If you are on the fence between IR and DR and not 100 percent committed to IR and potentially pursuing a 100 percent IR practice, I would agree that perhaps applying to a radiology program with ESIR would be best as you have some time to consider your options. Many students come into radiology thinking that IR is for them but have limited exposure in medical school. The majority will see the great difference in lifestyles and many will decide that they would rather have the imaging lifestyle as opposed to a more surgical lifestyle. In these situations, I wonder if there will be some degree of attrition from the IR group similar to what happens in surgery. It is similar to the surgical mantra, if you can find anything else you would be happy doing you should pursue that and that includes IR vs DR. There are several radiology subspecialties that do procedures and have some patient contact without the emergencies that IR has (mammography, musculoskeletal procedure, abdominal imaging , neuroradiology et).
The IR call has become increasingly busy due to the numerous acute conditions we are asked to see from septic patients with cholecystitis or hydronephrosis to bleeding patients (epistaxis, hemoptysis, hematemesis, rectal bleeding, post biopsy, post surgical bleeding , stroke,PE, DVT, post partum bleeding, trauma). The frequency of call coverage can vary based on group and number of hospitals that you are asked to cover, but it can be as frequent as Q2 or Q3. Students who are considering interventional radiology should experience a busy IR rotation and take some night call to experience what the lifestyle is like. They should go to IR clinic, see inpatient consults , round on patients and perform procedures. If you are only in the OR environment as a passive observer, you will not get a true glimpse of what the IR lifestyle is becoming. If there is any doubt of what you want, it is better to go the radiology route with the potential to go ESIR.
Currently many of the radiology groups hire IR physicians primarily to fulfill the hospital contract and see IR physicians as a source of revenue loss as this is based on professional fees. The imagers can read at such break neck speeds that an IR physician doing procedures, doing consults and seeing patients in clinic could never compete. Clinics and consultative practices require significant overhead that is part of the cost of doing business, but radiology groups are not used to having much overhead. To develop a lucrative outpatient IR practice can take 3 to 5 years and often can be in the red for those years. Most radiology groups are not supportive of losing money as they historically have never had to wait for a return on investment.
I do think that pharmacotherapy is an important adjunct and that we as physicians (cardiologists, surgeons, interventional radiologists) involved in the care of certain patient populations should provide that care, otherwise they should consider not performing such procedures. For example a claudicant with Peripheral arterial disease should first go through an exercise regimen, potentially be on cilostazol and be put on a high intensity statin therapy (atorvastatin 40/80 mg) or rosuvastatin 20/40 mg and consideration for an ace-inhibitor 5/10 mg lisinopril and certainly counseled to stop smoking. I have seen too many patients referred to me by primary care or specialists for peripheral arterial disease who are under treated in terms of pharmacotherapy and there is clear evidence of the benefits of these medications and algorithms. So, I think it is our responsibility as health care providers to have an understanding of the conditions that we treat and offer that. Many of the older trials have showcased the under diagnosis of PAD (PARTNER) as well as the under treatment of PAD patients to reduce cardiovascular and cerebrovascular events.