Orthanc referring doctors

Hello,

maybe somebody can help me with some questions.

First some Information about us and the way we want to use orthanc:

We are a Group of hospitals. Some of our reffering doctors are asking for image data (produced by our radiology).
At the moment this Image data is written to a cd and the Patient is transfering this data to his external doctor.

We want to replace this cd burning for some doctors with orthanc. So we want to send the studies from our PACS to orthanc Server and for example the doctors can then download this data.

I have the following questions:

Is there a possibility to use permissions for studies? So a doctor can only see studies for his Patient? Or is the only Workaround to start multiple orthanc instances?
Is it possible to download studies as zip file. Is it also possible to add a dicom dir file?
Is it possible to add a more poweful web Viewer?

Thank you

Regards

Marc

You can do all these things by creating a web site with php and orthanc rest api to add user interface that allow user login and integrate web viwer or downloa zip archives