Question: bval/bvec does not match the DWI

Emma Tinney

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Jun 24, 2021, 2:34:19 PM6/24/21

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I am new to DSI studio and I am trying to upload my nifti source image (diffusion topup image) to create my src file. I have a bvec and bval file along with my source image but I receive this error message. "bval/bvec does not match the DWI: 138 DWI in the nifti file, but 0 in bval/bvec" Any suggestions?

Frank Yeh

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Jun 24, 2021, 4:11:17 PM6/24/21

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It seems that the bval or bvec file has a problem.
Have you checked those files to make sure they have values in it?
Frank

On Thu, Jun 24, 2021 at 2:34 PM Emma Tinney <emm...@udel.edu> wrote:
>
> I am new to DSI studio and I am trying to upload my nifti source image (diffusion topup image) to create my src file. I have a bvec and bval file along with my source image but I receive this error message. "bval/bvec does not match the DWI: 138 DWI in the nifti file, but 0 in bval/bvec" Any suggestions?
>

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Emma Tinney

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Jun 24, 2021, 4:12:10 PM6/24/21

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Yes they do have values in them.

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--

Emma Tinney
University of Delaware 2021
Neuroscience Major
Spanish Minor
UD Swim & Dive

Frank Yeh

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Jun 24, 2021, 4:58:03 PM6/24/21

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You may upload a sample of data using the link, and I can help check it out.
Frank

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Emma Tinney

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Jun 25, 2021, 9:13:29 AM6/25/21

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I just uploaded my Diff_topup, bvec and bval files to the dropbox. Let me know if you need more files. Thank you

Frank Yeh

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Jun 25, 2021, 9:28:44 AM6/25/21

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Thanks! I will check and get back to you asap.
Frank

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Frank Yeh

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Jun 25, 2021, 11:08:10 AM6/25/21

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I fixed the bug. Are you using a Windows or a Mac version?

You may also rename DWI_topup.nii to DWI.nii so that DSI Studio find
it before you get the updated version.
The problem is due to the glitch in finding the bval and bvec. DSI
Studio did not find where the they were and reported a confusing
message.
The new version fixes this issue by showing the correct error and also
allowing you to specify where they are after loading the nii file.

Best regards,
Frank

Emma Tinney

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Jun 25, 2021, 11:35:45 AM6/25/21

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I am using a Mac version (I have a MacBook macOS Big Sur). Thank you so much!

Where can I find the latest version?

Best,

Emma

--

Emma Tinney
Ph.D. Student

Northeastern University

Department of Psychology

Center for Cognitive and Brain Health

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Frank Yeh

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Jun 25, 2021, 1:16:53 PM6/25/21

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I am updating it and will let you know very soon.
Best regards,
Frank

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Frank Yeh

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Jun 26, 2021, 11:29:55 AM6/26/21

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DSI Studio is updated (dated today).
Please get it from the website download link.

Thanks again for reporting this issue.

Best regards,
Frank

Message has been deleted

Frank Yeh

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Nov 13, 2023, 10:07:21 PM11/13/23

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You may try dcm2nii and see if it works.

Frank

On Mon, Nov 13, 2023 at 10:05 PM Edgar G Ordóñez-Rubiano, MD. Neurocirugía FUCS <edgarordo...@gmail.com> wrote:

Frank I have this problem "Cannot find bval and bvec from the header. You can load them using the [File] menu" with a GE scanner acquisition. I have tried many ways but have no success. I have no eval or bevec data, or may be I don't know where to find it. I'd appreciate it if you can help me. I work in a Mac version. Thanks in advance.

Edgar Ordonez
Neurosurgeon

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Edgar Gerardo Ordóñez-Rubiano

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Nov 14, 2023, 7:16:38 PM11/14/23

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Thank you Frank! It Didn’t work 😪

Edgar G Ordoñez-Rubiano, MD

Neurocirujano

Hospital de San José

Fundación Universitaria de Ciencias de la Salud (FUCS)

On 13/11/2023, at 10:07 PM, Frank Yeh <fran...@gmail.com> wrote:

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