Correct Method For Adding Images To An RSS Feed?

Managed to include the images by inserting inside the CDATA section as follows:

$text = $row['text'];
$image = '<p><img class="center" src="' . $row['mediumURL'] . '"  alt="' . $row['htmlAlt'] . '"/></p>';
$description = $image . $text;

$rssfeed .= '<description><![CDATA[' . $description . ']]></description>' . "\n\t";

http://www.pearsonified.com/2007/06/how-to-format-images-for-feed-readers.php#comment-185597

<rss version="2.0" xmlns:media="http://search.yahoo.com/mrss/">

http://video.search.yahoo.com/mrss