Professor Doherty?

I got an email at work today, from organisers of a conference in Milano that I'm going to next week (yes, I have scheduled a day's shopping at the end!), which began "dear Professor Doherty". Naturally, I corrected the mistake. The next email I received was addressed to "Dr Doherty". It seems that in the field I work in, it is inconceivable to be a lowly old Ms. It's OK, though. I'm getting used to being the least educated person in the building!