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A Rotational Cylindrical fMRI Phantom for Image Quality Control

Fig 7

CNR and CVCNR dependence on slice position for EPI scans.

A) CNRmean and B) CVcnr plotted across phantom slices for EPI scans at various echo times (TR/TE/FA = 4000ms/21ms-115ms/90°, matrix = 64x64). There is a greater variation of CNR in EPI images compared to the GRE (Fig 6) across the slices and within the slices.

Fig 7

doi: https://doi.org/10.1371/journal.pone.0143172.g007