The day before the treatment the patient is admitted to the Department of Neurosurgery.
On the day of admission MRI images and blood samples are taken as needed.
On the morning of the treatment an assistant introduces a canuole into the upper arm of the patient, needed for the injection of contrast materials for CT images.
The first step of installing the positioning head frame is the administration of
local anesthesia by the assistants. This takes place at four different spots around the skull two on the back and two on the front.
There is an about 15-20 minutes wait for the anesthesia to properly set in.
The frame is attached to the skull using four sterile screws. The patient is only experiences an obtuse pressure, without any feel of a sharp pain.
When the headframe is in place a 3 dimensional CT image is taken with the injection of some contrast material to enhance the images.
As a result of the contrast material the patients sometimes feel a little warmness.
After the CT the patients are transported to the Rotating Gamma Institute located a few minutes away from the Department of Neurosurgery.
The patients are escorted into a comfortable wait room, where they can rest, read, or watch TV.
While the patients wait, the neurosurgeons and physicists prepare the radiation dose plan using a state of the art computer based treatment planning system.
When the plan Is ready the patients enter the treatment room where the GammaART-6000 rotating gamma unit is located.
The machine looks similar to an MRI machine with a movable couch.
The headframe on the patient's head is attached to a holder that prevents the unintended move of the head during the treatment.
During the treatment the patient is continuously observed with video cameras. There is also an intercom unit for verbal communication.
When the treatment is finished the headframe is removed and a small covering bandage is applied.
The patient is escorted back to the waiting room for a small rest and then transported back to the Department of Neurosurgery.
The day after the treatment the patient is released from the Department of Neurosurgery.