We have instant access to CT-scanning at the clinic, with our on-site miniCAT low-dose conical beam scanner.
One study of your sinuses, taken with the miniCAT conical beam CT scanner, exposes you to an amount of radiation equivalent to a skull x-ray.
During a scan with the miniCAT, you are exposed to 0.17 milliSieverts of radiation. This is far less than what you are exposed to during a normal CT scan of the brain (2.00 mSv). In fact, this is far less than the average amount of natural background radiation you are exposed to on earth (~3.1 mSv per year).
With the miniCAT, your sinus scan only takes 40 seconds. Usually it can be completed at the same time as your consultation with Prof Harvey.
If you have had multiple radiological studies- eg. X-rays, MRI, or CT-scans- you can calculate your cumulative radiation exposure, and relative risk from this exposure here. Please note this is an external website, and is not associated with Sydney ENT Clinic.