# CT image filtering/preprocessing

**URL:** https://discourse.slicer.org/t/ct-image-filtering-preprocessing/28427
**Category:** Support
**Created:** [March 17, 2023, 1:34pm UTC](https://discourse.slicer.org/t/ct-image-filtering-preprocessing/28427 "2023-03-17T13:34:58Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![bserrano](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/bserrano/32/17034_2.png) [@bserrano](https://discourse.slicer.org/u/bserrano)
#### Post date: [March 17, 2023, 1:34pm UTC](https://discourse.slicer.org/t/ct-image-filtering-preprocessing/28427/1 "2023-03-17T13:34:58Z")

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Hi all,

I am working with heart CT images. Sometimes the quality is low and vessel walls are blurred. Commercial software is capable of preprocess images to obtain results such as:

 ![imagen](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/d/6/d6fd8fec3d598c9ffa5d6619f070326c11601042.jpeg)

I tried a combination of filters in “Filtering” \> “Denoising”, but I wonder if anyone knows a better preprocessing tool. In addition, is it possible to obtain the stretched vessel?

Thanks 🙂