multimodal:MainPage

From NITRC Wiki

Release Notes

2011.02.08 (BL)
The code "100 100 100" in the grad file uses the DTIStudio notation to indicate that one should ignore the last volume in the 4-D file. The code "0 0 0" indicates the b=0 s/mm2 volume. The remainder are unit length to floating point precision. The last volume is a scanner generated "trace" image and should be ignored. The b-value is in s/mm2. There are numerous "right" ways to coregister data, perform distortion correction, and compute a tensor. You are welcome to use our CATNAP software in JIST, the CAMINO package, or any of the other fine wares out there. Both the .b and .grad files can be directly imported into either CATNAP or DTIStudio.

2010.09.15 (BL)
The .grad tables provided are the gradient tables SPECIFIED on the scanner - these are the "Philips High No Overplus" table. These are played out in the scanner coordinate system, which is different than the measurement (voxel) coordinate system. The REALIZED gradient tables are stored in the PAR files (JIST plugin "Extract b and grad from PAR files"), can be calculated with the traditional CATNAP tool (JIST plugin "ParV4 DTI Info"), or can be found with the online Java tool (http://godzilla.kennedykrieger.org/~jfarrell/OTHERphilips/GUI.html).