Doctor Atala described the process in a talk recorded by the arts and technology group TED.
VOA: special.2010.10.19
But the Prometheus patent is different, the appeals court said, because in the former case the doctor is passively calculating results while under the Prometheus process the doctor has to administer a drug then adjust the dose based on how the patient responds.
This sometimes becomes a nuisance to doctors, as one thing the patient input derails the thought process of the doctor, also sometimes it allows the patient to doubt about the doctors diagnosis.