One aspect of voice evaluation and therapy that I've been a little leery of, though, is scoping (or videostroboscopy). Basically, that's where the speech pathologist inserts a long metal rod with a light and camera on the end (rigid scope) through the patient's mouth to the back of their throat (without making them gag) to get a look at their vocal folds ("voice box") in action.
(See that metal rod in her hand? That's the camera. See the expression on that old guy's face? That's about how most people feel when they find out that thing's going to be getting acquainted with the back of their throat.)
(View of normal vocal folds (they're the whitish V-shaped things) from a videostroboscopy)
I've tried scoping people a few times before, and it's not easy: even if they don't gag, it's still hard to get a good view of the folds. But today, I did it. Grabbed the tongue, slipped the scope in her mouth, and all of a sudden a great shot of her larynx was on my screen. I got so excited that I totally forgot what to do next. It was fantastic.
Next on the list: learn how to insert a flexible scope (same idea, but this one goes up the nose). Woot!