More suggestions for ITK-Snap

[Dorian Pustina]

Since we are in vein of suggestions here are what I miss in Snap:

1. The most important thing is to be able to overlay images of different resolution. This need occurs more often than we think, at various contexts, within subject, between subjects, etc. Registering/resampling requires another software, some knowledge, and some time, not exactly ideal for simply overlaying to images.

2. This point is related to 1. I found that having the images not orient in physical space is sometimes misleading. For example, if I open two snap windows, an MPRAGE (AC-PC orientation) and a T2 hippocampal sequence (oblique orientation), the images appear both straight, and there is no way to understand if they have a good alignment with each other. The only solution is to point at one image and check if the point corresponds on the other image, but even this is a guess work since the slices appear different because of the different orientations. It may help having an option to show images in physical space orientation.

3. This is on the personal side. I use MS Surface to draw lesions. The arrows of the right scrollbar are too small to move slice by slice, and with a tablet on the hand its not really an option using the keyboard shortcuts. It might be good to have a solution to this, bigger arrows, complementary buttons, or something. These tablets are great for drawing lesions and chances are people will use a pen and a touch screen in the future to draw lesions.

[Dorian Pustina]

Another idea is to add a collapse/expand transparent button so that all images can switch to "overlay" or "base layer" at once. Here is a screenshot idea:

And another one is to have ITKsnap detect automatically the similarity in names, and perhaps drop similar parts from filenames, and display only the part of the filename that is different. I.e., above should be DWI, T1, Flair instead of VSD VSD VSD.

Dorian

[Dorian Pustina]

Hi all,

Don't know if these suggestions are even being sent to the mailing list, but here is one more.

--> Have a setting to display label contours (outer voxel layer) instead of the whole label. This is very useful when drawing lesions, but also when inspecting masks, in order to have a clear view of the image with the mask only as an outline of a region. The easiest way to get this is by performing a 1 voxel erosion followed by a subtraction.

Dorian

[Paul Yushkevich]

Hi Dorian

Thank you for these suggestions. Definitely your main one, being able to load images that are in different "voxel spaces", is under development, and should appear in version 3.6 (down the road). 

Paul

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Paul A. Yushkevich, Ph.D.
Associate Professor
Penn Image Computing and Science Laboratory
Department of Radiology
University of Pennsylvania