Section 8 - Other Features
This section discusses, briefly, a few newly added or under development features in scanSTAT
Editing and Managing Analyze Headers
scanSTAT was designed to take advantage of the 'Analyze' image format developed at the Mayo clinic. This format uses binary (non-text) headers that may be difficult to edit and view. We have thus included utilities to work with them.
- To use these features, go to the Utilities -> Create Analyze Header selection. You will be presented with a dialog similar to that below:
- From here you can fill in the various fields contained in the Analyze header description. You may also designate the file type and creator, which are Macintosh-specific options.
- Edit Analyze Header is very similar, but selects the header for the currently open image.
Noise Sysnthesis
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In many cases, the effects of analysis processes such as smoothing and global normalization are somewhat diffiulct to anticipate. For this reason, we have decided to include a Noise Simulation feature. At this release it is not fully enabled, though the Tools folder, in the Sample Data, contains a command line version (undocumented, at this time, but you can safely try it). With the niose simulation, you will be able to modulate the pixel intensities at well defined locations, according to your choice of time course (specified with a Paradigm File). You can also add rayleigh-distributed noise to the image. Using the synthesized images, you can assess the effects of various processing options on the detection of fMRI signals where "ground truth" is well-specified.