Hi vrub! Thanks for your feedback!
I will publish a new version shortly to fix the individual file support. In my case, it was displaying the data but also some php warnings about not set values.
Regarding the gallery, I added more info there: https://dwvblog.co.nf/2015/11/11/dicomsupport-gallery/ on how to use it. I will copy it to the wordpress plugin page.
JPEG2000 encoded DICOM data is not yet available with this plugin. I will see if I can add it.
