# Error opening an ultrasound .dcm file

**URL:** <https://discourse.slicer.org/t/error-opening-an-ultrasound-dcm-file/22673>\
**Category:** Support\
**Tags:** dicom\
**Created:** [March 24, 2022, 6:28pm UTC](https://discourse.slicer.org/t/error-opening-an-ultrasound-dcm-file/22673 "2022-03-24T18:28:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mariano\_Medina](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/mariano_medina/32/14803_2.png) [@Mariano\_Medina](https://discourse.slicer.org/u/Mariano_Medina)\
**Post date:** [March 24, 2022, 6:28pm UTC](https://discourse.slicer.org/t/error-opening-an-ultrasound-dcm-file/22673/1 "2022-03-24T18:28:23Z")

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I wanted to open a .dcm file of a 3d ultrasound to do the reconstruction in 3d slicer, but when loading the file it detects error, the error message is: “Image spacing may need to be calibrated for accurate size measurements”.  
How can i fix this problem?  
thank´s

Slicer version: 4.13.0-2022-01-03

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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:** [March 26, 2022, 3:27am UTC](https://discourse.slicer.org/t/error-opening-an-ultrasound-dcm-file/22673/2 "2022-03-26T03:27:12Z")

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This warning is displayed because the image sequence plugin can load a wide range of image types and image spacing setting is not thoroughly validated for all of them, so the user should verify it.

This plugin loads a 2D+time image sequence and not a 3D volume. How do you plan to reconstruct a 3D volume from it? What ultrasound system and probe did you use to acquire this data set?