What Department Performs an Echocardiogram?

Echocardiograms are performed primarily by the cardiology department, typically in a dedicated echocardiography laboratory staffed by trained cardiac sonographers and supervised by cardiologists. That said, the test has spread well beyond the walls of a single department. Emergency physicians, intensivists, anesthesiologists, and maternal-fetal medicine specialists all perform versions of the exam in their own settings, and your primary care doctor is often the one who orders it in the first place.

The Cardiology Echocardiography Laboratory

Most hospitals and large cardiology practices maintain a dedicated echo lab. This is the home base for the standard transthoracic echocardiogram, the version where a sonographer presses a probe against your chest to capture moving images of your heart. The lab is staffed by cardiac sonographers who acquire the images and cardiologists who interpret and sign off on the final report. In pediatric hospitals, a parallel setup exists within pediatric cardiology, with its own dedicated sonographers and equipment tuned for smaller patients.

These labs are designed for efficiency. A quality improvement project at one pediatric echocardiography laboratory showed that straightforward workflow changes could produce meaningful improvements in turnaround and clinical relevance without adding staff or technology.¹ The shift from paper-based reporting to digital structured reports has compressed the time between image acquisition and a final report reaching the referring physician from a median of nearly 24 hours down to about an hour.² That speed matters when decisions about heart failure management or surgical timing hinge on what the echo shows.

Who Orders the Test vs. Who Performs It

There is an important distinction between who requests an echocardiogram and who actually carries it out. In many cases, your primary care physician is the one writing the order. A study of Medicare beneficiaries found that while cardiologists were the most common providers of echocardiographic services, primary care physicians ordered the majority of the diagnostic procedures.³ Your family doctor might hear a murmur, notice symptoms of heart failure, or want to check on a known valve problem, and they will send you to the cardiology echo lab for the actual scan.

In pediatric settings, the ordering patterns look different. One study of outpatient pediatric echocardiograms found that pediatric cardiologists themselves ordered about 81% of studies, with noncardiologist subspecialists ordering 13% and primary care providers only about 5%.⁴ The same study found that appropriateness varied among these groups. Noncardiologist subspecialists actually had the highest proportion of appropriately indicated studies and the highest yield of abnormal findings, while primary care providers had the highest percentage of studies classified as rarely appropriate. This does not mean primary care doctors order bad tests; it means the referral pathway matters, and seeing a specialist before the echo often sharpens the clinical question.

Point-of-Care Echo in the Emergency Department and ICU

If you arrive at an emergency department with chest pain, shortness of breath, or signs of shock, you may get an echocardiogram right at your bedside performed by an emergency physician or intensivist rather than a cardiologist. Point-of-care cardiac ultrasound by non-cardiologists in acute care settings like the ED and ICU has become very common.⁵ These exams tend to be more focused than what you would get in a formal echo lab. The physician is looking for a handful of urgent answers: Is the heart squeezing well? Is there fluid around the heart? Is the right side of the heart strained, suggesting a pulmonary embolism?

Point-of-care ultrasound, often abbreviated POCUS, is now used across emergency departments, hospital wards, and pre- and post-anesthesia care areas to provide real-time information for rapid diagnosis and to assess whether treatments are working in patients with life-threatening conditions.⁶ Many medical schools in Europe and the United States are now incorporating ultrasonography into their core curricula, though standardized training programs for minimum competency are still being developed.⁷

The key difference for you as a patient: a formal echocardiogram ordered by cardiology is comprehensive, with dozens of measurements and a detailed written report. A bedside POCUS exam in the ED is a targeted, rapid assessment. Both involve the same basic technology, but the scope, documentation, and depth differ substantially. If the bedside exam raises concerns, you will likely get a full study from the cardiology echo lab as a follow-up.

Transesophageal Echocardiography and Who Performs It

Not all echocardiograms go through the chest wall. A transesophageal echocardiogram, or TEE, involves passing a specialized probe down the esophagus to get images from behind the heart. This approach provides much sharper views of certain structures, particularly the heart valves and the left atrial appendage, a common site for blood clots.

