Summary
Pelvimetry and fetometry give static information about the cephalopelvic dimensions. In order to investigate dynamic aspects of cephalopelvic deformation during labour a method for dynamic biomechanical analysis is presented. MRI pixel matrices of a female pelvis and a foetus (1.5 Tesla) are color-coded and line datas (“Marching Cubes”) are created. After sectional attribution of the resulting polygones a three-dimensional mesh of “Finite Elements” is produced, which allows analyses of deformation. The analyses are performed on a CRAY XMP computer (EDS Germany) using I-DEAS, ABAQUS and especially developed software. First analyses of deformation stress show, that under foetal head moulding conditions being considered as normal sensitive structures (cerebellum, brain stem, ventricles) are within the maximum isobars of 480–780 kPa. Maternal soft tissues are within a range of 820 kPa.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Argyris, J., H.P. Mlejnek: Die Methode der Finiten Elemente. Bd.I-III, Fiedr.Vieweg, Braunschweig/Wiesbaden 1986–88.
Bathe, K.J.: Finite-Elemente-Methoden: Matrizen und lineare Algebra, die Methode der finiten Elemente, Lösung von Gleichgewichtsbedingungen und Bewegungsgleichungen. Springer, Berlin/Heidelberg/New York 1990.
Becker, E.B., G.F. Carey, J.T. Oden: Finite elements. Vol.I-VI Prentice-Hall Inc., Englewood Cliffs, New Jersey 1981–1985.
Courant, R., D. Hilbert: Methoden der Mathematischen Physik. Bd.I-II. Springer, Berlin 1967.
Endo, B., K. Adachi: Biomechanical simulation study on the forms of the frontal bone and facial bones of the recent human facial skeleton by using a two-dimensional frame modell with stepwise variable cross-section members. Okajimas Folkia Anat. Jpn. 64 (1988) 6.
Haskell, B.: Computer-aided modelling in the assessment of the biomechanical determinants of diverse skeletal patterns. Amer. J. Orthodont. 89 (1986) 363–382.
Jensen, A.:Das Hirnblutungsrisiko bei Früh- und Reifgeborenen. Geburtsh. Frauenheilk. 52 (1992) 6–20.
Lehmann, K.J., A. Wischnik, E. Nalepa, K.U. Wentz, M. Georgi Entwicklung eines Modells zur Simulation der Geburtsmechanik und zur Erarbeitung pelvimetrischer Grenzwerte auf der Basis der “Finite Element-Analyse” kernspintomographischer Daten. Fortschr. Röntgenstr. 157, 3 (1992) 317.
Lorensen, W.E., H.E. Cline: Marching cubes, a high resolution 3D surface construction algorithm. Computer Graphics 21 (1987) 163–169.
Nahum, A.M., J. Melvin (Hrsg.): The Biomechanics of Trauma. Appleton-Century-Crofts, East Norwalk (Conn.) 1985.
Timoshenko, S.P., J.N. Goodier: Theory of elasticity. 3rd edition. (Engineering Societies Monographs) McGraw-Hill Kogakusha Ltd., Tokyo 1970.
Wischnik, A., K.J. Lehmann, E. Nalepa, K.U. Wentz, M. Georgi, F. Melchert: Die Magnetresonanztomographie als Grundlage biomechanischer Analytik. Fortschr. Röntgenstr. 157 (1992) 333–337.
Zienkiewics, O. C.: The finite element method. 3rd.edition McGraw-Hill Book Company, London 1977.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1993 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Lehmann, K.J., Wischnik, A., Nalepa, E., Georgi, M. (1993). Dynamic Biomechanical Analysis of Deformation Stress during Labour by „Finite Elements Analysis“ of MRI Data. In: Lemke, H.U., Inamura, K., Jaffe, C.C., Felix, R. (eds) Computer Assisted Radiology / Computergestützte Radiologie. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-49351-5_66
Download citation
DOI: https://doi.org/10.1007/978-3-642-49351-5_66
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-49353-9
Online ISBN: 978-3-642-49351-5
eBook Packages: Springer Book Archive