Description Usage Arguments Value Author(s)
Calculate the FBER, defined as the mean energy of image values within the head relative to outside the head. Higher values are better.
FBER = E|F|^2 / E|B|^2
Shehzad Z, Giavasis S, Li Q, Benhajali Y, Yan C, Yang Z, Milham M, Bellec P, Craddock C. The Preprocessed Connectomes Project Quality Assessment Protocol<e2><80><94>a resource for measuring the quality of MRI data. Frontiers in neuroscience. 2015.
1 | nii.qc.fber(img.nii, img.vol=1L, brain.mask, brain.vol=1L, brain.dir="gt", brain.thresh = 0, frame.mask=NULL, frame.vol=1L, frame.dir="gt", frame.thresh = 0)
|
img.nii |
Full directory listing to desired nifti image (unzipped) |
img.vol=1L |
For multi volume images; an integer indicating the volume to load (1..N) |
brain.mask |
Full directory listing to desired nifti image to use for masking to ROI (unzipped). Must be identical pixel dimensions to base image. |
brain.vol=1L |
For multi volume images; an integer indicating the volume to load (1..N) |
brain.dir="gt" |
Direction to threshold the mask image to generate the ROI. Options include ("gt") [>] Default, "ge" [>=], "lt" [<], "le" [<=], "eq" [==] |
brain.thresh=0 |
Value at which to threshold the ROI mask image. E.g., for binary masks, where the value 1 indicates the ROI, default of >0, will generate the appropriate mask |
frame.mask |
Full directory listing to desired nifti image to use for masking to scan area (unzipped). Must be identical pixel dimensions to base image. |
frame.vol=1L |
For multi volume images; an integer indicating the volume to load (1..N) |
frame.dir="gt" |
Direction to threshold the mask image to generate the extent of the scanned image. Options include ("gt") [>] Default, "ge" [>=], "lt" [<], "le" [<=], "eq" [==] |
frame.thresh=0 |
Value at which to threshold the mask image. E.g., for binary masks, where the value 1 indicates the ROI, default of >0, will generate the appropriate mask |
a numeric value indicating Foreground to Background Energy Ratio
Timothy R. Koscik <timkoscik+niiqc@gmail.com>
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