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Brain arteries movement detection with gated gradient echo sequence: standardization, registration and subtraction of serial magnetic resonance images

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3 Author(s)
Ionescu, R. ; Fac. of Electron. & Telecommun., Politehnic Inst. of Bucharest, Romania ; Alarcon, C. ; Langevin, F.

In order to make evident pulsing brain artery movements associated with heart activity, intramodality MR registration and subtraction has to be used to detect small differences between serial MR brain images. A new voxel-based rigid-body registration algorithm, including: (1) a standardization of grey levels procedure by means of similarity measure optimisation, (2) a new full 2-D convolution cubic interpolation zooming procedure, (3) a low computational cost multi-scale iterative procedure, that uses the zoomed versions of images to be registered, is proposed. It allows up to 1/8 pixel accuracy.

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Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE  (Volume:3 )

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