The "sawtooth" appearance in fiber tracking

[Ricardo Nicolas]

Hi. I'm a neurosurgeon and a new-comer of DSI studio. 

I ran reconstruction for two patients today, and the results showed a "sawtooth" appearance. In one patient, only the axial appearance is normal, the other two - the saggital and coronal views both rendered to be "sawtooth" appearance. In another patient, the only normal appearance is the saggital view. 

I'm very frustrated as it doesn't occur in my friend's Windows PC (mine is MacBook Pro mid-2015 with the latest version of MacOS Mojave). 

Is it due to settings or Mac incompatibilities? 

Please help!

[Fang-Cheng Yeh]

Hi Ricardo,

    I checked your screenshot. The T1W image has to be converted to a NIFTI file (dcm2nii, or  [Batch Processing][Step B2] ) or sorted using DSI Studio's file sorting function [Batch Processing][Step B1 rename DICOM files].

   If you still cannot resolve it, please feel free to upload the T1W and the FIB file.

Best,

Frank

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[Ricardo Nicolas]

Hi Frank,

    Thank you so much. I think that part of the problem has been resolved. 

    However, a new problem arises as "b-table cannot be found from the header".

    This occurs after I use step B1 and step T1. Now even T2 cannot be performed. I'm sorry but this problem is new to me as I cannot find an external b-table or even to generate one.

    Please help!

 

    Looking forward to your reply.

Best, 

Ricardo

On Wednesday, June 19, 2019 at 10:30:44 PM UTC+8, Frank Yeh wrote:

Hi Ricardo,

    I checked your screenshot. The T1W image has to be converted to a NIFTI file (dcm2nii, or  [Batch Processing][Step B2] ) or sorted using DSI Studio's file sorting function [Batch Processing][Step B1 rename DICOM files].

   If you still cannot resolve it, please feel free to upload the T1W and the FIB file.

Best,

Frank

On Wed, Jun 19, 2019 at 7:51 AM Ricardo Nicolas <fauxv...@gmail.com> wrote:

Hi. I'm a neurosurgeon and a new-comer of DSI studio. 

I ran reconstruction for two patients today, and the results showed a "sawtooth" appearance. In one patient, only the axial appearance is normal, the other two - the saggital and coronal views both rendered to be "sawtooth" appearance. In another patient, the only normal appearance is the saggital view. 

I'm very frustrated as it doesn't occur in my friend's Windows PC (mine is MacBook Pro mid-2015 with the latest version of MacOS Mojave). 

Is it due to settings or Mac incompatibilities? 

Please help!

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[Fang-Cheng Yeh]

Hi Ricardo,

    Please check out the following: http://dsi-studio.labsolver.org/Manual/Parse-DICOM#TOC-Read-4D-NIFTI-files

Best,

Frank

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[Ricardo Nicolas]

Thank you so much! The problem has been solved!

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