It is possible, you can place static render images in the extra-assets folder and use the HTML Label extension to show them. For example, if your render is called `kitchen-render.jpg’, the HTML Label code can be:
<img style="min-width: 75vw"` src="$EXTRA_ASSETS/kitchen-render.jpg">
See also this post: Adding a 'trigger or icon' which opens an information box - #8 by Oli