Model-based prediction of phalanx radiograph boundaries

Tod S. Levitt; Marcus W. Hedgcock M.D.; D. N. Vosky; Vera Michele Shadle

doi:10.1117/12.154555

14 September 1993 Model-based prediction of phalanx radiograph boundaries

Tod S. Levitt, Marcus W. Hedgcock M.D., D. N. Vosky, Vera Michele Shadle

Proceedings Volume 1898, Medical Imaging 1993: Image Processing; (1993) https://doi.org/10.1117/12.154555
Event: Medical Imaging 1993, 1993, Newport Beach, CA, United States

Abstract

In this study we use a strong model of the center of the phalanx in hand radiographs to predict continuation of the phalanx boundary. The center phalanx is robustly segmented using conventional approaches. Estimating tangents allows us to find the minimum width of the phalanx by parallel tangent lines. This in turn predicts the phalanx 'center'. The phalanx boundaries are modeled as cubic splines, and the coronal cross-section is modeled as a hemi- ellipse. Using initial localization from the phalanx center and the above parametric models, the model of radiographic imaging is used to predict the continuation of the boundary. Results are shown for least squared error of model spline fits to continuation of the phalanx boundary anchored by initial match on the center of the projected phalanx.

Citation Download Citation

Tod S. Levitt, Marcus W. Hedgcock M.D., D. N. Vosky, and Vera Michele Shadle "Model-based prediction of phalanx radiograph boundaries", Proc. SPIE 1898, Medical Imaging 1993: Image Processing, (14 September 1993); https://doi.org/10.1117/12.154555

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