Well I would say that you really don't know until you actually do a radiology rotation and are sitting in front of the computer interpreting exams. To be honest, the reasons you state for radiology are superficial, and really indicative that you have not had any real radiology experience yet. I think liking images, interpretation, and technology is really too general and applies to many other fields of medicine. Here are the characteristics that I really found make a radiologist, after being in the thick of things:
1) Enjoys the consultant role - this is a must, as you are at the whim of clinicians. Despite what others think or say, a radiologist plays a very different role than most clinicians, and is a consulting service at the core. You will constantly have to please clinicians, showing that you add value, as your income is solely reliant on referrals. So do you like making decisions or do you want the problem to come to you? For instance, you will never be able to say, hey this guy needs a lung biopsy lets do it, but rather it will always be up to the clinician.
2) Enjoys multiple specialties - most of the happy radiologists i've seen really enjoy thinking about all types of specialties, that is, like that they can do an OB ultrasound one minute, and then read out a head CT the next.
3) Enjoys long differentials - this is a must. I find that the best radiologists really enjoy coming up with everything under the sun that this finding might be, and talking about the clinical possibilities. This means even all those rare diagnoses that seem like such a pain to remember in med school. Because in the end, there is no enjoyment in interpreting negative studies, and in positive ones, you have to come up with differentials the clinician hasn't already thought of, or you add no value.
4) Enjoys anatomy - this should be obvious why
5) Enjoys the lifestyle - this one is a caveat, because lifestyle isn't what it used to be. If you do a search on radiology work hours, they work on average 58 hours/wk which is on par with most competitive specialties (cards, GI, ortho). But most radiologists I see get out by 5-6 pm so if this is important for you, kudos. But otherwise, fields like derm or FM have better hours.
6) Dislikes social contact with patients - almost all radiologists I have met, one unifying theme is that they really dislike patient care. Usually this is because of their personalities. However, disliking patient care is compatible with pathology and i would say surgery too in some sense, so this is not necessarily unique to radiology.
There are other reasons, but i think these are the core qualities. As a disclaimer, I must say that after doing radiology for 2 months, I have decided to pursue cardiology instead, because many of the qualities above do not fit my personality. In cards, you get to do a lot of imaging, a lot of interventional work, and at the same time control the patient and make all the decisions. Anyways, that's just my little plug, but both are great fields.