What does angiography mean?
Angiography is a medical imaging technique used to visualise the inside of blood vessels and the chambers of the heart. A radiopaque contrast agent is injected into the bloodstream, making the vessels visible under X-ray, fluoroscopy, CT, or MRI. Because it shows precisely where arteries narrow, bulge, or leak, angiography plays a central role in diagnosing conditions such as coronary artery disease, aneurysms, strokes, and peripheral vascular disease. The word derives from the Greek roots angeion ('vessel') and graphein ('to write' or 'to record'), so it literally means recording an image of vessels. Clinicians often specify the region examined — coronary, cerebral, pulmonary, or renal angiography — and modern refinements include digital subtraction angiography, which enhances contrast digitally. Although the term belongs to formal medical register, patients frequently meet its cousin 'angiogram', meaning the image itself. Since its development in the early twentieth century, angiography has transformed vascular medicine by allowing physicians to map the circulatory system without surgery.
nounA medical imaging technique in which a contrast dye is injected into blood vessels or chambers of the heart so that they can be visualised on X-ray, CT, MRI, or fluoroscopy.
- Medical imaging of blood vessels or heart chambers after injection of a radiopaque contrast agent.
- By extension, imaging studies of other structures using contrast injection, such as lymphatic or retinal vessels.
"The cardiologist scheduled an angiography to pinpoint the blockage in the patient's coronary artery."
"Following her stroke, the neurologist ordered cerebral angiography to identify the source of the bleeding."
"Digital subtraction angiography revealed a small aneurysm that standard scans had missed."
Rarely pluralised; the technique is usually discussed as a singular procedure or class of procedures.
"Over his career the radiologist performed thousands of angiographies."
The word literally means 'painting the blood vessels' — and since its invention in the 1920s, it has let doctors see inside living arteries without ever opening the body.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of angiography
The word angiography combines two Greek roots: angeion, meaning a small vessel or container, and graphein, meaning to write or record. It was coined in the early twentieth century as clinicians first succeeded in opacifying blood vessels with contrast media for X-ray imaging, building on experiments from the 1920s onwards. It shares its angeion root with related medical terms such as angiogram, angiosperm, and angina, and its graphein root with other '-graphy' words like photography and tomography.
Related word forms
How angiography is actually used
Angiography is a technical term used almost exclusively in medical and clinical contexts. It is uncountable when referring to the technique in general but may appear with modifiers naming the vessel system imaged (coronary, cerebral, pulmonary). In everyday speech patients are more likely to encounter 'angiogram', which refers to the resulting image or, loosely, to the whole test.
Easily confused with angiography
Angiography is a diagnostic imaging procedure that visualises blood vessels, whereas angioplasty is a therapeutic procedure that opens narrowed vessels, often with a balloon or stent.
An angiogram is the actual image produced by angiography; angiography is the imaging procedure itself.