KellyKapowski(1)
part of ANTS registration suite
DESCRIPTION
COMMAND:
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KellyKapowski
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DiReCT is a registration based estimate of cortical thickness. It was published
in S. R. Das, B. B. Avants, M. Grossman, and J. C. Gee, Registration based
cortical thickness measurement, Neuroimage 2009, 45:867--879.
OPTIONS:
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-d, --image-dimensionality 2/3
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- This option forces the image to be treated as a specified-dimensional image. If
not specified, DiReCT tries to infer the dimensionality from the input image.
- -s, --segmentation-image imageFilename
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[imageFilename,<grayMatterLabel=2>,<whiteMatterLabel=3>]
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A segmentation image must be supplied labeling the grayand white matters.
Ddefault values = 2 and 3, respectively.
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-g, --gray-matter-probability-image imageFilename
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- In addition to the segmentation image, a gray matter probability image can be
used. If no such image is supplied, one is created using the segmentation image
and a variance of 1.0 mm.
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-w, --white-matter-probability-image imageFilename
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- In addition to the segmentation image, a white matter probability image can be
used. If no such image is supplied, one is created using the segmentation image
and a variance of 1.0 mm.
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-c, --convergence [<numberOfIterations=50>,<convergenceThreshold=0.001>,<convergenceWindowSize=10>]
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- Convergence is determined by fitting a line to the normalized energy profile of
the last N iterations (where N is specified by the window size) and determining
the slope which is then compared with the convergence threshold.
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-t, --thickness-prior-estimate thicknessPriorEstimate
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- Provides a prior constraint on the final thickness measurement. Default = 10 mm.
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-a, --thickness-prior-image thicknessPriorFileName
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- An image containing spatially varying prior thickness values.
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-r, --gradient-step stepSize
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- Gradient step size for the optimization. Default = 0.025.
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-l, --smoothing-variance variance
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- Defines the Gaussian smoothing of the hit and total images. Default = 1.0.
- -m, --smoothing-velocity-field-parameter variance
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isotropicMeshSpacing
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Defines the Gaussian smoothing of the velocity field (default = 1.5).If the
b-spline smoothing option is chosen, then this defines the isotropic mesh
spacing for the smoothing spline (default = 15).
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-b, --use-bspline-smoothing 1/(0)
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- Sets the option for B-spline smoothing of the velocity field.Default = false.
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-n, --number-of-integration-points numberOfPoints
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- Number of compositions of the diffeomorphism per iteration. Default = 10.
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-p, --maximum-number-of-invert-displacement-field-iterations numberOfIterations
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- Maximum number of iterations for estimating the invert displacement field.
Default = 20.
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-o, --output imageFileName
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[imageFileName,warpedWhiteMatterImageFileName]
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- The output consists of a thickness map defined in the segmented gray matter.
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-v, --verbose (0)/1
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- Verbose output.
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-h
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- Print the help menu (short version).
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--help
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- Print the help menu.
<VALUES>: 1