# Can't use DICOM data to reconstruct 3D model

**URL:** https://discourse.vtk.org/t/cant-use-dicom-data-to-reconstruct-3d-model/6424
**Category:** Support
**Created:** [August 19, 2021, 9:26am UTC](https://discourse.vtk.org/t/cant-use-dicom-data-to-reconstruct-3d-model/6424 "2021-08-19T09:26:43Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![jjjkk](https://discourse.vtk.org/user_avatar/discourse.vtk.org/jjjkk/32/3720_2.png) [@jjjkk](https://discourse.vtk.org/u/jjjkk)
#### Post date: [August 19, 2021, 9:26am UTC](https://discourse.vtk.org/t/cant-use-dicom-data-to-reconstruct-3d-model/6424/1 "2021-08-19T09:26:43Z")

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I follow the tuturrial in [https://kitware.github.io/vtk-examples/site/Cxx/Medical/MedicalDemo2/](https://kitware.github.io/vtk-examples/site/Cxx/Medical/MedicalDemo2/)  
I got the right result.  
But when I change the Reader from vtkMetaImageReader to vtkDICOMImageReader.  
The output is just a outline box without model as below.  
 ![image](https://discourse.vtk.org/uploads/default/original/2X/d/d94f519f6f5d1287ef43a472313c22736dc113b8.png)

DICOM I used can be show in ImageViewer2, so is there some other thing should be done when I use DICOMReader to extract surface?

![image](https://discourse.vtk.org/uploads/default/original/2X/2/25baf0ea7f2eb92b2ee8558c8089aa5332a713be.png)  
the ImageViewer2 result

PS: the DICOM data serial I use has no metedata file.

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<div class="post-metadata">

### Author: ![jjjkk](https://discourse.vtk.org/user_avatar/discourse.vtk.org/jjjkk/32/3720_2.png) [@jjjkk](https://discourse.vtk.org/u/jjjkk)
#### Post date: [August 20, 2021, 7:08am UTC](https://discourse.vtk.org/t/cant-use-dicom-data-to-reconstruct-3d-model/6424/2 "2021-08-20T07:08:43Z")

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I solved it!  
the new dicom file I use have a different value range.  
As I use the range in (0,500), all noise point is included.  
So the output model is down.  
Use a range of (0,200) solve it.