You can use the Image Insertions view of the Image Manager toolspace to show or hide an image.
The Hide operation causes the least change to an displayed image, as compared to unload, erase, or attach. A hidden image is removed from the display, but the frame remains visible and the image data remains in the toolspace tree.
Use Show to restore a hidden image to the display. If an image has been unloaded, a show operation reloads it.