Why Is There a Radiologist Shortage If the Number of Radiologists Is Growing?

The number of radiologists is growing. So why does it still feel like there are not enough radiologists?
Across healthcare systems, radiology departments continue to report growing workloads, longer turnaround times, difficulty accessing subspecialty expertise, and pressure on individual radiologists. At the same time, the radiologist workforce itself is not necessarily shrinking.
The answer is that a radiologist shortage is not simply a headcount problem.
Radiology demand is growing, workforce growth does not always keep pace with imaging volumes, and the available workforce is unevenly distributed across specialties, locations, and practice settings. Attrition also affects some groups of radiologists more than others.
In other words, having more radiologists does not automatically mean having enough radiology capacity.

Radiology demand is growing faster than the workforce

The most straightforward explanation for the radiologist shortage is that the number of imaging studies continues to increase.
CT and MRI are now central to cancer care, emergency medicine, neurology, cardiology, orthopedics, and many other areas of healthcare. As populations age and the use of advanced imaging expands, radiologists are expected to interpret more studies.
The Royal College of Radiologists’ 2025 Clinical Radiology Workforce Census found that demand for complex imaging in the UK was growing by 9% between 2024 and 2025, compared with 4.3% growth in the clinical radiology workforce. The same census reported a 32% shortfall of clinical radiologists across the UK. The gap is not unique to the UK.

In the United States, research from the Harvey L. Neiman Health Policy Institute has found that if current attrition levels continue, the radiologist workforce could grow by 20.9% by 2055. That sounds substantial, but projected imaging growth over the same period ranges from 17% for MRI to 25% for CT.
So even when the number of radiologists increases, the amount of imaging they need to interpret can increase just as quickly or faster.

More radiologists does not necessarily mean more available capacity

Consider two radiology departments with 100 radiologists each.
One may have enough neuroradiologists, MSK radiologists, and pediatric radiologists to meet local demand. The other may have a surplus in some areas but significant gaps in others.
Both departments have the same headcount. Their actual diagnostic capacity can still be very different.
This is one reason why looking only at the total number of radiologists can make the workforce problem appear simpler than it really is.

The radiologist workforce is not evenly distributed

A national shortage number can hide large differences between hospitals and regions.
The latest RCR workforce census found a 43% radiologist shortfall in small acute hospitals, compared with 30% in large teaching hospitals. Regional differences in England are also substantial: the reported shortfall ranges from 22% in London to 43% in the North East.
That means a radiologist shortage can look very different depending on where you work.
A large academic medical center may have access to a broad range of subspecialists, while a smaller or rural hospital may struggle to recruit and retain even a small number of radiologists.
The result is an uneven distribution of expertise. And this matters because not every radiology study requires the same type of expertise.

General radiologists and subspecialists face different workforce pressures

Radiology has become increasingly subspecialized.
Many radiologists now focus much of their practice on areas such as neuroradiology, musculoskeletal imaging, breast imaging, abdominal imaging, cardiac imaging, pediatric radiology, interventional radiology.
Subspecialization can improve access to expertise for complex cases, but it also creates a more specific workforce problem.
A hospital may have enough radiologists overall while still having difficulty accessing the right subspecialist.
The latest ACR/Harvey L. Neiman Health Policy Institute workforce analysis highlights another important issue: radiologist attrition is not the same across the profession.

U.S. radiologist attrition more than doubled between 2014 and 2022, increasing from 1.1% to 2.5% annually. The difference was particularly notable between generalists and subspecialists: subspecialist radiologists were 37% more likely to leave the workforce than generalists.
The same research found that the number of pediatric radiologists in the U.S. actually declined from 2,190 in 2016 to 2,032 in 2023, even while the overall radiologist workforce grew. Pediatric radiologists also represented a smaller share of the total workforce, falling from 6.4% to 4.6%.
This illustrates an important point: A growing radiologist workforce does not mean every area of radiology is growing at the same rate.

Geographic location can be part of the shortage

Radiologists are also not distributed evenly geographically.
The RCR’s latest data show that smaller hospitals and some regions experience substantially larger workforce gaps than major teaching centers.
This creates a practical problem. A patient may have access to imaging locally but not to the subspecialty expertise needed to interpret a complex examination quickly.
Teleradiology can help connect hospitals with radiologists outside their immediate location, but geographic access is only part of the challenge. Licensing, credentialing, clinical context, reporting responsibility, and workflow integration can all affect how effectively remote expertise can be used.
The goal is therefore not simply to move images from one location to another.
It is to make the appropriate expertise accessible when it is needed.

Radiologist attrition makes the shortage harder to solve

Training more radiologists is an important part of addressing the workforce shortage. But training takes years.
At the same time, radiology departments are trying to retain experienced physicians who are already in practice.
The ACR’s 2026 workforce analysis found that U.S. radiologist attrition increased from 1.1% in 2014 to 2.5% in 2022. It also found higher attrition among subspecialists and radiologists working in practices with rural sites.
This creates a difficult cycle:
More imaging → higher workload → greater pressure on radiologists → workforce attrition → fewer available radiologists → even greater pressure on those who remain.
The problem is therefore not solved simply by increasing the number of residency positions.
New trainees eventually add capacity, but they cannot immediately fill today’s gaps.

Can radiology use its existing workforce more effectively?

Increasing the number of radiologists is necessary. But workforce growth is only one part of the equation.
Another question is how effectively existing radiologists are being used.
The ACR’s 2026 workforce economics report describes a large radiology group that had chronic subspecialty backlogs in some areas while other parts of the practice had unused capacity. By introducing centralized scheduling and subspecialty pools, the practice reported approximately 10% additional capacity without increasing headcount.
This does not mean that workflow redesign can replace the need for more radiologists.
It shows something different: the same number of radiologists can provide different levels of effective capacity depending on how work is distributed. That distinction becomes increasingly important as imaging volumes continue to grow.

Better case assignment can reduce unnecessary interruptions

Radiologists also lose time when work is poorly coordinated.
A complex case may require a subspecialist. An urgent study may need to be moved ahead of a routine case. A radiologist may need to stop reading to answer a clinical question, find prior imaging, or help with a case outside their primary area.
These interruptions may seem small individually, but they accumulate across a working day. Research also shows that better assignment of studies can have measurable effects.

A two-year cohort study at a tertiary cancer center examined an automated system that prioritized and assigned CT examinations to available radiologists. After implementation, the number of daily urgent radiology report requests fell from 25 to 10, a 60% reduction, even as CT volume increased by 9%.
The study does not show that automation can solve the radiologist shortage.
It shows that better organization of existing work can reduce some of the pressure created by high imaging volumes.
What does the radiologist shortage actually mean?

The phrase “radiologist shortage” makes the problem sound like a simple equation:
Not enough radiologists → train more radiologists.
More radiologists are certainly needed in many healthcare systems. But the reality is more complicated.
The workforce is growing while imaging volumes are also growing. Radiologists are distributed unevenly across regions and practice settings. Subspecialty expertise is not evenly available. Some subspecialties are experiencing higher attrition than others. And the way imaging studies are assigned can determine whether available expertise is used efficiently. The result is that headcount and diagnostic capacity are not the same thing.

A healthcare system can have more radiologists than it had five or ten years ago and still experience a radiologist shortage.
The long-term solution will likely require several things at once: training more radiologists, improving retention, addressing geographic and subspecialty gaps, and making better use of the expertise that already exists.
For radiologists, that means the future of the workforce is not only about adding more people.
It is also about making sure the right expertise reaches the right study at the right time.