Image stacks such as for CTs and MRIs can be created by choosing "Edit source" and adding for example the following code (resultant stack displayed at right):
{|class="wikitable"|
<nowiki>{{Imagestack</nowiki>
<br>|width=250
<br>|File:Computed tomography of human brain (14).png|
<br><nowiki>}}</nowiki>
|}
To make it easier for both yourself and the reader, limit the stack to only the images necessary to demonstrate the conditions at hand.