Yes. R.J., we've gotten really good feedback. I think what we see is that when we approach a hospital, we talk about building a program. So a program is not unique to necessarily one urologist. We -- I think today, we do a much better job of socializing what the value of adding a Focal One Robotic HIFU program can mean to a hospital. So with that said, I think we have more interest in neurologists being trained in use of that technology.
So in our existing installed base, once the system is placed, we launch our program, and we may train other urologists, and we're ready to do that, usually, there's a plan, a step-up plan. And so, I would say that we are active supporting our hospitals, amongst our clinical team to execute on that plan.
I think as I mentioned, if you think of HIFU, it's used in primary treatment, which is a large audience of patients, there's a lot of opportunity out there. So I think we're very early in this adoption curve that is even with hospitals that provide HIFU today.
So the hospitals that have had their system for a while tend to get busier in most cases, as you would expect, they're using machine more frequently. Or in the case of expanded indications, like I had mentioned, the new guideline change for salvage use of a HIFU, for salvage [indiscernible] radiotherapy, that can be a new market segment for hospitals to consider.
As we know there's radiation failures out there and patients need to have all options presented to them. So I think we're just in the beginning of seeing trends and be able to see growth, as more hospitals use the technology, maybe use it on a more frequent basis as noted, or even train new urologists who have strong interest of learning use of Focal One HIFU. So again, I think we have a lot more to do in terms of growth, and we're very early in the adoption of this market.