right now the the technology allows us to get a ring array or 1d array at a reasonable price but a two-dimensional array is I know quite expensive in fact the ultrasound world has been working on that for quite some time and they're talking about one happy in other words one dimensional density is high the second dimensional density is much lower because you simply cannot have that many transducers ultrasound transducers and still maintain the cost yeah please mm-hmm so I I was trained in laser physics so I got my PhD from rice and I my PhD thesis