Rapid acquisition magnetic resonance imaging using radial...

Details Rapid acquisition magnetic resonance imaging using radial... Rapid acquisition magnetic resonance imaging using radial...

G - Physics

01

R

G01R 33/54 (2006.01) A61B 5/055 (2006.01) G01R 33/561 (2006.01) G01R 33/565 (2006.01) G01R 33/28 (2006.01)

Patent

CA 2313006

High resolution and high speed MR imaging is provided for imaged objects in which the brightness of the imaged objects dominates the surrounding tissues by using sparse angular sampling and projection acquisition techniques. Individual objects throughout a large field of view are imaged at a rate and resolution normally associated with small field of view techniques. For applications such as angiography, artifacts associated with sparse angular sampling are acceptable. Volume images are acquired by combining sparsely sampled ejection in two dimensions with weighted Fourier acquisition in the third dimension.

L'invention concerne un procédé d'imagerie par résonance magnétique haute résolution et à grande vitesse permettant de former des images d'objets dans lesquelles la luminosité des images d'objets domine les tissus environnants, grâce à des techniques d'échantillonnage angulaire clairsemé et d'acquisition de projection. On forme des images d'objets individuels dans un grand champ de vision, à une vitesse et avec une résolution normalement associées à des techniques en champ de vision réduit. Dans des applications telles que l'angiographie, des artefacts associés à un échantillonnage angulaire clairsemé sont acceptables. On peut obtenir des images en volume en combinant une projection à échantillonnage clairsemé en deux dimensions avec une acquisition de Fourier pondérée dans la troisième dimension.

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