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RadiAnt DICOM Viewer - Discussion Forum
PET_CT fusion

Jun 29, 2012 03:18 AM
by Ojwang
I am trying to fuse my PET and CT scans but the button for doing this is not active. Any idea why? Also since the pixel size for the PET scans are 128x128 and that for CT are 512x512 is there a method implemented in the code to downsample the CT scans before fusing the two?
Jun 29, 2012 03:32 AM
by Ojwang
OK, I take my question back, it is pretty straight forward. What I would like to know is how to export the fused PET-CT scans in DICOM format.
Jun 30, 2012 12:13 PM
by RadiAnt
Currently PET-CT fused images can only be exported to JPEG/BMP/WMV files.
Aug 6, 2012 07:18 PM
by Twonky
Straight forward? Could you please share your knowldge? I am trying the same thing too! :-)
Aug 8, 2012 07:07 AM
by RadiAnt
1. Open PET/CT study.
2. Split screen into two panels
3. Drag a CT series into the first and a corresponding PET series into the second panel.
4. Activate a panel with the CT series (by clicking it)
5. Click fusion button or use Ctrl + Alt + F keyboard shortcut

You can watch the entire process in one of our videos: (RadiAnt DICOM Viewer 1.0.4 - new features)
Aug 9, 2012 11:28 AM
by Twonky
OK, thanks! But: I have a PET/CT study, this is already fusioned on my patients-cd! I now have a MRT and want to fusion it with my PET! Is this possible with your software? If not can you name me a alternative free software?
Aug 9, 2012 12:29 PM
by RadiAnt
Only series from the same study can be fused, so in your case fusion is not possible in RadiAnt. I'm not aware of any free software for Windows PC that can perform such fusion...
Sep 5, 2012 12:58 PM
by jk
is there a way to change the color palette to the commonly used "hot iron" for pet/ct fusion? would be great!
Sep 5, 2012 02:45 PM
by RadiAnt

Currently it's not possible... However, we will probably add this feature in the next beta version :-)
Oct 21, 2012 11:37 PM
by Daniel
Yes, it would be great if you do this...
Oct 24, 2012 10:55 AM
by @Twonky
You can try MIPAV and corregistration, but I don't know if it will work + it's not straightforward at all, MIPAV is not a DICOM viewer software, it is a processing / segmentation tool.
Oct 4, 2015 04:40 AM
by Marco
what's range of number in Color Scales chart in Fusion regarding to what subject ?
Thanks in advance.
Oct 5, 2015 07:54 PM
by RadiAnt
The range of values on the color scale reflects the minimum and maximum values of the fused image (PET). If possible, these values are represented in SUV.
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