<div>
{dede:field.body runphp=yes}
$string = @me;
$result = preg_replace("/<s{0,}img[^>]+>/i",'',$string);
@me = $result;
{/dede:field.body}
</div>

<div>
{dede:field.body runphp=yes}
$string = @me;
preg_match_all("/<img([^>]*)s*src=('|")([^'"]+)('|")/",$string,$matches);
$imgsrc_arr = array_unique($matches[3]);
foreach($imgsrc_arr as $imgsrc)
{
$result .= "<li><img class="img" src="$imgsrc"></li> ";
}
@me = $result;
{/dede:field.body}
</div>