Patent ID: 7834627
Filing Date: 2010-11-16
Classification: G01R

Abstract:
1. An NMR measurement system which obtains an optimum range of a VOI (Volume Of Interest) size, comprising: a magnetic field application means for applying a static magnetic field and a radio frequency field to a subject; a receiving means for receiving a nuclear magnetic resonance signal from the subject; a calculating means for calculating a diffusion tensor from the nuclear magnetic resonance signals; a fiber bundle extracting means for extracting fiber bundles as a group of coordinate points that represents each of the fiber bundles included in a target range which receives the nuclear magnetic resonance signal from the subject, based on the diffusion tensor calculated by the calculating means; a VOI selecting means for setting at least one VOI within the target range which receives the nuclear magnetic resonance signal; a fiber bundle number discriminating means for discriminating the fiber bundles which have at least one coordinate point of the group of coordinate points included in the VOI, from the fiber bundles extracted by the fiber bundle extracting means, and configured for counting the number of the fiber bundles; and where the VOI selecting means arranges various sizes of VOIs, allows the fiber bundle number discriminating means to count the number of the fiber bundles included in each of the various sizes of VOIs, and performs a predetermined computation as to the number of fiber bundles of the various sizes of VOIs, whereby an optimum range of the VOI size is obtained.