Abstract #4357
Improved Spiral first-pass perfusion imaging with Motion-Corrected Compressed Sensing
Yang Yang 1 , Craig H Meyer 1,2 , Christopher M Kramer 2,3 , and Michael Salerno 2,3
1
Biomedical Engineering, University of
Virginia, Charlottesville, VA, United States,
2
Radiology,
University of Virginia, Charlottesville, VA, United
States,
3
Medcine, University of Virginia,
Charlottesville, VA, United States
Compressed sensing (CS) has shown promise for highly
accelerated first-pass perfusion imaging. However CS
techniques suffer from temporal blurring in the presence
of respiratory motion which is inevitable in clinical
breath-held perfusion scans. Spiral pulse sequences have
multiple advantages for myocardial perfusion imaging and
their relatively incoherent aliasing pattern is
advantageous for CS reconstruction. We have developed a
parallel imaging and CS reconstruction technique for
spiral first-pass perfusion imaging which incorporates a
registration operator directly into the reconstruction
model and thus outputs a series of motion-free perfusion
images. We demonstrate high image quality and robustness
to respiratory motion.
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