Re: Ultrasound tech's reaction
It is impossible to know, there could be many reasons. I would not drive myself crazy trying to guess what the reason is.
Have you had the official reading explained to you by your doctor yet? If not, please be patient and keep your mind off it until you do.
Medical machinery is constantly being updated, new technology, and new software are always being introduced on the job, so there are always questions that often do not have to do with the actual test itself.