Go through middle entrance carrying type of scan for clinician (6)
I believe the answer is:
doctor
'type of scan for clinician' is the definition.
I can't judge whether this defines the answer.
'go through middle entrance carrying' is the wordplay.
'go through middle' becomes 'ct' (I am not sure about this - if you are sure you should believe this answer much more).
'entrance' becomes 'door' (door is a kind of entrance).
'carrying' means one lot of letters goes inside another.
'ct' inserted into 'door' is 'DOCTOR'.
Can you help me to learn more?
(Other definitions for doctor that I've seen before include "Medical worker or holder of highest university degree" , "Falsify; quack" , "Tamper with - falsify - one of the 14 films" , "Medic or holder of highest university degree" , "Medical professional or university don" .)