[Insight-users] lost origin and direction information when writing image to dicom or analyze format

[Gordon Kindlmann]

hello,

Just wanted to mention that the NRRD file format also has complete  
and lossless representation of all the same orientation and position  
information, as well as representing vector and tensor data, and is  
also supported by ITK.  It is currently used in NAMIC for its  
additional ability to describe the coordinate frame of non-scalar  
data (e.g. diffusion-weighted images).

http://teem.sourceforge.net/nrrd/format.html

Gordon

On Sep 29, 2006, at 1:15 PM, Kent Williams wrote:

> The Analyze format does not save an image origin, so the image  
> origin will always read in as 0,0,0. This is not an ITK problem,  
> but a deficiency of the file format.
>
> Unless you have programs that only read Analyze image files, you'll  
> be much better off to use the NIfTI file format. NIfTI is arguably  
> the most compact and convenient image format to use for medical  
> imaging.  It saves orientation, origin, and spacing in a well- 
> defined format. It also supports a wide range of pixel formats,  
> including vector and complex data.
>
> For really exotic pixel formats that NIfTI doesn't support, the  
> MetaImage format is your best bet.
>
> Zhiyong Xie wrote:
>> I have tried to output itkImage to dicom or analyze file. I  
>> noticed that the origin and direction information
>> are missing in the outputed image. anyone have same experience?  
>> how to fix this problem?
>>  Thanks
>>  Sean
>>
>
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