Magnification Imaging by Radiofrequency-Induced Nonlinear Phase Encoding
Jun Shen 1
NIMH, Bethesda, MD, United States
A new imaging technique is described which essentially
stretches a predetermined region of interest in the
object to be imaged by interacting linear magnetic field
gradients with a series of radiofrequency magnifying
pulses. These magnifying pulses progressively bend the
phase of electromagnetic signals from the imaging focus
during phase encoding. As a result, the differential
phase evolution at the imaging focus is faster than in
conventional MRI, leading to focal resolution
enhancement. This technique is demonstrated by phantom
and in vivo imaging.
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