Cardiac Imaging Glossary
100 terms total — 24 showing — Last updated 15 Sep 2026
T2 mapping
A cardiac MRI technique that quantifies myocardial water content to detect tissue edema and inflammation.
PSAX
Parasternal short-axis echocardiographic view used to assess left ventricular function and valve morphology.
PSIR
Phase-sensitive inversion recovery imaging sequence used to detect myocardial scarring with improved contrast between he...
RCA
The coronary artery arising from the right sinus of Valsalva, supplying the inferior wall and right ventricle.
RVOT
Right ventricular outflow tract, the pathway through which blood flows from the right ventricle to the pulmonary artery.
RVSP
Right ventricular systolic pressure, estimated using tricuspid regurgitation velocity in echocardiography.
RWMA
Regional wall motion abnormality detected on cardiac imaging, indicating areas of impaired myocardial contractility.
RWT
Relative wall thickness, a dimensionless parameter assessing left ventricular geometry and remodeling.
SAM
Systolic anterior motion of the mitral valve, causing dynamic left ventricular outflow tract obstruction.
septal bounce
Abnormal interventricular septal motion characterized by early diastolic reversal, typically seen in right heart volume...
SPECT
A nuclear imaging technique that creates three-dimensional images of myocardial perfusion using radioactive tracers.
STEMI
ST-elevation myocardial infarction, a severe type of heart attack characterized by complete blockage of a coronary arter...
STIR sequence
Short tau inversion recovery MRI sequence that suppresses fat signal to enhance visualization of myocardial edema and in...
strain imaging
An advanced echocardiographic technique that measures myocardial deformation to assess cardiac function.
stress perfusion MRI
A cardiac MRI technique that assesses myocardial blood flow during pharmacological stress using gadolinium contrast agen...
SYNTAX score
An angiographic scoring system used to grade the complexity of coronary artery disease and guide treatment decisions.
T1 mapping
A quantitative cardiac MRI technique that measures tissue relaxation time to assess myocardial fibrosis and infiltrative...
T2 mapping
A cardiac MRI technique that quantifies myocardial water content to detect tissue edema and inflammation.
T2-weighted imaging
MRI sequence sensitive to tissue water content, useful for detecting myocardial edema and inflammation.
TAPSE
Tricuspid annular plane systolic excursion, a measure of right ventricular longitudinal systolic function.
TAVR
Transcatheter aortic valve replacement, a minimally invasive procedure to replace a stenotic aortic valve.
TEE
Transesophageal echocardiography, an imaging technique using an ultrasound probe inserted through the esophagus for deta...
temporal resolution
The ability of a cardiac imaging technique to distinguish events occurring at different times during the cardiac cycle.
TIMI flow grade
A standardized angiographic classification system for assessing coronary blood flow during cardiac catheterization.
tissue Doppler imaging
Echocardiographic technique measuring myocardial velocities to assess regional and global cardiac function.