在解除ModalViewController后刷新父ViewController

In my iOS app, a user can select an image from a list, upon which they are presented with a modal that contains the image and options to delete the image. If the user chooses to delete the image, she is returned to the original viewController containing the list of images. I need to then refresh the original ViewController to take into account the deleted image.In my iOS app, a user can select an image from