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.