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Reconstruction of Three-dimensional Model of Normal Female Pelvic Cavity Based on Magnetic Resonance Imaging

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7 Author(s)
Fang Pu ; Beihang Univ., Beijing ; Dan Jin ; Shuyu Li ; Deyu Li
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Obstetric prognosis is important to both maternal and fetal health. An accurate three-dimensional pelvic model is necessary for offering an advisable suggestion or making a correct decision before operations. Although several models have already been created for the purpose of demonstrating the anatomic structure and measuring the volume of pelvic floor muscles, none of these models includes all the structures needed for biomechanical analysis with finite element method (FEM). The primary goal of this project is to reconstruct a comprehensive magnetic resonance imaging (MRI) -based three-dimensional pelvic model, including both bony (ilium, ischium, fifth lumbar, pubis, sacrum, coccyx, part of femurs) and soft tissues (uterus, rectum, bladder). Firstly, T2-weighted MRI images were acquired, and were segmented semi-automatically. Then, three-dimensional models of each organ and structure were constructed separately and integrated into one model. After that, the whole model was smoothed, while the crucial vertices and sharp edges were kept. Finally, three-dimensional pelvimetry was implemented on the constructed model. The constructed model and measured parameters will be used for future biomechanical simulation of delivery process.

Published in:

Complex Medical Engineering, 2007. CME 2007. IEEE/ICME International Conference on

Date of Conference:

23-27 May 2007