Dependence of the frequency distribution around a vessel on the voxel orientation.

In this work the frequency distribution around a vessel inside a cubic voxel is investigated. Therefore, the frequency distribution is calculated in dependence on the orientation of the voxel according to the external magnetic field. The frequency distribution exhibits an interesting peak structure that cannot be explained by the established Krogh's vessel model. The results were validated with phantom measurements and in vivo measurements that agree very well with the developed theory.