An angiogram is an x-ray examination of the arteries (arteriogram) and veins (venogram) to detect blockage or narrowing of vessels.

See also Adventitia and Ischemia.

Angiography means the imaging of veins and arteries. The examination is called angiogram.

See also CT Angiography, Coronary Angiogram, Digital Subtraction Angiography, Venography and Magnetic Resonance Angiography MRA, Contrast Media Injector, Single-Head CT Power Injector.

Angioplasty is an interventional radiology treatment. A small balloon on the tip of a catheter is inserted into a blood vessel to widen up a narrowed or obstructed artery, often caused by atherosclerosis.

(Å* or A*) A unit used to measure the wavelength of x-rays.
Definition: 0.1 nanometer or 10^-10 meter or 100 picometer.

The angular response is the reaction of the detector to particles or photons which hit the detector at angles deviant from a normal to the facial plane of usual incidence.