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Updated: Aug 5, 2026

Meso-Scale Particle Image Velocimetry Studies of Neurovascular Flows In Vitro
Published on: December 3, 2018
Characterization of interpolation effects in cine anatomic and phase-velocity images
1Division of Cardiology, Children's Hospital of Los Angeles, University of Southern California School of Medicine, Los Angeles, California 90027-0034, USA. jwood@chla.usc.edu
Purpose:
To compare actual and predicted frequency response of reconstruction algorithms applied to anatomic and phase-contrast velocity cine images.
Materials And Methods:
Anatomic and phase-contrast velocity segmented cine gradient echo images were collected from a stationary, doped-agarose phantom, using non-phase-contrast cine and phase-contrast cine with one to three directional encodings, one to 16 views per segment, and nearest-neighbor or linear interpolation. Temporal power spectra from object pixels were fit to linear transfer function models; nearest-neighbor interpolation by a sinc function and linear interpolation by a sinc(2) function.
Results:
Simple linear transfer function models predicted >98% of the observed power spectral variation. Finite word effects produced small systematic differences at high temporal frequency.
Conclusion:
Temporal power spectra of cine images collected from stationary objects completely characterizes low pass filtration effects of interpolation.
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