only display specific image from foreach()

[JamieWarren09]

foreach($get->artist->image as $image) {
$image = (array) $image;
    echo 'İmage Text = '.$image['#text'].'<br />
        İmage Size = '.$image['size'].'<br />';
} 

Displays

İmage Text = http://userserve-ak.last.fm/serve/34/210303.jpg
İmage Size = small
İmage Text = http://userserve-ak.last.fm/serve/64/210303.jpg
İmage Size = medium
İmage Text = http://userserve-ak.last.fm/serve/126/210303.jpg
İmage Size = large
İmage Text = http://userserve-ak.last.fm/serve/252/210303.jpg
İmage Size = extralarge
İmage Text = http://userserve-ak.last.fm/serve/500/210303/Coldplay.jpg
İmage Size = mega

I only want it to display the extra large image ( İmage Text = http://userserve-ak.last.fm/serve/252/210303.jpg
İmage Size = extralarge)

How would I do this?

Jamie