Hi Jill,on a positive note I am pleased to say the Scan didn't find anything sinister.
However I can still hear the pulse in my ear, not as bad as it used to be due to the fact I am getting used to it plus it genuinely appears fainter (doesn't affect my sleep anymore as I sleep opposite side with a fan on to give a little background noise. It did affect my hearing test slightly in the offending ear but I was within limits.
It seems worse after night flights, long days, hangovers etc so it could be stress related or connected to BP I suppose, anyway thanks for your concern,take care,Pudd.