Vascular Imaging Glossary

Digital imaging parameter defining the number of data points collected in each spatial dimension during image formation.

Abnormal focal enlargement of a blood vessel to more than 150% of its normal diameter, creating a weakened, bulging area...

A medical imaging study that visualizes blood vessels using contrast material and X-rays.

An imaging study that visualizes arteries using contrast material, typically obtained through catheter-based angiography...

An abnormal direct connection between an artery and vein, bypassing the normal capillary bed.

Abnormal tangle of blood vessels connecting arteries and veins directly without normal capillary beds, creating high-flo...

Fatty deposits that build up within artery walls, visible on imaging studies as areas of altered vessel contour or densi...

Temporary arterial occlusion procedure used to assess collateral circulation and neurological tolerance before permanent...

Vascular stent deployed by inflating a balloon catheter to expand the device.

Image distortion where calcified plaques appear larger than actual size on gradient-echo sequences.

Technique to synchronize image acquisition with peak arterial contrast enhancement.

Atherosclerotic plaque containing calcium deposits that appear as high-density areas on CT imaging.

An endovascular procedure involving placement of a stent in the carotid artery to treat stenosis.

Nested catheter arrangement with inner catheter passing through outer guiding catheter.

Alternative blood flow pathways that develop to bypass blocked or narrowed vessels.

Evaluation of alternative vascular pathways that develop to maintain perfusion when primary vessels are compromised.

A dynamic CT imaging technique that evaluates tissue blood flow and perfusion parameters.

Abnormal leakage of contrast material outside blood vessels during imaging, indicating vessel injury or increased permea...

Acute kidney injury that occurs following administration of iodinated contrast material.

Imaging system's ability to differentiate between tissues or structures with similar attenuation or signal characteristi...

Persistent contrast retention within tissues or vessel walls visible on delayed imaging phases.

Precise temporal coordination of contrast injection with image acquisition to optimize vascular enhancement and diagnost...

Small test injection of contrast material used to determine optimal timing for main contrast bolus in vascular imaging s...

Computed tomography angiography, a non-invasive imaging technique using contrast-enhanced CT to visualize blood vessels.