Investigation into accuracy and reproducibility of a 3D breast imaging system using multiple stereo cameras

Henseler, H., Khambay, B.S., Bowman, A., Siebert, J.P., Oehler, S., Ju, X., Ayoub, A. and Ray, A.K. (2011) Investigation into accuracy and reproducibility of a 3D breast imaging system using multiple stereo cameras. Journal of Plastic, Reconstructive and Aesthetic Surgery, 64(5), pp. 577-582. (doi:10.1016/j.bjps.2010.08.044)

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Abstract

Background: The aim of this study was to evaluate the validity of a three-dimensional (3D) multiple stereo camera system for objective breast assessment. Methods: A multiple stereo camera system, which consisted of four pods and eight cameras, two cameras on each pod, developed by Glasgow University, was used. Nine specially shaped plaster breast models were captured once, 3Dmodels were constructed and the volume of each plaster model was measured 10 times by the breast analysis tool (BAT) software. A comparison was conducted with water displacement method, and measurements were repeated 10 times. The breast of six live volunteers was captured six times; from each breast capture, a 3D model was constructed and the volume was measured with BAT software. Breast volume assessment by the water displacement method was repeated six times. Results: In all plaster casts, the discrepancies in volume measurements between 3D imaging and water displacement methods did not exceed 40cc. The overall mean relative difference was 5%. The differences of the two methods were not significant at p=0.189, overall mean difference: 11.1cc and 95% confidence interval (CI) was (−6.732, 28.976). In the live models, the differences in breast volume measurements between the 3D imaging and water displacement methods were significant at p≤0.017, overall mean difference: 207.05cc and 95% CI (56.12, 357.98). Measurements by 3D imaging were consistently smaller. In the live models, 3D imaging overall was a more reproducible method for measuring breast volume than the water displacement method with a standard deviation of 36 units cc−1 and 62.6 units cc−1, respectively. Conclusions: The 3D breast imaging system using multiple stereo cameras was accurate for measuring the volumes of breast-shaped plaster models, and it was more reproducible than the water displacement method in live models. 3D imaging is a reliable method for the comparative asse

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Ju, Dr Xiangyang and Ayoub, Professor Ashraf and Ray, Mr Arup and Oehler, Ms Susanne and Siebert, Dr Jan and Khambay, Dr Balvinder
Authors: Henseler, H., Khambay, B.S., Bowman, A., Siebert, J.P., Oehler, S., Ju, X., Ayoub, A., and Ray, A.K.
College/School:College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing > Dental School
College of Science and Engineering > School of Mathematics and Statistics > Statistics
College of Science and Engineering > School of Psychology
Journal Name:Journal of Plastic, Reconstructive and Aesthetic Surgery
Publisher:Churchill Livingstone
ISSN:1748-6815
ISSN (Online):1532-1959
Published Online:13 October 2010

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