[Insight-users] itk::DiffusionTensor3D fa map
Vikash Gupta
vikash.gupta at inria.fr
Thu Feb 28 04:41:08 EST 2013
Hi
No it is highly unlikely that the FA in the air will be 0.6. o.6 is a high FA and should mostly correspond to WM. I will suggest to mask the image, because the background is generally noise and the tensors from Noise (air) does not hold nay meaning.
Also, may be check manually for a voxel or two inside the brain if you are getting correct FA.
Vikash
----- Original Message -----
> From: "Alba Garin" <agarin at ceit.es>
> To: insight-users at itk.org
> Sent: Thursday, February 28, 2013 10:15:43 AM
> Subject: [Insight-users] itk::DiffusionTensor3D fa map
> Dear all,
> I am computing different DTI maps from an Image with
> itk::DiffusionTensor3D pixel type. If I get MD, Trace, First
> Eigenvalue and other maps, I get a correct map, but If I compute the
> FA map, I get high values (0.6) in the air part of the image (around
> the brain). I mean, even the brain can be distinguished from the
> air, there are values in the air. Is this normal? Have this happened
> to anyone before?
> Thanks in advance.
> Regards,
> Alba
> Alba Garin Muga
> Computer Science PhD Student
> Applied Mechanics Department
> Paseo Manuel Lardizabal, 15
> 20018 Donostia-San Sebastian. Spain
> Tel. +34 943 212 800 (Ext. 2111)
> Fax: +34 943 213 076
> Web: www.ceit.es
> http://intranet.ceit.es/PlantillasCEIT/ImagenCorporativa/Firmas/firma_ceit.gif
> Verde
> Antes de imprimir este e-mail piense bien si es necesario hacerlo. El
> medioambiente es cosa de todos.
> Before printing this e-mail ask yourself if you really need a hard
> copy. We are all responsible for the environment.
> E-mail hau inprimatu baino lehen egiaztatu inprimatzeko beharra.
> Ingurumena guztion ardura da
> _____________________________________
> Powered by www.kitware.com
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.php
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
> Follow this link to subscribe/unsubscribe:
> http://www.itk.org/mailman/listinfo/insight-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.itk.org/pipermail/insight-users/attachments/20130228/cf21fa1b/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.gif
Type: image/gif
Size: 3972 bytes
Desc: not available
URL: <http://www.itk.org/pipermail/insight-users/attachments/20130228/cf21fa1b/attachment.gif>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image002.jpg
Type: image/jpeg
Size: 980 bytes
Desc: not available
URL: <http://www.itk.org/pipermail/insight-users/attachments/20130228/cf21fa1b/attachment.jpg>
More information about the Insight-users
mailing list