[Insight-users] Origin of Analyze Format data

[Luis Ibanez]

Hi Tanya,

Since Analyze does not store the origin of the dataset,
you may have to go back to your image provider.

Chances are that there is an origin DICOM dataset
sitting in some directory, or in a PACS system.

When you read the analyze file with ITK the origin
will simply be set to the default of (0,0,0).

You will still be able to register this images.

The only difference is that you have to be careful
with the interpretation of the resulting transform.

That is, the transform will be good enough for
doing things like resampling the image, and
performing visualization, but it will not be
good enough for driving an image guided surgery
system.



Regards,


   Luis


------------
Tanya wrote:
> Dear Insight-Users,
>  
> Where can we find the Origin of an Analyze Format data?
>  
> If Analyze does not save Origin of the data, then how can ITK register 
> the image, since registration should be done in physical coordinate, and 
> to convert from image coordinate to physical coordinate we should now 
> the origin and the spacing?
>  
> Answers would be appreciated.
>  
> TIA,
> Tanya.
> 
>