Thank you for that question. It's a good point.
Feather had a hand-held ultrasound. As I mentioned, that kind of ultrasound really depends on the skills and the experience of the operator, and there's no human being who can take 300 images with every millimetre of the breast. That's what automated breast ultrasound does. We see some patients who have had their ultrasound done in regular medical facilities, and when they come for an automated breast ultrasound, we diagnose lesions. That's the difference between two tests.