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- From: tom fogal <tfogal@alumni.unh.edu>
- To: iv3d-users@sci.utah.edu
- Subject: [IV3D-USERS] Re: Re: Re: Wow - there's my brain
- Date: Sun, 06 Dec 2009 18:29:49 -0700
Hi David,
Sorry for the slow reply on this.
David Koontz <davidakoontz@gmail.com> writes:
>
I sent some crash reports back to you via the tool - with data sets.
Thanks very much for the example data set. It took some doing, but I
finally figured out what we were doing wrong here && committed a fix.
I kicked all our build machines. All the builds should be updated by
Monday. Please try the latest devbuild [1] && speak up if that doesn't
fix the issue for you.
Thanks for the report && again, sorry the fix took so long. Cheers,
-tom
[1]
http://www.sci.utah.edu/devbuilds/imagevis3d/
>
On Oct 17, 2009, at 7:32 PM, tom fogal wrote:
>
>
> <david@koontz.name> writes:
>
>> I have MRI images of my brain - but when I try to load them into iv3d
>
>> the 3d image appears to be an "exploded - assembly" type of image.
>
>> By that I mean it looks more like a image of a hamburger with the bun
>
>> floating above the pickles floating above the tomato above the beef
>
>> above the bun. To be speckic the ventricals are on top of the stack
>
>> of brain parts. Weird.
>
>
>
> `This is your brain on drugs.'
>
>
>
> Seriously though -- that does sound quite strange. My guess is that
>
> you're hitting a bug.
>
>
>
>> It was converted from a CD of MRI data from 2002 -
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>>
>
>> How do I tell what data types iv3d can and cannot convert?
>
>
>
> You could filter by file extensions in the file loader box. For more
>
> details though, we list and discuss the supported file formats in the
>
> manual:
>
>
>
> http://www.sci.utah.edu/images/docs/imagevis3d.pdf
>
>
>
> Loading data is discussed on page 13.
>
>
>
>
>
> I don't think the file format is the issue though; sounds like it's
>
> just a bug in the DICOM parser. Since you've got an MRI of a brain,
>
> I'd guess you've got a DICOM or a set of DICOMs, so there might just
>
> be
>
> a bug in the DICOM parser.
>
>
>
> Is there any chance you could send us the data files?
>
>
>
> The best way to report a bug is to use the "Report an Issue" dialog.
>
> This is discussed on page 37 of the aforementioned manual. Please do
>
> report an issue via this dialog, even if you don't feel comfortable
>
> sending us the data files. The main reason for using this dialog is
>
> the "Submit Debug Log" checkbox, which (when checked) gives us
>
> detailed
>
> information on the data file's specifications. If you are comfortable
>
> sending us the data, there is a method to submit data files in that
>
> dialog.
>
>
>
> Please note that there are privacy concerns associated with sending
>
> DICOMs to other people. One way to mitigate this problem is to
>
> anonymize your DICOM before sending it; SCI provides no such tool, but
>
> a quick google search for "dicom anonymizer" looked promising. Of
>
> course, this point's a bit moot given we know what kind of data you'd
>
> be sending...
>
>
>
>> How does one know what type of data file they have - are there magic
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>> strings in the data file?
>
>
>
> Generally, yes. Usually the first few bytes are enough to figure it
>
> out. A quick scan of the DICOMs I have suggest that the first 3 bytes
>
> of all DICOMs are the three characters "DIC", but I haven't verified
>
> this (e.g. by looking at any of the DICOM specs).
>
>
>
> Cheers,
>
>
>
> -tom
- [IV3D-USERS] Re: Re: Re: Wow - there's my brain, tom fogal, 12/06/2009
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