.\"  -*- nroff -*-
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.\" ctrec.1
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.\" Author: Kevin Rosenberg <kevin@rosenberg.net>
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.\" $Id: ctrec.1,v 1.3 2000/06/09 01:35:33 kevin Exp $
.\" $Log: ctrec.1,v $
.\" Revision 1.3  2000/06/09 01:35:33  kevin
.\" Convert MPI structure to C++ class
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.\" Revision 1.2  2000/05/03 08:43:46  kevin
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.Dd April 19, 2000
.Dt CTREC 1
.Os
.Sh NAME
.Nm ctrec
.Nd Image Reconstruction (reconstruct computed tomography data)
.Sh SYNOPSIS
.Nm ctrec raysum-file image-file nx-image ny-image [OPTIONS]
.Sh DESCRIPTION 
.Nm
reconstucts image data from raysum projections collected by CT scanner. It uses
.Xr phm2rs 1
for projection data generation. 
.Pp
.Nm
is configured to use a variety of reconstruction filters.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl Fl interp Ar interp-method
Select interpolation mode (default is linear)
.It Fl Fl filter Ar filter-name
Select filter for reconstruction
.It Fl Fl filter-param Ar x
Set alpha level for Hamming filter
.It Fl Fl backproj Ar bj-method
Select backprojection method (default is diff2)
.It Fl Fl desc Ar description
Save description in image file
.It Fl Fl trace Ar level
Set trace level (default is none)
.It Fl Fl verbose
Turn on verbose mode
.It Fl Fl debug
Turn on debug mode
.It Fl Fl version
Print version
.It Fl Fl help
Print terse help summary
.Sh AUTHORS
Kevin Rosenberg, M.D. <kevin@rosenberg.net>
.Sh HISTORY
.Nm
was first written in 1983 using MS-DOS and an EGA display adapter. In 1999 it was ported to GNU/Linux.
.Sh SEE ALSO
.Xr phm2if 1 ,
.Xr phm2rs 1 ,
.Xr rs2if 1 ,
.Xr if2img 1 ,
.Xr ifinfo 1