TEE has traditionally been the domain of cardiologists and cardiac anesthesiologists. In the operating room during heart surgery, the anesthesiologist typically handles the TEE probe to monitor heart function in real time. But this procedure has increasingly moved into the ICU as well. A five-year study at a single center found that intensivists performed 92% of ICU-based TEEs, with emergency physicians performing about 9%, and roughly 2% were done in prehospital settings.⁸ A separate academic program documented 274 TEE studies performed by 38 different critical care operators, reinforcing that this technique is no longer confined to the cardiac catheterization lab or the operating room.⁹

So if you or a family member needs a TEE, the department performing it depends entirely on the clinical context. Elective outpatient TEEs are usually done in the cardiology echo lab. Intraoperative TEEs are handled by cardiac anesthesiologists. And in the ICU, a critical care physician may perform one at the bedside when a patient is too unstable to transport.

Pediatric and Fetal Echocardiography

Children with suspected heart problems are typically seen within a pediatric cardiology division, which runs its own echo lab. The equipment and techniques are similar to adult echocardiography, but the interpretive expertise differs. Congenital heart defects involve a vast and complex array of structural variations that most adult cardiologists rarely encounter.

Fetal echocardiography adds another department to the mix. When a prenatal ultrasound raises suspicion of a heart defect, the study may initially be performed by a maternal-fetal medicine specialist in the obstetrics department. A retrospective analysis at one hospital compared diagnoses made by maternal-fetal medicine specialists with those of pediatric cardiologists who evaluated the same pregnancies.¹⁰ This collaborative model, where the OB team flags concerns and the pediatric cardiology team confirms and refines the diagnosis, is becoming increasingly common at major medical centers. The departments effectively share the work, with each contributing their area of expertise.

Why Radiology Rarely Performs Echocardiograms

If you have had other types of imaging, like a CT scan or an MRI, those studies were probably overseen by a radiologist. You might reasonably assume the same applies to echocardiograms. It does not. A study examining noninvasive cardiovascular imaging found that cardiologists performed about 61.5% of all such imaging while radiologists conducted about 16.7%. The dominant role of cardiologists was largely attributable to their near-monopoly on echocardiography specifically. Radiologists had a substantial presence in other cardiac imaging categories but not in echo.¹¹

The reasons are partly historical and partly practical. Echocardiography evolved within cardiology training programs. Cardiologists learn to perform and interpret echos during fellowship, and many use the images in real time during clinical decision-making. Radiology training, by contrast, emphasizes cross-sectional imaging and traditionally spends less time on echocardiography. There is overlap in modalities like cardiac MRI and cardiac CT, where both cardiologists and radiologists may interpret studies. But for standard echo, you are almost certainly dealing with the cardiology department.

Contrast Echocardiography and Stress Testing

Two specialized forms of echo deserve mention because they sometimes raise questions about who is involved. Contrast echocardiography uses microbubble agents injected into a vein to improve image quality. These tiny gas-filled bubbles light up on ultrasound, making it much easier to see the borders of the heart chambers, especially in patients who are difficult to image due to body size or lung disease. Contrast echocardiography has become an essential component of the modern echo lab, used during both rest and stress studies.¹² The contrast agent is administered by nursing staff or the sonographer under physician supervision, all within the cardiology echo lab.

Stress echocardiography combines the echo with either exercise on a treadmill or a pharmacologic agent that mimics exercise by increasing heart rate. The sonographer captures images before and immediately after stress, and a cardiologist compares the two to look for regions of the heart that do not squeeze normally under demand, which can indicate blocked coronary arteries.¹³ Stress echo is performed exclusively in settings with physician oversight and resuscitation equipment available, whether that is a cardiology office, an outpatient echo lab, or a hospital-based cardiac testing suite. A nuclear medicine department can perform a related but different test, a nuclear stress test, which uses radioactive tracers rather than ultrasound. The two are not interchangeable, though they answer similar clinical questions.

