eflexseg 1.3.0 © 2002-2009 by Turku PET Centre
Flexible image segmentation (clustering) for dynamic PET image (1).
This program is for method testing purposes only!
Command-line arguments:
1) Dynamic image file
2) Threshold-% to exclude background and cerebrospinal fluid
3) Max CV% allowed for pixels in the same cluster
4) Threshold-% for correlation coefficient between cluster TACs
5) Static cluster image
6) Cluster TAC file (optional)
Options:
-cf=<filename for correction factor image>
ECAT format file will contain correction factors for individual
pixels, calculated as (AUC of cluster avg TAC)/(AUC of pixel TAC)
-sm=<filename for smoothed dynamic image>
TACs in the original dynamic image are replaced by the cluster TACs
which have been divided by the correction factors
-h or --help
Print this message and exit
-v, --version or --build
Print software build information and exit
--silent
Program works silently, printing only error and warning messages
--verbose
Program prints lots of information about what it is doing.
Static cluster image will contain the cluster numbers as integers, where
0 represents pixels below TH%, and 1, 2, 3, ... represent clusters in
DECREASING order of TAC integrals.
Cluster TAC file is a DFT formatted ASCII file (2), containing the TACs of
individual clusters in the order 0, 1, 2, ...
Example:
eflexseg b123dy1.v 30 5 50 b123cluster.v b123cluster.dat
References:
1. Bentourkia M. A flexible image segmentation prior to parametric
estimation. Comput. Med. Imaging Graph. 2001;25:501-506.
2. DFT format
http://www.turkupetcentre.net/analysis/doc/format_dft.html
See also:
ecatthrs,
imgdysmo,
ecat2tif,
ecat2ana,
epxl2dft
Keywords: image, modelling, binding potential, basis function method
This program comes with ABSOLUTELY NO WARRANTY. This is free software, and
you are welcome to redistribute it under GNU General Public License.