Coffeegirl,I took myself off to my only MRI knowing what my diagnosis would be. The time I had alone after the words were out there was good for me and allowed me to collect myself before coming home (and opening the wine).
I'm glad Himself didn't come and it wouldn't bother me if he never came with. Personally, I feel that my problems are mine and I don't share much with him.
If I need to lie down, I find alone time. When he's around I try my best to be 'normal'. It's not like I hide stuff, but I don't talk about it. I really try not to harp on about this and that. I want to remain his partner; not become a list of issues.
I feel he's under a lot of pressure to provide for me though it's true what he says, he'd have to work anyway, and the 'burden' of me not working doesn't really affect him.

I think men deal with stuff differently. Fear, anger, denial, bargaining and acceptance happens to everyone around the diagnosed person too. It's not all about me.

If you're able to hold your head high, overcome the vertigo, be strong, make arrangements, carry off the MRI as if it's no biggie, come home 'happy' and cope with it all, perhaps your husband will 'see' you differently, as being able to cope, the pressure lifts off him and suddenly he'll want to know little bits and pieces, in his own time.
Be yourself, be strong, but don't be a MonSter victim. You're bigger than the elephant in the room.
He'll come round...