The only time my doctor has performed an US on me rather than the tech was during labor with DS and she knew specifically what she was looking for, not checking for any abnormalities in the baby but rather looking at where my placenta had already torn to see that it was reattatched (it had happened 22 weeks earlier, but wanted to be safe)
That, I trusted her to do.
To check my babys heart for defects, not so much. I much more trust a sonographer who does this day in and day out and will be MUCH more likely to quickly spot something small that requires emergency attention after birth just as much as something large that is probably harmless.
Artist, photographer, stay-at-home-mom and Marine wife. Mom to 4; a boy and three little girls.