I am biased.
But, I find radiology to be a very fascinating field and fun! While other docs/ms may look at me funny, I love this field, even with the lack of patient contact. I do not believe the loss of patient contact will make me unhappy. Will it make you unhappy. I do not know. This is something you must decide for yourself. I find it tremendously exciting and intellectual. It provides me opportunities to use my head (know anatomy in 2D/3D, pathophysiology, pathology), but also my hands as well. Reading scans does not get boring but you must realize that at least 50-80% of the scans you read will not show pathology (ie Normal/Negative). Having said that, the pathology will be diverse from almost every field of medicine. You will see some strange and fascinating pathology, but just not all the time. You will see more pathology than the average office based primary care doctor on a daily basis. You are getting all of their combined pathology (that can be imaged).
Do you love/like new technology? Are you a technogeek (I am, but never forget to be an advocate for referred patients!). Radiology is continuing to push the envelope for new diagnosis and treatment options. Read today's New England Journal Article about the use of MRI coronary angiography. You can kiss diagnostic coronary angiograms (performed by cardiologists) good-bye within 5 years in most applications. This is one example of the hugh advances being made in this field.
If you cannot imagine living without patient contact, you should consider interventional radiology (IR) or some other field. As an IR doc you probably will be expected to read films as well (not all places, but a majority). Patient contact usual comes from 1) IR procedures including biopsies and drainages which body imagers do as well as the IR docs 2) consenting the patient (more done as a resident) for contrast injection.
Do you love to learn and want to keep up with monthly improvements in broad field of radiology? You will have to continuously keep up with the advances in radiology. This will mean reading 3-4 hours a night for your entire residency as well as lots of self-learning post residency. Maybe less if you are a genius, but for the rest of us, that means steady reading! You cannot be spoon-fed or learn on the job all that is needed to pass the boards (one of the hardest out there) or be a great diagnostic radiologist.
Are you comfortable with the fact that you will not have your own patients, nor admitting privledges (unless you do IR)? You are not commander of the ship. Your role in medicine is a that of consultant without their own patients. You need to be able to live with that and all the customer service skills it takes to be a great radiologist. You need people skills when dealing with other clinicians. Many are not up to date with all the latest/most appropriate studies for their particular patient. How will you handle this?
Most lay people will not truly understand your role in medicine. So when most people ask you what field you are going into, they will give you a blank look when you tell them radiology. Little do they know the central role your input will play in their healthcare in case they ever get "really sick". It has a low prestige in the community outside of the medical profession. Some in medicine may view you as "not a real doctor." But the smart ones will call on you to help them figure things out or confirm their suspicions, even the ones who think we are not real doctors.
Right now I see a threat to the practice of radiology as I know it because there are not enough new radiologists being trained. Can you handle a future with more work including weekends, less vacation time, 24/7 coverage of radiology services and busy call?
This also means other specialists are looking to do some of the more lucrative studies themselves. You cannot self-refer patients. This is a good thing for cost containment and appropriate studies being done. However, as more specialists perform their own imaging procedures, what will be left for the radiologist? The chest xrays and barium enemas? There is a growing trend of non-radiologists performing the high-end MRI and CT procedures to bolster their income. Will you be prepared/want to wage this battle by doing what it takes to make referring physicians happy and not letting them muscle in on radiology's territory?
There will be a battle (roy-al) with the cardiologists as cardiac MRI angiography replaces coronary angiograms and cardiologists source of $. Cardiac MRI angiography is cheaper ($1K vs 5K) than coronary angiograms and it is much LESS INVASIVE. These Cardiac MRI services will need to be 24/7 in the ED. Guess what? Call will be busier than usual. Assuming we can actually hold on to our technologic advances.
Are you (not you specifically) a whiner, who does not want to work, but collect a high pay check. If so, please do us a favor, do not go into radiology. Find another field, please! You will be dissappointed as radiology turns into one of the hardest working fields in medicine. I know of radiologists that work from 7am-8pm M-F and 1 in 4 weekends and nights on call.
Let me say one final thought. Leave your mind open to other fields. I discovered radiology as 1st year medical student and my advisor/mentor is a radiologist. He and I both agreed that I should keep "an open mind." As you finish your third year clerkships, you may find one of those fields fascinating. Also, if you have time get exposure to fields that you probably will not do third year. These include (depending on your school): opthomology, neurosurgery/neurology, orthopaedics, pathology, dermatology, radiation oncology, urology, anesthesiology, ENT, plastic surgery, Physical Medicine and Rehab (PMR), ER.
(If you want to see all these fields in one way or another you probably will see them in radiology).