perform streamlines tracking.
-seed spec |
specify the seed region of interest.
spec |
specifies the parameters necessary to define the ROI. This should be either the path to a binary mask image, or a comma-separated list of 4 floating-point values, specifying the [x,y,z] coordinates of the centre and radius of a spherical ROI. |
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-include spec |
specify an inclusion region of interest, in the same format as the seed region. Only tracks that enter all such inclusion ROI will be produced.
spec |
specifies the parameters necessary to define the ROI. |
|
-exclude spec |
specify an exclusion region of interest, in the same format as the seed region. Only tracks that enter any such exclusion ROI will be discarded.
spec |
specifies the parameters necessary to define the ROI. |
|
-mask spec |
specify a mask region of interest, in the same format as the seed region. Tracks will be terminated when they leave any such ROI.
spec |
specifies the parameters necessary to define the ROI. |
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-step size |
set the step size of the algorithm.
size |
the step size to use in mm (default is 0.2 mm). |
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-curvature radius |
set the minimum radius of curvature (default is 2 mm for DT_STREAM, 0 for SD_STREAM, 1 mm for SD_PROB and DT_PROB).
radius |
the radius of curvature to use in mm. |
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-grad scheme |
specify the diffusion encoding scheme (may be required for DT_STREAM, ignored otherwise).
scheme |
the DW gradient file. |
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-number tracks |
set the number of tracks to calculate (default is 100 for *_STREAM methods, 1000 for *_PROB methods).
tracks |
the number of tracks. |
|
-maxnum tracks |
set the maximum total number of tracks to attempt (default is 100 x number).
tracks |
the maximum number of tracks. |
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-length value |
set the maximum length of any track.
value |
the maximum length to use in mm (default is 200 mm). |
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-minlength value |
set the minimum length of any track.
value |
the minimum length to use in mm (default is 10 mm). |
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-cutoff value |
set the FA or FOD amplitude cutoff for terminating tracks (default is 0.1).
|
-initcutoff value |
set the minimum FA or FOD amplitude for initiating tracks (default is twice the normal cutoff).
value |
the initial cutoff to use. |
|
-trials number |
set the maximum number of sampling trials at each point (only used for probabilistic tracking).
number |
the number of trials. |
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-unidirectional |
track from the seed point in one direction only (default is to track in both directions). |
-initdirection dir |
specify an initial direction for the tracking.
dir |
the vector specifying the initial direction. |
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-noprecomputed |
do NOT pre-compute legendre polynomial values. Warning: this will slow down the algorithm by a factor of approximately 4. |
-info |
display information messages. |
-quiet |
do not display information messages or progress status. |
-debug |
display debugging messages. |
-help |
display this information page and exit. |
-version |
display version information and exit. |