Title :
Brain arteries movement detection with gated gradient echo sequence: standardization, registration and subtraction of serial magnetic resonance images
Author :
Ionescu, Raãzvan ; Alarcon, Cristian ; Langevin, Francois
Author_Institution :
Fac. of Electron. & Telecommun., Politehnic Inst. of Bucharest, Romania
Abstract :
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.
Keywords :
biomedical MRI; blood vessels; brain; cardiology; image registration; image sequences; interpolation; iterative methods; medical image processing; standardisation; 2-D convolution cubic interpolation zooming procedure; MRI standardization; brain artery movement detection; gated gradient echo sequence; grey levels procedure; heart activity; intramodality MR registration; intramodality MR subtraction; low computational cost multi-scale iterative procedure; optimisation; pixel accuracy; pulsing brain arteries; serial MR brain images; serial magnetic resonance images; small differences; voxel-based rigid-body registration algorithm; zoomed versions; Arteries; Brain; Computational efficiency; Heart; Image registration; Image segmentation; Interpolation; Magnetic resonance; Performance evaluation; Standardization;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1017244
