# Question in general registration(BRAINS)

**URL:** https://discourse.slicer.org/t/question-in-general-registration-brains/23106
**Category:** Support
**Created:** [April 24, 2022, 1:10pm UTC](https://discourse.slicer.org/t/question-in-general-registration-brains/23106 "2022-04-24T13:10:21Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Rui\_Zhuang](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/rui_zhuang/32/7214_2.png) [@Rui\_Zhuang](https://discourse.slicer.org/u/Rui_Zhuang)
#### Post date: [April 24, 2022, 1:10pm UTC](https://discourse.slicer.org/t/question-in-general-registration-brains/23106/1 "2022-04-24T13:10:21Z")

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when I use general registration(BRAINS) to compare two ct volume, in the fixed image volume and moving image volume is the same ct volume. However, I have imported the two CT volumes, the Beforeopration and the Afteropration. How could I solve the problem?

 ![1](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/0/a/0a0b0801cea57b88b9bf3e2b25699827429aca77.jpeg)  
 ![2](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/f/9/f91346421c3d15e1eb4f2681d6933db8444515f8.jpeg)  
 ![3](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/1/b/1bf6ba9df4c9c5445e0b894dfb483c22ae889253.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: [April 24, 2022, 7:54pm UTC](https://discourse.slicer.org/t/question-in-general-registration-brains/23106/2 "2022-04-24T19:54:35Z")

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The images detected as a time sequence and got loaded as a MultiVolume. MultiVolume nodes don’t show up in scalar volume selectors, so you cannot select it as input in the registration module.

I would recommend to enable “Advanced” option in the DICOM module and load the images as separate scalar volumes.