niftiread niftiwrite cycle inappropriately changes image orientation

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Randolph Otto
Randolph Otto 2020-3-20
评论： Devineni Aslesha 2020-9-15
Hello,
I have neuroimaging files which I have exported from Slicer as NIFTI files.
The following code snippet should produce outputImage.nii as an exact copy of inputImage.nii, but it does not.
filename = 'inputImage.nii'
im = niftiread(filename);
info = niftiinfo(filename);
niftiwrite(im,'outputImage.nii',info)
When I load outputImage.nii in Slicer, it is shown in a different orientation and location as inputImage.nii. I have found Slicer to be extraordinarily reliable for importing and exporting medical imaging data properly, so I do not think there is any error in Slicer. Even if there were, MATLAB should not have introduced any changes between inputImage.nii and outputImage.nii, so there is still evidence of a problem in MATLAB's functions even if there were a problem with Slicer.

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回答（1 个）

Devineni Aslesha
Devineni Aslesha 2020-3-23
Hi Randolph,
I have heard that the issue with niftiwrite function is known and the concerned parties may be investigating further.

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