see this is actually a standard ultrasound machine we worked in cooperation with Philips to modify this clinic ultrasound system for concurrent photoacoustic imaging yogic dual contrasts for the acoustic contrast in ultrasonic contrast so this system works around this point allows you to penetrate multiple centimeters and get hundreds of microns resolution this is a one example where we can see a tiny absorber buried at a depth of five centimeters right this was not possible using standard optical imaging right at