I’m fairly new to slicer as well and am working on lesion mapping of brain MRI and CT images.
All my files are in DICOM and I was successful uploading, working with and mapping the MRI images. However, when I open the CT scans I see a fairly grey image with white skull and lack of brain tissue differentiation. It doesn’t look at all like the CT scan when I view it outside of slice (changing the contrast doesn’t solve the problem).
I searched for answer and someone suggested making sure I import with single file boxes un ticked (which I did). Nothing seem to work. Do you have any suggestions of what might be going on?
You can set brightness/contrast (window width/level) of CT images to highlight bones or soft tissues, and these settings are quite different. You should be able to see brain if you go to Volumes module and set window/level to W: 80, L: 40.
CTBrain sample data set shown with default W/L settings:
W and L are width and level (center) of the displayed intensity range. I chose 80 and 40 by looking at the image while adjusting the slider, but CT intensity values are standardized, so this setting should work for most images.
Hello, I have many CT images and want to set them all to W: 80 and L: 40. Is there a way to do it to all of them at once without changing it individually for each one?