This is a quick summary of image window/level (brightness/contrast) adjustment changes introduced in recent Slicer Preview (formerly known as “Nightly”) releases. Improved automatic window/level algorithm Images that do not contain preferred window/level information are displayed with automatical…

Could there be an option in settings to enable windowing using the normal mouse cursor as well? working with multiple series and needing to change windows on the go is awkward, i guess for people who are familiar with slicer this will be a bigger bother than of the window accidentally changing, unle…

If you find that you need to modify window/level of multiple volumes then you can keep the mouse mode in window/level mode. You can still pan, zoom, browse slices, etc. and adjust window/level with left-click-and-drag the same way as before. Also, we plan to make it easier to switch between mouse m…

Thanks, keyboard shortcuts would be fine, the issue was more prominent when using segment editor as clicking “none” tool or Esc key disables the windowing mouse, and there is a need to switch back and forth when tweaking the window multiple times

Hi, when I load DICOM series, 3D slicer uses the Window/level found in DICOM tags. However, DICOM series come with a lot of files, it seems 3D slicer uses the DICOM tag found in the first slice. While ITK-SNAP uses the last slice’s DICOM tag. ITK-SNAP usually gives me a better display result. Not su…

[image] ButuiHu: While ITK-SNAP uses the last slice’s DICOM tag. ITK-SNAP usually gives me a better display result. Have you found any reference in ITK-Snap source code that it uses window center&width stored in the DICOM file at all? (I have not, but I’m not that familiar with its source cod…

Check these screenshots: [image] ITK-SNAP [image] 3D Slicer with auto brightness/contrast Maybe you’re right, we could consider using the middle slice’s DICOM tag.

I haven’t encountered a case when window/level was drastically different in first/middle slice. If this is the case for this data set then it would be great to have it for testing. Is this from a public image database? If not, could you anonymize and share it? (you can send me the download link in …

I’m so sorry. The data is from a hospital. We have no permission to share it even after anonymize it.

Recent improvements in window/level management

Support

Topic		Replies	Views
How to handle CT intensity / contrast differences Support	10	1426	September 12, 2021
Can't change the windowing of CT Support	6	2744	May 1, 2019
Setting default window/level? Support	1	776	October 25, 2023
Feedback requested: How to improve mouse interaction in views? Development	20	4429	July 17, 2019
No intensity change at 4.11 Support views	2	638	March 23, 2021

Recent improvements in window/level management

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