How to detect if a gameobject collides with a image on a worldspace canvas

If I have a quad in 3d, with a canvas on it, with a image, how can I detect if a object, say a missile collides with the image on the worldspace canvas?
Note the mouse and screen are not involved in this, there is no ‘clicking’ only a missile heading to a quad with a canvas image on it in worldspace.
Thanks!

You should still be able to add a regular box collider to the canvas, or at least to a transparent image that’s taking up the full area of the canvas.

As long as the image attached to it is marked as raycast target, you can detect it with raycasting.