During my ultrasound, my sweater was quite wet from the gel. I mentioned it to the tech and he responded that, "Gravity caused the gel to slide when we had you turn onto your left side."  I mentioned that a better job of tucking the towel under the entire sweater would have been helpful or asking me to tuck the towel any place I felt was not covered. To which he responded, that my sweater would dry.  That was completely beside the point and appeared dismissive of the concern that I addressed. 
SHR Ultrasnd