How to add image into imagelist using imageIndex ????

Question

i need to add images to a imageList using image index....how can i do that??? 

i can read the image index by

foreach(listViewItem each in listView1.SelectedItems)
{
 //by each.imageIndex i can get the index of image in listView1.
//so how can i add that image into new imagelist....

imagelist1.Images.Add(???????????????????)
}