An ultrasound is usually interpreted by a radiologist, a doctor trained to read medical images. A sonographer commonly performs the scan and captures the pictures, but does not usually provide the final report. Depending on the scan and where it is done, a specialist such as a cardiologist or the treating clinician may interpret the images. Your referring healthcare professional usually explains what the report means for you.
Who is responsible for reading ultrasound images?
In many diagnostic imaging settings, a radiologist interprets ultrasound images and prepares a written report. Radiologists are medical doctors with specialized training in medical imaging. They examine the pictures, assess the structures being investigated, and describe findings that may be relevant to the reason for the scan.
The radiologist's role is not limited to looking at individual pictures. The doctor may consider the information provided with the examination, including the reason for the scan, relevant medical history, and previous imaging when available. According to RadiologyInfo.org, a patient resource from the Radiological Society of North America and the American College of Radiology, radiologists interpret ultrasound and other medical images and communicate with the healthcare professional who requested the examination.
However, not every ultrasound follows exactly the same process. The professional who interprets the images depends on the type of examination, the clinical setting, local healthcare arrangements, and the training and responsibilities of the professionals involved.
What is the difference between a sonographer and a radiologist?
A sonographer and a radiologist often work together, but their roles are different. Understanding this distinction can help explain why the person performing your scan may not be the person who discusses the final report with you.
What does a sonographer do?
A sonographer is a trained healthcare professional who operates the ultrasound equipment and obtains images of organs, tissues, blood vessels, or other structures. During the examination, the sonographer positions the ultrasound probe, adjusts the equipment, captures the necessary views, and takes measurements when needed.
The quality and completeness of the images are important because the interpreting professional uses them to assess the area being examined. The sonographer may also ask questions about the reason for your examination or follow a specific imaging protocol. Although sonographers may recognize features that need closer attention, their responsibility for interpreting or reporting findings varies by healthcare system and professional qualifications.
What does a radiologist do?
A radiologist reviews the ultrasound images and prepares a diagnostic interpretation when the examination is referred for radiology reporting. The report describes the relevant findings and may include an impression summarizing their significance or recommending further assessment when appropriate.
The interpreting doctor may compare the images with previous scans and consider the clinical information supplied by the referring professional. The completed report is generally sent to the healthcare professional who requested the examination, who can then explain the findings and discuss any next steps.
Can a specialist other than a radiologist interpret an ultrasound?
Yes. Some ultrasound examinations are interpreted by doctors with expertise in the organ or body system being examined. In other situations, a treating clinician performs a focused ultrasound at the bedside and interprets the images as part of the patient's immediate assessment.
Heart ultrasound
An ultrasound of the heart is called an echocardiogram. It shows the heart's structure and movement and can help doctors assess how it is functioning. According to MedlinePlus, a service of the US National Library of Medicine, a specially trained sonographer commonly performs the examination, while a cardiologist interprets the results. The cardiologist may communicate findings to the healthcare professional managing the patient's care.
Bedside and point-of-care ultrasound
Some doctors use portable ultrasound equipment during an appointment or hospital assessment. This is often called point-of-care ultrasound, or POCUS. It provides focused images that help a clinician assess a specific question in real time. For example, it may be used during an emergency assessment or to guide a medical procedure.
Stanford Medicine's Point of Care Ultrasound program describes this approach as ultrasound performed and interpreted by the clinician caring for the patient. A focused bedside examination does not necessarily replace a comprehensive diagnostic ultrasound. Depending on the clinical question, a separate examination and formal report may still be needed.
Pregnancy ultrasound
Pregnancy scans are commonly performed by trained sonographers. They may assess fetal growth, pregnancy dates, the position of the placenta, and other features relevant to the purpose of the examination. The interpretation and communication process depends on the type of scan and the healthcare service.
The NHS guidance on ultrasound scans during pregnancy explains that the sonographer can provide results at the appointment. Some findings may nevertheless require review by a radiologist, obstetrician, or another appropriately qualified clinician. Additional assessment may be arranged if the initial scan does not answer the clinical question.
How does a radiologist interpret an ultrasound?
Interpreting an ultrasound involves more than deciding whether a picture looks normal. The doctor reviews the images in relation to the body area examined, the purpose of the test, and the information available about the patient. If previous imaging is available, it may help the radiologist determine whether an appearance has remained stable or changed over time.
A typical ultrasound report contains several parts:
- Examination details: The type of ultrasound performed and other information about the examination.
- Clinical history: The reason the scan was requested, including relevant symptoms or medical background when provided.
- Findings: A description of the structures examined and the features observed in the images.
- Impression: A summary of the main findings and their possible significance.
- Recommendations: Any suggested follow-up imaging, further assessment, or comparison with other test results, when appropriate.
Not every report includes a separate recommendation. The exact wording and layout can also differ between imaging services. RadiologyInfo.org's guide to abdominal ultrasound reports explains how the findings and impression sections help the healthcare team understand the examination and consider whether further assessment is necessary.
Who explains your ultrasound results?
In many cases, the healthcare professional who requested the ultrasound is the person who explains the report. This may be your primary care doctor, obstetrician, cardiologist, or another specialist, depending on why the examination was ordered.
The radiologist's report provides an imaging assessment, while the treating professional considers it alongside your medical history, symptoms, physical examination, and other test results. This broader context helps determine what the findings mean for your care. If the report recommends further imaging or another assessment, the clinician can explain why it may be useful.
In some settings, a radiologist may also discuss the results directly with you. The person who provides the explanation and the timing of that discussion vary between facilities. You can ask the imaging department how the results will be communicated before or after your appointment.
How long does it take to receive ultrasound results?
The time needed to receive results depends on the type of examination, how urgently it was requested, and the reporting process at the facility. Some findings may be discussed during or shortly after the appointment, while other examinations require the images to be reviewed and a report to be completed later.
According to the NHS guidance on ultrasound scans, results may be provided at the end of the appointment or take longer to reach the patient, depending on the reason for the scan. Ask your healthcare team when to expect your report and which professional will contact you. If the expected time has passed, contact the referring clinician or imaging department rather than assuming that a delay means the scan was normal.
Can you ask the radiologist questions about your report?
Yes. You can ask whether a radiologist is available to clarify the imaging findings, although some facilities direct patient questions through the referring doctor. Your treating clinician is also an appropriate person to contact if you do not understand a term in the report or are unsure what happens next.
If you can access your report through an online patient portal, reading it before your follow-up appointment may help you prepare questions. However, avoid drawing conclusions from a single phrase without understanding the full report. Some imaging terms describe how a structure appears rather than establishing a particular diagnosis, and findings may need to be considered alongside other clinical information.
What should you do if your ultrasound report is unclear?
Contact the professional who requested the examination if you have questions about the findings, the meaning of a recommendation, or whether additional tests are needed. If you have had similar scans previously, tell your healthcare team where they were performed and ask whether the earlier images or reports can be reviewed for comparison.
If the ultrasound was ordered because of symptoms that persist or worsen, discuss them with your healthcare professional even if the report does not describe a clear explanation. A scan provides information about the structures examined, but it may not answer every clinical question. Your clinician can determine whether further evaluation is appropriate based on the complete picture.