Non-rigid registration using hardware-accelerated free-form deformation

• Autorzy: Soza G. , Bauer M. , Hastreiter P. , Nimsky C. , Greiner G.
• Języki publikacji: EN

Abstrakty

EN

In this paper we introduce a new method for non-rigid voxel-based registration of medical images. There exist many applications where an alignment between two image datasets has to be established. Often a registration of a time-shifted medical image sequence with appearing deformation of soft tissue (e.g. pre- and intraoperative data) has to be conducted. Soft tissue deformations are usually highly non-linear. In our approach, for the handling of this phenomenon and for obtaining an optimal non-linear alignment of respective datasets we transform one of them using 3D Bézier functions, which provides some inherent smoothness as well as elasticity. In order to find the optimal transformation, many evaluations of this Bézier function are necessary. In order to make the method more efficient, graphics hardware is extensively used. We applied our non-rigid algorithm successfully to MR brain images in several clinical cases and showed its value.

Słowa kluczowe

EN

brain shift; registration; free-form deformation; graphics hardware

PL

przesunięcie mózgu; rejestracja; sprzęt graficzny

• Wydawca: University of Silesia, Institute of Informatics, Computer Systems Department
• Czasopismo: Journal of Medical Informatics & Technologies
• Rocznik: 2002
• Tom: Vol. 3
• Strony: MI181--188
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Soza G.

• Computer Graphics Group, University of Erlangen-Nuremberg, Am Weichselgarten 9, 91058 Erlangen, Germany

autor

Bauer M.

• Computer Graphics Group, University of Erlangen-Nuremberg, Am Weichselgarten 9, 91058 Erlangen, Germany

autor

Hastreiter P.

• Computer Graphics Group, University of Erlangen-Nuremberg, Am Weichselgarten 9, 91058 Erlangen, Germany
• Neurocenter, Department of Neurosurgery, University of Erlangen-Nuremberg, Schwabchanlage 6, 91058 Erlangen, Germany

autor

Nimsky C.

• Neurocenter, Department of Neurosurgery, University of Erlangen-Nuremberg, Schwabchanlage 6, 91058 Erlangen, Germany

autor

Greiner G.

• Computer Graphics Group, University of Erlangen-Nuremberg, Am Weichselgarten 9, 91058 Erlangen, Germany

Bibliografia

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