๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

The Voxel Sensitivity Function in Fourier Transform Imaging: Applications to Magnetic Resonance Angiography

โœ Scribed by Dennis L. Parker; Yiping P. Du; Wayne L. Davis

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
888 KB
Volume
33
Category
Article
ISSN
0740-3194

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โœฆ Synopsis

Abstract

In this paper the problem of small structure visualization in magnetic resonance imaging (MRI) is considered. The relationship between the structure and the image intensities is defined in terms of the voxel sensitivity function (VSF). Using the VSF, the spatial dependence of the voxel signal for small spheres and cylinders is computed. Although the spatial fluctuation is smaller in the MRI VSF than that which would be obtained from a uniformly sensitive cubical voxel, the deviation still results in significant signal loss near the edges and corners of the voxels. Finally, the VSF formalism is used to demonstrate the improvement in signal uniformity that can be obtained by using zeroโ€filled (bandโ€limited or sinc) interpolation.

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