detection but we can also do it using a linear geometry so this is a hand hold ultrasound probe that you might have seen the hospital we have like hundreds of ultrasound detectors along this probe we use optical fibers optical fiber bundles to deliver light with a single laser shot we can illuminate a volume below this linear probe it allows us to form a two-dimensional image so all the data will be acquired within say 100 microseconds so your boy motion artifacts when you acquire this type of images and you can