[Mristudio-users] DTIStudio keeps crashing

[susumu mori]

Thanks Lisa.

Ryan, please keep us posted if your problem persists with the newer version.

Susumu

On Thu, Nov 19, 2009 at 6:36 PM, <Lisa_Kreber/CNSNEURO at cnsneuro.com> wrote:

> Hi, Ryan:
>
> I was having the same problem that you were with DTI studio crashing. I
> uninstalled it and downloaded the latest version of dti studio (the beta
> version). This has fixed the problem and dti studio has not crashed since.
> Hope this helps you out.
>
> Lisa
>
>
>
>
> ----- Original Message -----
> From: Ryan [wmcgarry at gmu.edu]
> Sent: 11/19/2009 12:55 PM EST
> To: mristudio-users at mristudio.org
> Subject: [Mristudio-users] DTIStudio keeps crashing
>
>
>
> I have a problem similar to the individual below (reported by Hugh),
> where DTIStudio keeps getting an error and crashing. When I try to
> perform any
> calculations like ADC-Map, I get an error saying "The mriView3D MFC
> application has encountered a problem and needs to close." At this
> point the program crashes. I think the error is related to the fact
> that the gradient table doesn't match the number of images, I don't
> know how else to get them to match. I already went through the
> gradient table and made sure there weren't any errors like missing
> commas. I also tried reloading the data with the methods listed by
> Susumu below, but when I look at the gradient table that was reloaded,
> it's not the most recent information (but instead information from a
> previous example data set I used). Please
> let me know what I can do to prevent this error happening, thank you.
>   -Ryan
>
>
> Hi Hugh,
>
> When you got this error, please suspect one of the following two reasons;
>
> 1) Memory shortage:
>
> Even if you have many GB of memories, 32-bit Windows system can allocate
> only 1 - 1.5 GB to each program. To check if you have the memory problem,
> please restrict the slices to be calculated. In the initial data parameter
> window, there is a section called "Slices to be processed". Here you can
> specify only a portion of slices to be processed. Please limit the slices
> to, for example, 0-9 and see how it goes. If you can calculate tensors
> without errors, then you have the memory problem. The solution is; a)
> upgrade to the 64-bit system or b) devide the calculation to 2 batches
> (e.g.
> slice 0-29 for the first batch and 30-59 for the second batch), calculate
> all maps (e.g. FA), and later combine them.
>
> 2) Mismatch between the gradient table and the number of images:
>
> For example, if you specify 12-orientation table and 30 volume images, then
> you get the error. After loading the data and before you go to the Dti Map
> tab, make sure that you have 1 b0 + 64 DWIs in the pull-down menu in the
> right column of the Image tab. If you have the correct number of the
> images,
> then you might have an error in your gradient table. Small mistakes such as
> missing "," are often difficult to detect. The best way is; a) load the
> data
> using DtiMapping under the "File" button on the top left, b) close the
> window, c) open the image paremater window again by clicking "DtiMapping"
> in
> the "File" button again, d) the window still remembers the gradient table
> you entered last time. This remembered window tells how DtiStudio
> interpreted your gradient table. If there is any syntax errors, you may
> find
> them much easier. For example, if you enter, "4: 1 0.5 0", instead of "4:
> 1,
> 0.5, 0", then you would find, "4: 1, 0, 0".
>
> If any of these do not solve the issue, please let us know.
>
> Susumu
>
>  _____
>
> From: mristudio-users-bounces at mristudio.org
> [mailto:mristudio-users-bounces at mristudio.org] On Behalf Of Hugh Wang
> Sent: Wednesday, April 08, 2009 6:30 PM
> To: mristudio-users at mristudio.org
> Subject: [Mristudio-users] MriView3D application close
>
>
> Hi,
>
> I was using the dtistudio (ver. 2.4)  to look at the Siemens DICOM
> diffusion
> images (1baseline,64 gradients). After successfully loading the images, I
> click the "dti map" option at lower right corner. Whatever calculation I
> choose, it always gives me an error:
>
> "MriView3D MFC Application has encountered a problem and needs to close.
>  We
> are sorry for the inconvenience."
>
> I tried several PCs, and the problem keeped the same. I would appreciate
> that if there's anyone having any idea on how to solve it. Thanks.
>
> Best,
> Hugh
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