[Mristudio-users] MriView3D application close

[susumu]

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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