Hiya,
Not too scary, it's the same sort of ultrasound thingy that they give pregnant women, well obviously they use the scanner thing a bit further up, around the heart area actually, called an echo-cardiagram, they use loads of that gunky cold gell stuff. They are being pretty thorough, hope I don't have to wait too long for the results.
Glad you liked the movie lucy
Cheers
Leigh