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                                                                NumaLink-3.0™ Users Guide and Service Manual 
 
 
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3. Product Overview 
 
In general, NumaLink-3.0 discovers nuclear medicine image files in one OEM format that are placed in a 
configured input directory, and translates them to image files in another OEM format in a configured 
output directory. While performing this translation, it makes use of various directories in a work directory 
tree. This flow is shown in Figure 4. 
 
 
Figure 4 – NumaLink-3.0 OEM Data Flow 
NumaLink
(nmtrans.exe)
NL_UserMan_001
Output
Directory
Input Directory
Work Directory
Tree
 
 
 
Input files are removed from the input directory as they are processed. Input files are not deleted 
immediately; instead, they are moved to one of the following directories in the work directory tree: 
 
Directory 
Use 
<work-directory>\cache
 
All files that have been translated successfully 
<work-directory>\trash
 
All files that could not be translated successfully 
<work-directory>\staging
 
Any files that are considered part of an incomplete translation set (for 
example, if GSPECT studies are in separate time bin files and one of 
the bins is missing; files in the staging directory are combined with files 
that subsequently appear in the input directory, in the hope that at 
incomplete set will eventually become complete and translatable) 
 
Other directories in the work directory tree are: 
 
Directory 
Use 
<work-directory>\intm_1 
Temporary storage for intermediate format dumps before customization 
<work-directory>\intm_2 
Temporary storage for intermediate format dumps after customization 
<work-directory>\nifimg 
Temporary storage for pixel data