Respiratory Arifact Reduction in MRI using Dynamic Deformation Modelling
2002 (English)Conference paper (Other academic)
This paper presents a novel magnetic resonance imaging (MRI) reconstruction method that will reconstruct an object correctly despite the presence of respiratory-type motions. The basis for the method is the observation that affine deformations of an object will correspond to a different but unique affine coordinate transform of the Fourier representation (k-space) of the object. The resulting sample points will be irregularly distributed prohibiting the use of standard IFFT to reconstruct the object. The object can however be reconstructed through the use of a weighted regularized pseudo inverse. Short computing times are obtained using a novel fast sequential pseudo inverse algorithm.
Place, publisher, year, edition, pages
National CategoryBiomedical Laboratory Science/Technology
IdentifiersURN: urn:nbn:se:liu:diva-61224OAI: oai:DiVA.org:liu-61224DiVA: diva2:360955
SSAB 2002 Symposium on Image Analysis, Lund, Sweden 7-8 mars 2002