Cardiovascular Radiology Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
restenosis
Re-narrowing of previously treated vessel segment, typically occurring within 6-12 months.
IVUS-VH
Intravascular ultrasound with virtual histology technology that provides color-coded tissue characterization of coronary...
IVUS-XS
Cross-sectional intravascular ultrasound imaging providing detailed vessel wall morphology.
kissing balloon inflation
Simultaneous inflation of two balloons in the main vessel and side branch during bifurcation interventions.
LAD-diagonal bifurcation
The branching point where a diagonal branch arises from the left anterior descending coronary artery.
LAO
Angiographic projection angle positioning the image intensifier to the patient's left side and anteriorly.
late lumen loss
Quantitative angiographic measurement of luminal renarrowing from post-procedure to follow-up angiography.
LCX
Left circumflex coronary artery, a major branch of the left coronary system supplying the lateral and posterior walls of...
left heart catheterization
Invasive procedure to evaluate left-sided cardiac pressures, coronary anatomy, and left ventricular function.
LIMA
Left internal mammary artery, commonly used as a bypass graft conduit in cardiac surgery.
LIMA graft
Internal mammary artery conduit used for coronary artery bypass surgery, typically to the LAD.
LIMA-to-LAD anastomosis
Surgical connection of the left internal mammary artery to the left anterior descending coronary artery in bypass surger...
LMCA
Left main coronary artery, the short segment that bifurcates into the LAD and circumflex arteries.
MACE
Composite endpoint used in cardiovascular trials encompassing death, myocardial infarction, and revascularization.
minimal lumen area
Smallest cross-sectional area within a coronary vessel segment, measured by intravascular imaging.
MSCT
Advanced CT imaging technique using multiple detector rows for rapid, high-resolution cardiac imaging.
myocardial blush grade
Angiographic assessment system for evaluating microvascular perfusion in the myocardium during coronary angiography.
NIRS-IVUS
Combined imaging system using near-infrared spectroscopy and intravascular ultrasound for plaque characterization.
no-reflow phenomenon
Impaired myocardial perfusion despite successful restoration of epicardial coronary flow, typically occurring after repe...
NSTEMI
Non-ST-elevation myocardial infarction with subendocardial tissue death but preserved epicardial flow.
obtuse marginal
Lateral branches of the left circumflex artery that supply the lateral wall of the left ventricle.
OCT
High-resolution intravascular imaging technique using near-infrared light to visualize coronary artery microstructure.
ostial lesion
Atherosclerotic narrowing located at the origin or opening of a coronary artery or branch vessel.
PDA
Posterior descending artery, which supplies the inferior wall of the left ventricle and inferior interventricular septum...
periprocedural MI
Myocardial infarction occurring during or within 48 hours of percutaneous coronary intervention.