The final diagnosis is bronchitis. I don't know what they saw or thought they saw on the x-ray to lead to the possibility of a PE, but the ct scan showed that there wasn't one. So, he has been prescribed some abx, and a cough suppressant.
By the way, it is pouring again.
I figure we will get back home between 10 and noon. Thick fog and heavy rain and up all night.
My final diagnosis of the VA. Friendly. Clean. Quick with tests and labs. Very old, but head and shoulders above Indianapolis.