Once again it goes back to what we are trying to do. We triage very cautiously every single request made to nuclear medicine departments across Canada, and as a matter of fact across the world, to minimize the use of radiation by using the ALARA principle. That's the principle we're using, so I don't think we can cut much more than we have right now.
Let me give you an example. In the past, we were using carbon-14 to do breast tests. Carbon-14 is a radioactive isotope. Now we have switched towards carbon-13, which is not a radioactive isotope, in order to do those breast tests. I think you're going to find that the nuclear medicine community is extremely responsible when it comes to the use of radioisotopes; if there is any other test that we can recommend, we do recommend it. However, you need to understand that nuclear medicine essentially looks at the function of the organs, and not many other tools are available to look at the function of the organs.