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Radiologist viewing computed tomography

Radiology is a branch of medicine that uses medical imaging technologies to diagnose and treat diseases within the human body.[1] A medical doctor who specializes in radiology is known as a radiologist.


Radiologists employ a range of imaging technologies including X-ray radiography, ultrasound, computed tomography (CT), nuclear medicine (such as positron emission tomography (PET)), and magnetic resonance imaging (MRI) to diagnose or treat diseases.[2] These imaging techniques provide non-invasive, painless methods for visualizing the structure and function of the human body, making it possible to diagnose diseases at their earliest, most treatable stages.


Interventional Radiology

Interventional radiology involves the use of imaging technologies to guide the performance of usually minimally invasive medical procedures.[3] These procedures often replace traditional surgery, reducing patient risk and improving outcomes. For example, angioplasty, stent placement, biopsy procedures, and tumor ablation are commonly performed under imaging guidance.

Diagnostic Radiology

Diagnostic radiology involves the interpretation of images to diagnose disease.[4] Radiologists "read" the images and produce a report of their findings and impression or diagnosis. This report is then transmitted to the ordering physician, either routinely or emergently.

Role of Radiologic Technologists

The acquisition of medical images is usually carried out by a Radiographer or Radiologic Technologist. They are responsible for positioning the patient and adjusting the imaging equipment to obtain the best quality images.[5]

List of Radiologists (USA)

See Also


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  1. ARRT. "What Does a Radiologic Technologist Do?". The American Registry of Radiologic Technologists. Retrieved 2019-05-25.

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