âOur priority has to be get a patient management system back that gives us access to peopleâs information so even things like blood transfusion, matching bloods, looking at previous records for medication, allergies, etc, we do not have any access.â Ms OâConnor told the programme that the HSEâs system had been very significantly compromised and at this stage it did not know how much data had been accessed by hackers. Appointment cancellations HSE website which was being updated throughout the day with information on cancellations. She said virtually all radiology appointments across the board for procedures such as an x-ray, an MRI or CT scan have been cancelled.