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Abstract #3347

Correlation Imaging for Multi-Scan Acceleration in Clinical MRI

Yu Li1, Feng Huang2, Wei Lin2, Randy Duensing2, Charles L. Dumoulin1

1Imaging Research Center, Radiology Department, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, United States; 2Invivo Diagnostic Imaging, Philips HealthCare, Gainesville, FL, United States

Parallel imaging provides a generic solution to accelerating single-scan MRI. However, a clinical MRI protocol needs a series of MRI scans for acquiring a number of images with different contrast and geometry. In the presented work, we propose a new high-speed MRI framework, correlation imaging, that can accelerate multi-scan MRI by combining multi-channel acceleration mechanisms underlying parallel imaging and the shared information of a multi-scan acquisition. In a three-scan anatomical MRI protocol, we demonstrated that correlation imaging optimized for multi-scan MRI outperforms conventional parallel imaging techniques optimized for single-scan MRI.

Keywords

accelerate accelerated accelerating acceleration acquiring acquisition aggregate aliasing allowed allows among amount analogous anatomical anterior arbitrary array artifacts assembling auto axial beginning beyond brain brings calibration called capability channel channels children clinical coefficients coil combining comparable completely conducted contrast correlation critical cross dependent depends depicted describe determined developed diagnostic encoding ensemble equations equivalent error errors every expectation finding folded form free full function functions generate generic geometry gives head hospital illustrates incoherent initial least limit linear materials matrix mechanisms medical needs noise noted offers optimization optimize optimized optimum parallel patient percentage plays position posterior potential previous previously proceeds profiles propose proposed protocol providing radiology randy reconstructed reconstruction reduction relationship relies represent representation represents resolution resolve resolved resolving role root scanners screening sense sensitivity series shared sharing since slice slices solution space speeds spread square strategies strategy subsequent summation suppresses synergy theory third thought together trajectory typically underlying unfolding unknowns vector weightings