[Mristudio-users] Question about automatic bad slice rejection

[susumu mori]

Hi Weihong,

I think Hangyi can give you detailed answer, but I would suggest you
to look into "pixel rejection" option rather than "slice rejection".
In many cases, image corruption is confined in a small area, unless
the subject had bulk motion during a scan. The pixel rejection seems
to work nicely for most of these cases. Please try.

The detailed description can be found here;
https://www.mristudio.org/wiki/changelog/dtistudio-3.0.2

On Tue, May 17, 2011 at 10:35 PM, Weihong Yuan <Weihong.Yuan at cchmc.org> wrote:
> Dear all,
>
> I have some questions regarding the automatic bad slice detection/rejection
> step.
>
> 1. When I select  the option for Automatic Image_Slice rejection, what is
> the definition of the relative_error? Is it some form of difference between
> the slice and the Theory Image? Can you give me the definition, please? The
> default is set to 3%. Is there anything we need to be careful about when
> selecting this number?
>
> 2. Is there a way to "read out" the flag file generated after the automatic
> bad slice rejection? I am trying to compare the DTI studio method and
> another software. If would be great if the flag file can be turned in to a
> text file or a spreadsheet so I can have a list with the volume number and
> slide number for all the rejected slices.
>
> Thanks
> Weihong
>
>
> Weihong Yuan, Ph.D.
> Research Assistant Professor
> Pediatric Neuroimaging Research Consortium
> Imaging Research Center, Dept. of Radiology
> Children's Hospital Research Foundation
> 3333  Burnet Ave.
> Cincinnati, OH 45229
> Phone: 513-636-2862
> FAX: 513-636-0434
>
>
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