# The size of the segmentation image (DICOM-SEG) does not match the size of the main image (DICOM)

**URL:** <https://discourse.slicer.org/t/the-size-of-the-segmentation-image-dicom-seg-does-not-match-the-size-of-the-main-image-dicom/16115>\
**Category:** Support\
**Tags:** segmentation, dicom\
**Created:** [February 21, 2021, 5:41am UTC](https://discourse.slicer.org/t/the-size-of-the-segmentation-image-dicom-seg-does-not-match-the-size-of-the-main-image-dicom/16115 "2021-02-21T05:41:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![cnhwl](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cnhwl/32/10015_2.png) [@cnhwl](https://discourse.slicer.org/u/cnhwl)\
**Post date:** [February 21, 2021, 5:41am UTC](https://discourse.slicer.org/t/the-size-of-the-segmentation-image-dicom-seg-does-not-match-the-size-of-the-main-image-dicom/16115/1 "2021-02-21T05:41:14Z")

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Operating system: win 10  
Slicer version: Slicer 4.11

Hi Everyone,

As shown in the figure, I downloaded the LIDC-IDRC dataset and standardized representation of the TCIA LIDC-IDRI annotations using from TICA , and then use the dcmqi to convert DICOM-SEG format files to nrrd format files.  
They can be opened and feature extraction well in 3D-Slicer, but I want to use the python library radiomics with programming to do feature extraction, and the dimension does not match when reading the data. Similarly, when reading those data with ITK-snap the same problem also appeared at the time, is there any way to solve it? Or, is there any way to change the dimension of the 512_512_8 annotation file to be the same as the 512_512_133 of the source image?

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/6/2/62dc654afb5bb0ab1dff3c581140e811a38f3271.png)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/a/2/a2c88f9500cffe0b16e67d49d120e59bf993c0d0.png)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/e/6/e6ccda3cdc542e851436f356e2461285ab2fa4d2.jpeg)  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/7/a/7ae0f982b3f76dd0c9c218b0cea1c69099a2dcce.jpeg)

Thank you all !!!

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [February 21, 2021, 5:41am UTC](https://discourse.slicer.org/t/the-size-of-the-segmentation-image-dicom-seg-does-not-match-the-size-of-the-main-image-dicom/16115/2 "2021-02-21T05:41:34Z")

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A post was merged into an existing topic: [The size of the segmentation image (DICOM-SEG) does not match the size of the main image (DICOM)](https://discourse.slicer.org/t/the-size-of-the-segmentation-image-dicom-seg-does-not-match-the-size-of-the-main-image-dicom/16114)

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**Author:** ![lassoan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/lassoan/32/13_2.png) [@lassoan](https://discourse.slicer.org/u/lassoan)\
**Post date:** [February 21, 2021, 5:41am UTC](https://discourse.slicer.org/t/the-size-of-the-segmentation-image-dicom-seg-does-not-match-the-size-of-the-main-image-dicom/16115/3 "2021-02-21T05:41:34Z")

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