We have developed a technique called fast Fourier projection which rapidly produces projections through images and is particularly useful for generating MR angiograms. Based on the projection-slice theorem of Fourier transform theory, this method extracts planes from three-dimensional spatial freque
Projective Fourier angiography
โ Scribed by David G. Norris; Richard A. Jones; James M. S. Hutchison
- Book ID
- 102953340
- Publisher
- John Wiley and Sons
- Year
- 1988
- Tongue
- English
- Weight
- 653 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0740-3194
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โฆ Synopsis
The Fourier imaging of flow is discussed, and the limitations of imaging time, spatial and velocity resolution, imposed on this technique when applied in conjunction with ECG synchronization are examined. It is argued that this method is best used in projective format, and in vivo examples are presented. The relative velocity spectrum obtained is largely system independent, and quantification of velocity is implicit in the Fourier technique.
๐ SIMILAR VOLUMES
Identifying PSL(2, ") as a projective group for patterns in the conformal camera model, the projective harmonic analysis on its double covering group SL(2, ") is presented in the noncompact and compact pictures \* the pictures used to study di!erent aspects of irreducible unitary representations of
The performance of current, flow-based sequences for imaging vasculature using MR is severely restricted in regions with inherently slow flow. We address this problem with a flow-independent imaging method. Specifically, we generate projection images of blood in the limbs while suppressing signal fr