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k-t PCA: temporally constrained k-t BLAST reconstruction using principal component analysis

Despite the great attention it has received, k-t BLAST the leading spatiotemporal acceleration technique in cardiovascular MRI developed by us [Kozerke, MRM, 2004], still has drawbacks in particular when large acceleration factors are applied. Many novel applications in dynamic MRI do, however, require significant acceleration factors. The k-t PCA method permits more efficient data compression and hence better image reconstruction quality in particular for non-periodic signals as for example present in dynamic contrast-enhanced MRI. The method has also been used by us as the basis of accelerating dynamic 3D perfusion imaging [Vitanis, MRM, 2011 & Jogiya, JACC, 2012].