Title :
Improved partial k-space reconstruction technique for dynamic myocardial perfusion MRI
Author :
Vijayakumar, Sathya ; Huang, Feng ; DiBella, Edward V R
Author_Institution :
Res. & Pre-Development, Invivo Diagnostic Imaging, Gainesville, FL
Abstract :
The advent of partially parallel k-space data acquisition and reconstruction techniques has resulted in a drastic reduction in acquisition time. In this work, we have shown that the use of a new hybrid technique for reconstruction of partial k-space data can reduce acquisition time without loss of spatiotemporal resolution. The technique is termed hybrid k-t GRAPPA since it is a combination of k-t GRAPPA and an image-k-space keyhole technique. The hybrid method with an acceleration factor 4 generated better results than standard GRAPPA with acceleration factor 2 in preliminary results
Keywords :
biomedical MRI; data acquisition; haemorheology; image reconstruction; image resolution; medical image processing; spatiotemporal phenomena; dynamic myocardial perfusion MRI; hybrid k-t GRAPPA; image-k-space keyhole technique; partial k-space reconstruction; partially parallel k-space data acquisition; spatiotemporal resolution; Acceleration; Arteries; Data acquisition; Hybrid power systems; Image generation; Image reconstruction; Image resolution; Magnetic resonance imaging; Myocardium; Spatiotemporal phenomena; Partially parallel imaging techniques; and tracer kinetic model; hybrid k-t GRAPPA; k-t GRAPPA; myocardial perfusion MRI;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1616696
