Pediatric Radiology also has a fair amount of patient interaction compared with other subspecialties of radiology. Also, I think it has more interaction with clinicians....but that may just be my experience. Agree with other posters. IR and Mammo have lots of patient interaction.
You can sort of have as much or as little patient interaction as you want in radiology. When I was on call overnight in the reading room, I would often go into the ER to talk to patients, do a quick focused exam, etc.....the clinical history we get from the Emergency Department is about as useful as a single piece of toilet paper....stuff like "R/O Pathology" or "R/O Mass/Abscess/Malignancy" really pisses me off.
I would just introduce myself to the patient...."I am Dr. ________, your radiologist. What brought you into the Emergency Department tonight?"