Brain Arteries Movement Detection With Gated Gradient Echo Sequence: Standardization, Registration and Subtraction of Serial Magnetic Resonance Images
Abstract
In order to make evident pulsing brain arteries 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 optimization, (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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 25, 2001
- Accession Number
- ADA412551
Entities
People
- Cristian Alarcon
- Francois Langevin
- Razvan Ionescu