Hi Esa,
MEDx has support for the Interfile format and it should most probably be
able to open your data.
If you are interested you can get a free one month demo of MEDx. The
download and install instructions can be found at
http://medx.sensor.com/products/medx/demo.html .
Regards....Raj
*********************************************
Raj Jagannathan
Medical Products Division
Sensor Systems, Inc.
http://medx.sensor.com
*********************************************
----- Original Message -----
From: "Esa Wallius" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, June 26, 2001 2:13 PM
Subject: Interfile to Analyze conversion
> Dear SPM users,
>
> I'm trying to convert PET images in interfile format (created with PARAPET
> software) to Analyze format for SPM.
>
> I've tried XMedCon and MriCro with no success. XMedCon produced Analyze
> images, but the voxel intensity was unknown and the voxel size was wrong
> (1x1x1). When using MriCro it was mentioned that the image is 32-bit
> unsigned integer data and the conversion didn't even start.
>
> Does anyone know a free converter software (other than XMedCon or
> MriCro) for this purpose?
>
> Below is a description of the file format of images.
>
> Thanks in advance,
>
> Esa Wallius
> Tampere University of Technology, Finland
>
> -----------------------------------------------------------
> 5.1 File formats
>
> The PARAPET utility and reconstruction programmes frequently need to
> read and write files of image and projection data. Files formats are
> encountered in which data and header information are maintained in
> separate files (e.g. interfile). In other formats, data files carry
> header information (e.g. the native GE Advance sinogram format). The
> most comprehensively supported file format in the library is
> interfile. More details about this type can be found on
> http://www.cu.mrc.ac.uk/~kris/. It is currently the only format
> supported for writing. Projection data files are written in pairs
> projdata_filename.hs projdata_filename.s where projdata_filename.hs is
> the header text file and projdata_filename.s is the data file.
>
> Similarly, image files are written as a pair of files
> image_filename.hv image_filename.v where image_filename.hv is the
> header text file and image_filename.v is the data file. In addition,
> we currently write a .ahv file which uses (old) Interfile 3.3
> conventions, with a tweak for the AnalyzeTM programme. The native GE
> Advance sinogram format is supported for reading, however data files
> must have maximum ring difference 11 and contain 281 bins * 256
> segments * 336 views.
>
> A utility is available (see Section 5.4.2) for converting ECAT6 to
> interfile. (shortly, we shall provide support for ECAT7, as well).
>
> When a file must be specified for reading in a utility or
> reconstruction programme, the name of the header file should be given
> (if available). If the name of a data file is given the software's
> file reading routines will look for a prepended header. Failing to
> find one, it will prompt the user for the required information.
>
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