It's damn close, anyhow. I think it may be altered a little, but it's damn close.
As for WHY anyone would want to do this, well, it makes a great feel-good story. It would have been better if the person altering it would have been a little more knowledgeable with what they were doing. Size and angle, use a real hand, you know, those kind of things. I'm not saying I could have done a better job, god knows I can't, but i've seen lots of clip art in my day, I've been around long enough to have been using photo editing software (amateurly for my own little things here and there) to know what CAN be done. Not to mention that I've seen ultrasound images before and the proportion is way off for the size of hand.