Abstract Objective Much has been discussed about gender diversity in all professional fields, particularly in medicine. Recent studies showing that there are fewer than ten female professionals in interventional neuroradiology (INR) in a continental country like Brazil, and less than thirty in all of Latin America, have prompted an investigation into the causes of the low numbers of women choosing to follow this medical specialty. This project intended to reveal the reasons through an anonymous form applied to women in the final year of the three medical residencies considered prerequisites for INR in Brazil: neurology, radiology and neurosurgery. Materials and Methods The questionnaire addressed to each of the three fields contemplated the professionals' preference to follow their respective subspecialties, in addition to common considerations that could be deemed barriers to INR. Results Surprisingly, the weak link in the chain was demonstrated to be radiology, which is the exclusive prerequisite residency for training in INR in many countries. However, in Brazil, most doctors who graduate in INR come from Neurosurgery and, secondly, from neurology. These two specialties together account for less than half of the female residents compared to radiology alone. Conclusion All of the following items were already expected: difficulty in reconciling a double shift; employment opportunity; long training time; the lack of female leaders inspiring new generations of doctors; issues involving radiation and motherhood; and still the barriers of misogyny and machismo. But specific studies need to be conducted to find out why very few radiology residents follow INR training in Brazil.