Becoming a radiologist takes a minimum of 13 years after high school: four years of undergraduate education, four years of medical school, one year of internship, and four years of radiology residency. If you pursue a subspecialty like interventional radiology, add one to two more years. It’s one of the longer training paths in medicine, but it leads to a well-compensated career with a median salary of $239,200 as of 2024.
Undergraduate Education
You don’t need a specific major to get into medical school, but most aspiring radiologists follow a pre-medical track heavy in biology, chemistry, physics, and mathematics. These courses satisfy the prerequisites that virtually every medical school requires. Many students major in biology or biochemistry, though some choose unrelated fields like engineering or economics and simply complete the prerequisite science courses on the side.
Your undergraduate GPA, especially in the sciences, matters enormously for medical school admissions. So does the MCAT, the standardized exam you’ll take during your junior or senior year. Strong clinical volunteering, research experience, and letters of recommendation from science faculty round out a competitive application. Plan to spend about a year on the application cycle itself, since most students apply in the summer before their senior year and don’t start medical school until the following fall.
Medical School: Four Years
Medical school lasts four years and results in either an MD (Doctor of Medicine) or a DO (Doctor of Osteopathic Medicine) degree. Both paths qualify you for radiology residency. The first two years focus on classroom and lab-based learning in anatomy, physiology, pharmacology, and pathology. The final two years shift to clinical rotations in hospitals and clinics, where you cycle through surgery, internal medicine, pediatrics, psychiatry, and other specialties.
Radiology isn’t always offered as a required rotation, so you may need to arrange an elective rotation to get exposure. Doing so is important: it helps you confirm your interest, build relationships with radiology faculty who can write recommendation letters, and strengthen your residency application. During your fourth year, you’ll apply to residency programs through the National Resident Matching Program, commonly called “the Match.” Radiology is a competitive specialty, so strong board scores on the USMLE (for MD students) or COMLEX (for DO students) are essential.
Residency Training
After medical school, you enter graduate medical education. Every radiology path begins with a one-year internship, formally called a transitional year or preliminary year, in a non-radiology clinical setting. This internship builds foundational patient care skills before you specialize.
From there, your path depends on which branch of radiology you pursue.
Diagnostic Radiology
A diagnostic radiology residency is four years long, making your total postgraduate training five years (including the internship). During residency, you learn to interpret imaging studies: X-rays, CT scans, MRIs, ultrasounds, mammograms, and nuclear medicine scans. You rotate through subspecialty areas like neuroradiology, musculoskeletal imaging, chest imaging, and pediatric radiology. After completing 36 months of residency, you’re eligible to sit for the American Board of Radiology’s Qualifying (Core) Exam, the first of two board certification exams.
Interventional Radiology
Interventional radiologists perform minimally invasive, image-guided procedures like placing stents, treating tumors with targeted radiation, and opening blocked blood vessels. There are multiple pathways into this subspecialty:
- Integrated IR residency: A six-year program (including the internship year) open to medical school graduates applying through the Match. The first three years concentrate on diagnostic radiology, and the final two years focus on interventional training.
- Independent IR residency: A two-year program available only to graduates of a diagnostic radiology residency, bringing the total postgraduate training to seven years.
- Independent IR with early specialization (ESIR): If your diagnostic radiology program offers an ESIR track, you complete at least 12 IR-related rotations and 500 image-guided procedures during residency. This can shorten the independent IR residency from two years to one, totaling six years of postgraduate training.
Fellowship Options
After finishing a diagnostic radiology residency, many radiologists complete an additional one- to two-year fellowship in a subspecialty. Common fellowship areas include neuroradiology, breast imaging, pediatric radiology, musculoskeletal radiology, abdominal imaging, cardiothoracic radiology, and nuclear medicine. Fellowships aren’t strictly required to practice, but they make you more competitive for academic positions and jobs at large hospital systems that want subspecialty expertise.
Board Certification and Licensing
The American Board of Radiology (ABR) administers the certification exams for both diagnostic and interventional radiology. For diagnostic radiology, the process has two parts:
- Qualifying (Core) Exam: Taken after 36 months of residency. The ABR offers it twice a year, typically in late spring and November.
- Certifying Exam: A computer-based exam you can take at least 15 months after completing residency and passing the Core Exam. Starting after 2027, ABR candidates will be required to take a new oral exam format for this step.
You also need a state medical license to practice. Each state has its own licensing board, but the general requirements are the same: an MD or DO degree, completion of graduate medical training, and passing scores on the USMLE or COMLEX exams. Most radiologists obtain their license during residency.
Total Timeline at a Glance
Here’s how the years add up from the start of college:
- Undergraduate degree: 4 years
- Medical school: 4 years
- Internship year: 1 year
- Diagnostic radiology residency: 4 years
- Optional fellowship or IR training: 1 to 2 additional years
A diagnostic radiologist who skips fellowship finishes training about 13 years after starting college. An interventional radiologist finishing the integrated pathway is done in 14 years. Those who complete a diagnostic residency and then add an independent IR residency are looking at 15 years total.
Salary and Career Prospects
Radiology is one of the highest-paying medical specialties. The median salary for radiologists was $239,200 in 2024, with the bottom 25% earning around $204,330. Interventional radiologists and those with subspecialty fellowship training often earn above the median, particularly in private practice settings. Compensation varies by geographic area, practice type (academic vs. private), and years of experience.
Demand for radiologists remains strong. Imaging volume continues to grow as diagnostic technology advances and the population ages. Radiologists work in hospitals, outpatient imaging centers, academic medical centers, and teleradiology companies that allow them to read scans remotely. The specialty offers more predictable hours than many surgical fields, though on-call shifts for emergency imaging are part of the job at most practices.
What Makes a Competitive Applicant
Radiology residency spots are sought after, so building a strong application during medical school matters. Programs look for high USMLE/COMLEX scores, strong clinical evaluations, research publications (radiology-related research is a plus but not mandatory), and meaningful letters of recommendation from radiologists. Away rotations at programs you’re interested in can also strengthen your candidacy, since they give program directors a chance to evaluate you in person over several weeks.
The field rewards strong visual-spatial skills, comfort with technology, and an analytical mindset. Day-to-day work involves pattern recognition across thousands of images, so attention to detail is critical. If you enjoy the idea of solving diagnostic puzzles and working with advanced imaging technology rather than spending most of your time in direct patient encounters, radiology is worth pursuing.