# How can I find midsagittal slice from dicom file

**URL:** <https://discourse.slicer.org/t/how-can-i-find-midsagittal-slice-from-dicom-file/32954>\
**Category:** Support\
**Tags:** dicom\
**Created:** [November 22, 2023, 12:14pm UTC](https://discourse.slicer.org/t/how-can-i-find-midsagittal-slice-from-dicom-file/32954 "2023-11-22T12:14:56Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Nutchanon\_Hemapattam](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/nutchanon_hemapattam/32/68410_2.png) [@Nutchanon\_Hemapattam](https://discourse.slicer.org/u/Nutchanon_Hemapattam)\
**Post date:** [November 22, 2023, 12:14pm UTC](https://discourse.slicer.org/t/how-can-i-find-midsagittal-slice-from-dicom-file/32954/1 "2023-11-22T12:14:56Z")

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I want to annotate the landmark in sagittal plane, but I can’t find the midsagittal slice.

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/1/8/1830fa9d1d3337c21873a154e29a44eefd3437be.jpeg)

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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:** [November 22, 2023, 12:21pm UTC](https://discourse.slicer.org/t/how-can-i-find-midsagittal-slice-from-dicom-file/32954/2 "2023-11-22T12:21:58Z")

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All the sagittal slices are displayed in the Yellow slice viewer, including the midsagittal one.

To locate the middle slice, probably the easiest is to enable display of slice intersections in the toolbar and hold down the Shift key while moving the mouse (do not click the mouse button) in the axial (red) slice view:

 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/1/f12fa26bfa502bbd19172719db5688b388fbabe7.jpeg)

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**Author:** ![Nutchanon\_Hemapattam](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/nutchanon_hemapattam/32/68410_2.png) [@Nutchanon\_Hemapattam](https://discourse.slicer.org/u/Nutchanon_Hemapattam)\
**Post date:** [November 22, 2023, 3:34pm UTC](https://discourse.slicer.org/t/how-can-i-find-midsagittal-slice-from-dicom-file/32954/3 "2023-11-22T15:34:52Z")

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I’m so grateful for your help. Thank you for your advice.

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**Author:** ![Nutchanon\_Hemapattam](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/nutchanon_hemapattam/32/68410_2.png) [@Nutchanon\_Hemapattam](https://discourse.slicer.org/u/Nutchanon_Hemapattam)\
**Post date:** [November 25, 2023, 4:15pm UTC](https://discourse.slicer.org/t/how-can-i-find-midsagittal-slice-from-dicom-file/32954/4 "2023-11-25T16:15:03Z")

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Excuse me sir, I have one more question.  
How can we be sure that the selected slide is actually the middle slide?

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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:** [November 25, 2023, 5:51pm UTC](https://discourse.slicer.org/t/how-can-i-find-midsagittal-slice-from-dicom-file/32954/5 "2023-11-25T17:51:26Z")

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In the axial (red) view you can see when the yellow slice is in the middle.