |
| ISSN: | 0933-3657 |
| DOI: | 10.1016/0933-3657(93)90022-u |
| Popis: | We present a method for medical image understanding by computer that uses model-based, hierarchical Bayesian inference to accurately segment imaged anatomy. A first application is a prototype system that automatically segments and measures symptoms of arthridities in hand radiographs. This is potentially useful in radiological diagnosis and tracking of arthridities. Key steps of the model-based, Bayesian inference approach are: (1) prediction of imagery features from 3D models of anatomy, parameterized by population statistics, (2) local image feature extraction in predicted sub-regions, and (3) the use of a probabilistic calculus to accrue results of image processing and image feature matching procedures in support or denial of hypotheses about the imaged anatomy. The prototype system for hand radiograph analysis accurately segments normal and somewhat degenerated hand anatomy. Results are shown of the ability of the automated system to 'fail soft', recognizing when segmentation is inadequate for accurate measurement. This self evaluation capability improves reliability of measurements for potential clinical use. |
| Databáze: | OpenAIRE |
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