Dear LandMarker Developers and Users,<br><br>I've been trying to use the LDDMM option in LandMarker to perform intra-subject registration of T2-weighted images with b=0 images following the procedure detailed in Dr. Mori's paper,entitled, 'Correction of B0 susceptibility induced distortion in diffusion-weighted images using large-deformation diffeomorphic metric mapping', Magn. Reson. Imaging 26:1294-302 (2008). Briefly, the following were performed:<br>
<br>Step 1: In DtiStudio (version 3.0 Beta), to correct eddy current distorion, all DWI were registered to b=0 images using AIR and selecting 'Affine' for the 'Linear Transformation Approach'.<br><br>Step 2: T2-weighted and mean b=0 images were skull stripped using MRICro.<br>
<br>Step 3: Skull-stripped T2 (target) and b=0 images (subject) were loaded to LandMarker. Both the images were resampled so that they have the same spatial resolution using 'Resample Image', prior to which, data format of both were changed to using 'Change Image Data Format' option (both the files have the same spatial resolutions, i.e., 128x128x2 mm3 resolution).<br>
<br>Step 4: Intensity of both the images (T2 and b=0) were adjusted using 'Intensity Correction' option in the Volume LDDMM.<br><br>Step 5: 'Single channel' option under Volume LDDMM was selected to set parameters for this registration process and provided my email address and submitted the data for remote processing.<br>
<br>After a few minutes, I have got an email from <a href="mailto:lddmmproc@cis.jhu.edu">lddmmproc@cis.jhu.edu</a> with an Md5 String and an ftp link for downloading the processed data. <br><br>Step 6: To view the registered data, I copied the Md5 string from the email message and pasted it at 'Retrieve Results From Remote Volume LDDMM' in LandMarker. A little while later, I've got a message that said 'The Kimap file cannot be found in the resultant data'. I extracted the files from the Results.zip file and found a non-zero size Kimap file, named as Kimap000.vtk. <br>
<br>If anybody got the same message in LandMarker, 'The Kimap file cannot be found in the resultant data', could you please let me know how I can see the results? <br><br>Thank you very much in advance,<br><br>govind<br>
University of Miami, Miami, Florida <br><br>