I don't know if this answers your question, but you could be importing a sequence of images, if you had the image named with numbers. e.g.
let num 0
repeat 10 [
set num (num + 1)
import-drawing (word "cat" num ".jpg")
This would import cat1.jpg, wait 1 second, then import cat2.jpg, wait 1 second, then import cat3.jpg, etc.
This would create an animation within NetLogo where you'd see all of the different images flash by!