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Abstract #4204

Quantitative Assessments of Facial Soft-Tissue Mobility by means of Watershed Segmentation and Constrained Elastic Registration in Upright Accelerated 3D MRI

Marco Vicari 1 , Stefan Heldmann 2 , Hans Meine 1 , Frank Hug 3 , Juergen Hennig 4 , and Niklas Iblher 3

1 Fraunhofer MEVIS, Bremen, Germany, 2 Fraunhofer MEVIS, Luebeck, Germany, 3 Department of Plastic and Hand Surgery, University Medical Center Freiburg, Freiburg, Germany, 4 Department of Radiology, Medical Phyisics, University Medical Center Freiburg, Freiburg, Germany

Reconstructive and aesthetic facial plastic surgery can strongly benefit from quantitative assessments of the facial soft-tissue mobility. This clinical challenge can be risen by a modern and original comprehensive imaging method, joining advanced MRI and image analysis. In particular, 3D accelerated upright MRI provides, in reasonable acquisition times, high-resolution and high-contrast facial soft-tissue depiction in natural stance under physiological weight-bearing. Moreover, soft-tissue layer watershed segmentations and their constrained elastic registration between lying and sitting positions give access to full quantitative information about the complex 3D anatomy of the face structure, as a function of aging and gravity.

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