[Insight-users] Convert 3D image data from Matlab .mat file

[Mengchen Zhu]

Hi,

Thanks Mathieu. The problem is, the 3D data are not "images" in the first place. The ultrasound data are reconstructed from RF signal directly; the CT, I don't know - I am asking the person who gave me the data. 

So the question should be, can I use the matrix in Matlab to construct image in ITK? I have the physical dimension of voxels by the way, so the data indeed can be treated as images, without header that is. 

If no apparent way exists, I will probably use fprintf() to export the mat as text file and construct my image in ITK using the data in the text.

Thanks,
MC

> Date: Sun, 25 Nov 2007 18:30:26 +0100
> From: mathieu.malaterre at gmail.com
> To: mengchen.zhu at hotmail.com
> Subject: Re: [Insight-users] Convert 3D image data from Matlab .mat file
> CC: insight-users at itk.org
> 
> On Nov 25, 2007 9:19 AM, Mengchen Zhu <mengchen.zhu at hotmail.com> wrote:
> >
> >  Hi folks,
> >
> > I have some 3D CT and Ultrasound volume data saved as .mat files, with voxel
> > data type int16; what is the best way to export them into ITK for
> > processing? I guess I could export them as DICOM, but not sure.
> 
> Matlab has built-in support for DICOM (read/write). For writing a
> DICOM file, just go to:
> 
> http://www.mathworks.com/access/helpdesk/help/toolbox/images/index.html?/access/helpdesk/help/toolbox/images/dicomwrite.html
> 
> The question that remains, is where do these images come from ?
> Without knowing the modalities or the proper DICOM object you will not
> be able to create the correct meta data info for the header. This
> would be better to investigate where is the source for those .mat
> files.
> 
> HTH
> 
> -- 
> Mathieu

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