vtws_describe of products not quite right?

As part of the result of the above call I see:

` [29] => Array ( [name] => imagename [label] => Product Image [mandatory] => [type] => Array ( [name] => string )

                [isunique] => 
                [nullable] => 1
                [editable] => 1
                [default] => 
            )

`

But a product can have multiple images... So my question is, how, using the server API, do I identify information about a product's images?