Breast Reconstruction Planning and Assessment Using Three-Dimensional Surface Scans
Purpose: Breast-conserving therapy can result in significant breast deformity in up to 40 percent of patients. Breast reconstruction to correct these deformities is considered an integral part of breast cancer care. Monitoring the differences in breast volume and visualizing shape differences during the reconstruction process could help optimize surgical planning and efficiency of procedures, such as autologous fat grafting. The purpose of this thesis was to develop and validate a clinical workflow and accompanying software to compute breast volume differences and visualize shape differences in post-breast-conserving therapy patients. Methods: A workflow to efficiently capture a three-dimensional surface scan of a patient’s torso during a clinical visit was designed. Custom software was developed to compute differences in breast volume and visualize breast shape differences using the three-dimensional surface scans. The workflow and accompanying software were validated in a study conducted with fourteen patients. Each patient was scanned five times to assess the reproducibility of the computation of breast volume differences across all the scans. The breast shape visualizations were also computed and then validated by the breast reconstruction surgeon. Results: The average coefficient of variance for the same breast volume differences was 1.49%. The average normalized standard deviation for the left-right breast volume differences was 1.17%. The breast shape visualizations qualitatively reflected the expected dissimilarities in breast shape for all patients. Conclusion: A workflow and software to compute the breast volume differences and visualize the shape dissimilarities of post-breast-conserving therapy patients were created. The reproducibility of our results suggests the methods are ready to be used in the clinical setting to assist in surgical planning of fat grafting for reconstruction of breast deformities.
URI for this recordhttp://hdl.handle.net/1974/26146
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