Tom,
Thanks for your reply. I've gotten it to work. I had to try a few different things but this finally worked just as I wanted it to. Here is the final code for lines 125 through 132.
$imagepath = array();
$folder = $this->getStudiesImageFolder();
$path = $folder .'/'. $image;
if (substr_count($image,'/')) {$path = $image;}
$imagepath = $this->getImagePath($path);
$imagepath->width = 200;
$imagepath->height = auto;
return $imagepath;
I've added these two lines which I can make any width and the height will auto size accordingly.
$imagepath->width = 200;
$imagepath->height = auto;
You could also use this for the getSeriesThumbnail section but I needed it for the Studies list page which is my landing page.
Again, thanks for your help pointing me in the right direction.