# how to adjust the volume position base on image slice
**URL:** https://discourse.vtk.org/t/how-to-adjust-the-volume-position-base-on-image-slice/2512
**Category:** Support
**Created:** [January 29, 2020, 5:16am UTC](https://discourse.vtk.org/t/how-to-adjust-the-volume-position-base-on-image-slice/2512 "2020-01-29T05:16:02Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@yuhuimoon](https://discourse.vtk.org/u/yuhuimoon)
#### Post date: [January 29, 2020, 5:16am UTC](https://discourse.vtk.org/t/how-to-adjust-the-volume-position-base-on-image-slice/2512/1 "2020-01-29T05:16:02Z")
Hi,
My program can render image slice(sagittal, coronal and axial orientation) from DICOM data and the volume base on the DICOM data in a window. But the volume position is not what I want. It’s outside of the slice bound range.
I want to adjust the volume to the correct position like the demo show in the following picture:
I don’t want to adjust the position of the volume manually by setting matrix on UI. I want to my program can do this automatically. I have no idea to realize it. Can some one give me some tips or reference sourc code.
Thanks in advance!
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### Author:  [@lassoan](https://discourse.vtk.org/u/lassoan)
#### Post date: [January 29, 2020, 5:45pm UTC](https://discourse.vtk.org/t/how-to-adjust-the-volume-position-base-on-image-slice/2512/2 "2020-01-29T17:45:52Z")
If the images are two different scans then you can align them automatically using intensity-based image registration. You can use ITK or ITK-based registration libraries, such as Elastix.
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### Author:  [@yuhuimoon](https://discourse.vtk.org/u/yuhuimoon)
#### Post date: [April 6, 2020, 8:51am UTC](https://discourse.vtk.org/t/how-to-adjust-the-volume-position-base-on-image-slice/2512/3 "2020-04-06T08:51:12Z")
I successfully adjust the position of the volume by using **GetSFormMatrix()** from the reader. The volume and the reslice are from the same image source.
```
//m_imgReader is an object of vtkNIFTIImageReader
vtkSmartPointer matImage = m_imgReader->GetSFormMatrix();
vtkSmartPointer transf = vtkSmartPointer::New();
transf->SetMatrix(matImage);
transf->PostMultiply();
transf->Concatenate(m_vtkVolume->GetMatrix());
m_vtkVolume->SetUserTransform(transf);
```
If they are from the different images, I use Elastix and it works well.
Thanks! 😀
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### Author:  [@kookoo9999](https://discourse.vtk.org/u/kookoo9999)
#### Post date: [July 26, 2021, 5:06am UTC](https://discourse.vtk.org/t/how-to-adjust-the-volume-position-base-on-image-slice/2512/4 "2021-07-26T05:06:42Z")
Great… Can I get the this Source Code??
My program can render image slice… but as I add reslice actor to Volume , Image is broken like this Picture.
