BCT Boost Segmentation with U-net in TensorFlow

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Grzegorz Wieczorek
Izabella Antoniuk
Michał Kruk
Jarosław Kurek
Arkadiusz Orłowski
Jakub Pach
Bartosz Świderski

Keywords : breast cancer, breast conserving therapy, image segmentation, U-net, Keras, TensorFlow
In this paper we present a new segmentation method meant for boost area that remains after removing the tumour using BCT (breast conserving therapy). The selected area is a region on which radiation treatment will later be made. Consequently, an inaccurate designation of this region can result in a treatment missing its target or focusing on healthy breast tissue that otherwise could be spared. Needless to say that exact indication of boost area is an extremely important aspect of the entire medical procedure, where a better definition can lead to optimizing of the coverage of the target volume and, in result, can save normal breast tissue. Precise definition of this area has a potential to both improve the local control of the disease and to ensure better cosmetic outcome for the patient. In our approach we use U-net along with Keras and TensorFlow systems to tailor a precise solution for the indication of the boost area. During the training process we utilize a set of CT images, where each of them came with a contour assigned by an expert. We wanted to achieve a segmentation result as close to given contour as possible. With a rather small initial data set we used data augmentation techniques to increase the number of training examples, while the final outcomes were evaluated according to their similarity to the ones produced by experts, by calculating the mean square error and the structural similarity index (SSIM).

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Wieczorek, G., Antoniuk, I., Kruk, M., Kurek, J., Orłowski, A., Pach, J., & Świderski, B. (2019). BCT Boost Segmentation with U-net in TensorFlow. Machine Graphics and Vision, 28(1/4), 25–34. https://doi.org/10.22630/MGV.2019.28.1.3

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