I like some advice and an opinion please

my father is in Bedford hospital and he has now been waiting for 2 inpatient scans, I believe ct is one and a urology camera is the other, for 2 day and is getting anxious to have them and wants to go home. he would be released from hospital, if the scans show it is all ok.
how long should it normally take for inpatient scans to happen? do they normally not get prioritised? do they not want to free up beds like his, if there is no reason to keep him in?