Linear and incremental estimation of elastic deformations in medical registration using prescribed displacements

• Autorzy: Peckar W. , Schnorr C. , Rohr K. , Stiehl H. S. , Spetzger U.
• Języki publikacji: EN

Abstrakty

EN

We propose an approach for estimation of elastic deformations in medical registration. Compared to standard registration methods based on elasticity theory, our estimation scheme does not contain parameters of the deformation model (elastic constants). Rather, the computed elastic deformation is uniquely defined through incorporation of prescribed displacements on boundary structures in the source and target image. Under the assumption of correctness of input data, our estimation scheme provides the exact correspondence of sructures to be registered due to the constrains. Furthermore, to cope with large-magnitude deformation, we propose an incemental model based on successive linearizations of the non-linear elastic equilibrium equation. To illustrate the performance of our approach, we show experimental results for 2-D and 3-D synthetic as well as real medical images and provide timing information for sequential and parallel realizations.

Słowa kluczowe

EN

non--rigid medical image registration; elastic deformations; finite element method

• Wydawca: Institute of Information Technology of the Warsaw University of Life Sciences – SGGW
• Czasopismo: Machine Graphics and Vision
• Rocznik: 1998
• Tom: Vol. 7, No. 4
• Strony: 807--829
• Opis fizyczny: Bibliogr. 32 poz.

Twórcy

autor

Peckar W.

autor

Schnorr C.

autor

Rohr K.

autor

Stiehl H. S.

autor

Spetzger U.

• Universitat Hamburg, FB Informatic, AB Kognitive Systeme, Vogt-Kolln-Str. 30, D-22527 Hamburg, Germany,