[Vv] [Elastix] Registering two MRI volumes

[Simon Rit]

Hoi Roy,
Thanks for the report. Would you be able to share your data so that we
can have a look? You can either attach them to a bug report
(http://kingkong.grid.creatis.insa-lyon.fr:9002/projects/vv/issues)
that can be anonymous or your can send them by email to me.
Thanks !
Simon

> ---------- Forwarded message ----------
> From: Pelt, R.F.P. van <R.F.P.v.Pelt at tue.nl>
> Date: 6 November 2012 13:09
> Subject: [Elastix] Registering two MRI volumes
> To: "elastix at bigr.nl" <elastix at bigr.nl>
>
>
> Dear all,
>
>
>
> I recently started to look into Elastix.
>
> After experimenting with the examples, I’m trying to register two
> MRI-acquired volumes (SSFP).
>
>
>
> In contrast to the example data, these data have their direction cosines
> set, and a different origin set in world coordinates.
>
> I can use vv to overlay the two data sets, but somehow the sliders are set
> at an offset, while the values are zero?
>
> As soon as I drag the slider, the bit of initial alignment flicks away, and
> there is no means to do a manual registration.
>
> Is this some issue with vv?
>
>
>
> Also my first attempt to register these two volumes did not succeed, not
> even with the most basis TranslateTransform setting.
>
> I’ve played around with the scales, but all to no avail.
>
>
>
> Could you provide me some hint on what I might be doing wrong?
>
>
>
> Thanks.
>
>
>
> -Roy
>
>
>
> Fixed:
>
> HeaderSize = -1
>
> ObjectType = Image
>
> NDims = 3
>
> BinaryData = True
>
> BinaryDataByteOrderMSB = False
>
> CompressedData = False
>
> TransformMatrix = 0.0 1.0 0.0 0.0 0.0 1.0 1.0 0.0 0.0
>
> Offset = 12.543 -16.259 19.749
>
> AnatomicalOrientation = RAI
>
> ElementSpacing = 1.118 1.118 0.9
>
> DimSize = 224 224 130
>
> ElementType = MET_USHORT
>
> ElementDataFile = fixed_ssfp.vtk
>
>
>
> Moving:
>
> HeaderSize = -1
>
> ObjectType = Image
>
> NDims = 3
>
> BinaryData = True
>
> BinaryDataByteOrderMSB = False
>
> CompressedData = False
>
> TransformMatrix = 0.0 1.0 0.0 0.0 0.0 1.0 1.0 0.0 0.0
>
> Offset = 9.086 -12.779 48.65
>
> AnatomicalOrientation = RAI
>
> ElementSpacing = 1.09 1.09 0.9
>
> DimSize = 224 224 105
>
> ElementType = MET_USHORT
>
> ElementDataFile = moving_ssfp.vtk
>
>
>
>
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>