[Typo3-dev] imgResource => alt-Tag?

[Georg Ringer]

Hello,

I use the following code to manipulate/generate an image:
$imgTSConfig = Array();
$imgTSConfig['file'] = $path;
$imgTSConfig['file.']['maxW'] = $this->config['width'];
$imgTSConfig['file.']['maxH'] = $this->config['height'];

and I also want to create a alt-tag and I don't know how...
I didn't find anything in the tsref, 
http://typo3.org/documentation/document-library/doc_core_tsref/imgResource/, 
is there anything I haven't seen?

many thanks
georg