The Cardiac Sonographer

The person actually holding the probe against your chest during a standard echocardiogram is usually a cardiac sonographer, not a physician. Understanding their role clears up a lot of confusion about departments. Cardiac sonographers are specialized technologists who complete formal education programs and must obtain credentials from recognized organizations. The American Society of Echocardiography specifies that a cardiac sonographer must obtain a recognized credential through pathways provided by either the American Registry for Diagnostic Medical Sonography or Cardiovascular Credentialing International, and must fulfill formal educational requirements through recognized programs.¹⁴

Sonographers acquire the images, take preliminary measurements, and prepare the study for physician review. The cardiologist then interprets the images, correlates findings with the clinical picture, and generates the final report. In point-of-care settings like the ED or ICU, the physician often does both jobs themselves, acquiring and interpreting in real time. This dual role is part of what makes POCUS faster for acute situations but also why it is less comprehensive than a formal lab study.

Laboratory Accreditation

Not every echo lab is equal. The Intersocietal Accreditation Commission, or IAC, runs a voluntary accreditation program that evaluates how an echo laboratory operates day to day.¹⁵ Accreditation was introduced in 1996 and is not required by law, but it can affect insurance reimbursement and signals a facility’s commitment to quality.¹⁶ If you are choosing where to have your echo done, asking whether the lab is IAC-accredited is a reasonable quality check. Accredited labs undergo review of their equipment, staffing, protocols, image quality, and physician interpretation standards on a recurring cycle.

Mobile and Tele-Echocardiography Services

People living in rural or underserved areas may not have a cardiology echo lab anywhere nearby. Several models have emerged to close this gap. One approach uses mobile examination units, essentially trucks or vans equipped with echocardiography machines and sometimes CT scanners, that travel to remote communities.¹⁷

Another model sends cardiac sonographers from a central institution to regional hospitals and clinics, where they perform complete transthoracic studies and transmit the digital images back to the home institution for interpretation by a cardiologist.¹⁸ Tele-echocardiography extends this concept further, allowing real-time or store-and-forward transmission of echo images for remote interpretation. This modality is especially beneficial in critical care settings, emergency rooms, rural clinics, and mobile health units where timely cardiac diagnosis is vital.¹⁹ In these cases, the “department” performing your echo may technically be a cardiology division at a hospital hundreds of miles away, with the sonographer on-site and the interpreting physician elsewhere.

Artificial Intelligence in the Echo Lab

AI tools are starting to change the workflow inside echo labs in ways that affect how quickly you get results. An FDA-approved AI platform has been tested in a randomized crossover trial where sonographers alternated between standard manual measurement days and AI-assisted days. The AI tool automatically measured key echocardiographic parameters, eliminating the need for manual measurements in most cases.²⁰

A separate study at a high-volume hospital integrated an AI system into its echo department’s infrastructure within six weeks and found good to very good agreement between AI and human measurements for most parameters. Agreement was particularly strong for ejection fraction, the most commonly reported number from an echo, with an intraclass correlation coefficient of 0.81.²¹ These tools do not replace the sonographer or the interpreting cardiologist, but they handle much of the time-consuming measurement work, potentially freeing up staff for more complex studies and reducing wait times.

Insurance and Scheduling Logistics

The department question also has a practical, administrative dimension. Whether your echo is scheduled through a hospital-based cardiology lab, a freestanding imaging center, or a cardiologist’s office can affect insurance coverage, out-of-pocket costs, and how long you wait. Many insurance plans require prior authorization before an echocardiogram will be covered. One health system that implemented an automated scheduling tool for echocardiograms found that managing insurance and authorization processes was central to making the system work. They started with Medicare patients, for whom no prior authorization was needed, and then expanded to other insurance types after establishing the workflow.²²

The same study found that the trend toward physician office-based echocardiography contributed to increased overall spending. From a practical standpoint, if your doctor orders an echo and gives you a choice between a hospital outpatient department and a cardiology office, the office-based option may be scheduled faster, but costs can vary. Checking with your insurance plan before the appointment saves surprises. If the test requires contrast or is a stress echo, the facility needs to be equipped for those specific protocols, which may limit your options to larger cardiology labs or hospital-based settings.