Image Processing

Optical measurement of dimensional parameters of the breast with subjects in prone position

[+] Author Affiliations
Ann-Christin Roessler, Willi Kalender

University of Erlangen-Nuremberg, Institute of Medical Physics, Henkestrasse 91, Erlangen 91052, Germany

Felix Althoff

CT Imaging GmbH, Henkestrasse 91, Erlangen 91052, Germany

Florian Jaeger

Explius GmbH, Geuderstrasse 13, Nuremberg 90489, Germany

Evelyn Wenkel

Radiological Institute, University Hospital of Erlangen, Universitaetsstrasse 21-23, Erlangen 91054, Germany

J. Med. Imag. 2(3), 034001 (Jul 31, 2015). doi:10.1117/1.JMI.2.3.034001
History: Received February 23, 2015; Accepted June 30, 2015
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Abstract.  Various applications require information on breast parameters, such as breast length and volume. An optical system was designed and tested for measuring these parameters with subjects in a prone position. The study results were used for optimizing patient positioning and handling for a future breast computed tomography (BCT) system. Measurements were conducted using an optical measurement system. To test the functionality and accuracy of the system, measurements were performed using reference phantoms. Additionally, 20 women and 5 men were examined to calculate breast parameters in alternative positions and breathing states. The results of the optical measurements were compared with magnetic resonance imaging (MRI) measurements. Volume and length of the reference phantoms were determined with errors below 2%. The patient study demonstrated a mean breast volume of 530.7 ml for women during normal breathing. During an exhalation state, breast volume increased significantly by 17.7 ml in comparison with normal breathing. Differences with MRI measurements were found to be 3% for breast length and 9% for breast volume on average. The proposed optical measurement system was found to be suitable for measuring the dimensional parameters of the breast in a prone position and provides a tool for evaluating breast coverage for BCT.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Ann-Christin Roessler ; Felix Althoff ; Florian Jaeger ; Willi Kalender and Evelyn Wenkel
"Optical measurement of dimensional parameters of the breast with subjects in prone position", J. Med. Imag. 2(3), 034001 (Jul 31, 2015). ; http://dx.doi.org/10.1117/1.JMI.2.3.034001


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