[Mristudio-users] crash when saving ROI's

[Seongjin]

Salvador,

What I know about difference between AIR and Mutual info based (MUT)
registration, AIR is somewhat sensitive to noise level and has more options
to be determined. What I heard from developer group about the noise level in
AIR is that the noise level should be determined by empirical way. And it
has more options for fitting methods. But which one works better, you should
decide after a couple of trial and errors.
MUT has less option to be determined by user. MUT is based on information
entropy maximization as far as I know. It is one of the good registration
methods. But I have no idea about which one is better between AIR or MUT. I
prefer to use MUT because less user options, which means it is more
automatic. At least, I don't need to play with it to find a proper noise
level for AIR.

Best,
-SC

On Wed, Jul 14, 2010 at 7:09 AM, Castaneda, Salvador <
salvador.castaneda at med.uni-tuebingen.de> wrote:

>  SC
>
> Sorry again, Do you know if there is such a big difference between the
> mutual image registration and the automatic. And what exactly does this do
> just improve the quality of the image all together or what?
> thanks in advanced
>
> Salvador Castaneda
>
>  ------------------------------
> *Von:* mristudio-users-bounces at mristudio.org [mailto:
> mristudio-users-bounces at mristudio.org] *Im Auftrag von *Castaneda,
> Salvador
> *Gesendet:* Mittwoch, 14. Juli 2010 12:14
>
> *An:* DTI Studio, ROI Editor,DiffeoMap Questions/Support
> *Betreff:* Re: [Mristudio-users] crash when saving ROI's
>
>  SC
>
> Thats exactly what i do, i take the image files from dtistudio and load
> them in the roi editor. i wanted to upload an anatomical picture to better
> draw y rois because i work with rats. is it possible to dothis even if the
> matrix and fov are not the same?
> thanks
>
>
>  ------------------------------
> *Von:* mristudio-users-bounces at mristudio.org [mailto:
> mristudio-users-bounces at mristudio.org] *Im Auftrag von *[Seongjin]
> *Gesendet:* Mittwoch, 14. Juli 2010 01:45
> *An:* DTI Studio, ROI Editor, DiffeoMap Questions/Support
> *Betreff:* Re: [Mristudio-users] crash when saving ROI's
>
>  Darren,
>
> I experienced the similar problem. I wanted to use ROI drawn in ROI panel
> but it did not work at all. ROI saving and loading functions seem to work in
> FIBER panel, but not in the ROI panel.
>
> If you want to use ROI for DTI metrics such as FA or ADC measurements, I
> recommend ROIeditor (a companion tool to DTIstudio). That is more powerful.
>
> I always process data in DTI studio. Then load all the processed data into
> ROI editor.
> Finally, do the measurement with ROI editor.
>
> The saved ROIs can be reused in the DTI studio for fiber tracking. However,
> again, the ROIs could not be used in ROI panel of the DTI studio on my
> computers (home computer, laptop, and office computer).
>
> I hope this experience might be a bit of help for your problem in using DTI
> studio.
>
> -SC
>
> On Tue, Jul 13, 2010 at 5:28 PM, Darren Gitelman <
> d-gitelman at northwestern.edu> wrote:
>
>> Hi
>>
>> I am having problems with DTI studio crashing when trying to save ROI's.
>>
>> This happens after I draw an ROI and click the save button. Then a dialog
>> (ROI File Format) comes up giving a choice of different formats. I choose
>> Graphic Compatible (default). After clicking OK, a crash window comes up a
>> few seconds later. It is labeled MriView3D MFC application. The only
>> technical information I can find is the following.
>>
>> AppName: dtistudio-latest-x86.exe     AppVer: 1.0.0.1     ModName:
>> msvcr80.dll
>> ModVer: 8.0.50727.4053     Offset: 00014458
>>
>> This occurs whether I have drawn 1 or more ROIs. (fixed size ROI, oval).
>> The size of the ROI does not matter (4 voxel or 10 voxel)
>> It occurs with DTI studio x86 and x64.
>> It occurs with versions 3.0.2 and 2.4.1 of DTIstudio.
>> It occurs whether I have a complete dataset loaded 35 directions, or even
>> if I load just 1 image and draw an ROI on it.
>> It occurs on an HP core duo 2 system running Windows XP SP3, and on a
>> redhat linux KVM virtual machine running windows XP x64.
>> Reinstalling vcredist_x86 or vcredist_x64 from the DTIstudio website does
>> not help on any of the systems.
>>
>> Any suggestions on how to fix?
>>
>> Darren
>>
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>>
>
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