Surface driven biomechanical breast image registration

Björn Eiben; Vasileios Vavourakis; John H. Hipwell; Sven Kabus; Cristian Lorenz; Thomas Buelow; Norman R. Williams; M. Keshtgar; David J. Hawkes

doi:10.1117/12.2216728

18 March 2016 Surface driven biomechanical breast image registration

Björn Eiben, Vasileios Vavourakis, John H. Hipwell, Sven Kabus, Cristian Lorenz, Thomas Buelow, Norman R. Williams, M. Keshtgar, David J. Hawkes

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Proceedings Volume 9786, Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling; 97860W (2016) https://doi.org/10.1117/12.2216728
Event: SPIE Medical Imaging, 2016, San Diego, California, United States

Abstract

Biomechanical modelling enables large deformation simulations of breast tissues under different loading conditions to be performed. Such simulations can be utilised to transform prone Magnetic Resonance (MR) images into a different patient position, such as upright or supine. We present a novel integration of biomechanical modelling with a surface registration algorithm which optimises the unknown material parameters of a biomechanical model and performs a subsequent regularised surface alignment. This allows deformations induced by effects other than gravity, such as those due to contact of the breast and MR coil, to be reversed. Correction displacements are applied to the biomechanical model enabling transformation of the original pre-surgical images to the corresponding target position.

The algorithm is evaluated for the prone-to-supine case using prone MR images and the skin outline of supine Computed Tomography (CT) scans for three patients. A mean target registration error (TRE) of 10:9 mm for internal structures is achieved. For the prone-to-upright scenario, an optical 3D surface scan of one patient is used as a registration target and the nipple distances after alignment between the transformed MRI and the surface are 10:1 mm and 6:3 mm respectively.

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Björn Eiben, Vasileios Vavourakis, John H. Hipwell, Sven Kabus, Cristian Lorenz, Thomas Buelow, Norman R. Williams, M. Keshtgar, and David J. Hawkes "Surface driven biomechanical breast image registration", Proc. SPIE 9786, Medical Imaging 2016: Image-Guided Procedures, Robotic Interventions, and Modeling, 97860W (18 March 2016); https://doi.org/10.1117/12.2216728

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