# Generate digitally reconstructed radiograph from 3DCT

**URL:** <https://discourse.slicer.org/t/generate-digitally-reconstructed-radiograph-from-3dct/2010>\
**Category:** Support\
**Created:** [February 2, 2018, 2:56pm UTC](https://discourse.slicer.org/t/generate-digitally-reconstructed-radiograph-from-3dct/2010 "2018-02-02T14:56:19Z")\
**Posts on this page:** 1\
**Showing post:** 17

<div class="post-metadata">

**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:** [January 19, 2021, 8:33pm UTC](https://discourse.slicer.org/t/generate-digitally-reconstructed-radiograph-from-3dct/2010/17 "2021-01-19T20:33:04Z")

</div>

> [@Moeka\_Chan](#):
>
> I used the Extension Wizard

You can install extensions using Extensions Manager.

> [@Moeka\_Chan](#):
>
> is there any method to create DRR?

There are several methods, they have all pros and cons, so you can choose the one that best fits your needs:

- Using volume rendering module: magnitudes faster than any other methods, projection is set up by the 3D view’s camera, you can control properties of the X-ray, materials, and processing in the imaging system using a transfer function
- SlicerRT: new DRR module in SlicerRT, projection parameters are set up using beams, see above for details
- Thick slab reformatting using “mean” slab mode: projection parameters uses slice position and normal, can only compute parallel projection, see [topic](https://discourse.slicer.org/t/generate-2d-x-ray-image-from-volume-just-like-drr/976) and [script](https://www.slicer.org/wiki/Documentation/Nightly/ScriptRepository#Thick_slab_reconstruction_and_maximum.2Fminimum_intensity_volume_projections) for details
- SlicerDRR generator: I don’t know much about this one, you need to contact the author if you have any questions

---

_[View the full topic](https://discourse.slicer.org/t/generate-digitally-reconstructed-radiograph-from-3dct/2010)._