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Advanced Cardiac Imaging Glossary

100 terms total — 24 showing — Last updated 15 Sep 2026

microvascular obstruction MVO

Advanced Technical IVT

No-reflow phenomenon in capillary beds following reperfusion, appearing as dark zones within areas of late gadolinium enhancement on cardiac MRI.

Showing 73–96 of 100

PET

Intermediate Technical IVT

An advanced nuclear imaging technique using positron-emitting tracers to assess myocardial perfusion, metabolism, and vi...

Technical Term Full entry →

phase-contrast MRI

Advanced Technical IVT

Specialized MRI technique that measures blood flow velocity and volume by detecting phase shifts in moving protons.

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phase-velocity encoding

Advanced Technical IVT

A cardiac MRI parameter that determines flow sensitivity in phase-contrast sequences, requiring precise technical specif...

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post-contrast T1

Professional Technical IVT

T1 relaxation time measurement obtained after gadolinium administration, used to calculate extracellular volume fraction...

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PSIR

Advanced Technical IVT

Phase-sensitive inversion recovery sequence that optimizes contrast between normal myocardium and scar tissue in cardiac...

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radial strain

Advanced Technical IVT

Myocardial deformation measurement representing thickening and thinning of the heart wall in the radial direction during...

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regadenoson stress test

Intermediate Formal IVT

Pharmacological stress test using selective A2A adenosine receptor agonist for cardiac perfusion imaging with fewer side...

regurgitant volume

Intermediate Technical IVT

Quantitative measure of the amount of blood flowing backward through an incompetent cardiac valve during each cardiac cy...

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RWMA

Intermediate Technical IVT

Regional wall motion abnormality, describing impaired contraction in specific myocardial segments during cardiac imaging...

Abbreviation Full entry →

SAPPHIRE-HF

Professional Technical IVT

A clinical trial designation that editors frequently encounter in cardiac device imaging research papers and regulatory...

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septal bounce

Advanced Technical IVT

An abnormal pattern of interventricular septal motion characterized by early diastolic leftward movement toward the left...

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SPECT

Intermediate Technical IVT

A nuclear imaging technique that uses gamma rays to create three-dimensional images of myocardial perfusion and function...

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SSFP

Intermediate Technical IVT

Steady-state free precession MRI sequence providing high contrast between blood and myocardium, commonly used for cardia...

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STIR sequence

Advanced Technical IVT

Short tau inversion recovery MRI sequence that suppresses fat signal to enhance visualization of edema and inflammation...

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strain imaging

Advanced Technical IVT

Advanced echocardiographic technique measuring myocardial deformation to detect subtle contractile abnormalities.

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stress-redistribution protocol

Advanced Technical IVT

Nuclear imaging sequence using thallium-201 to assess both perfusion and viability in a single study.

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T1 mapping

Advanced Technical IVT

Quantitative MRI technique that measures native T1 relaxation times to detect diffuse myocardial fibrosis and infiltrati...

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T2 mapping

Advanced Technical IVT

Quantitative MRI technique measuring tissue T2 relaxation times to detect myocardial edema and inflammation.

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TAPSE

Intermediate Technical IVT

Tricuspid annular plane systolic excursion; echocardiographic measurement of right ventricular longitudinal function.

Abbreviation Full entry →

TIMI flow grade

Professional Technical IVT

Standardized classification system for assessing coronary blood flow during angiography.

Technical Term Full entry →

tissue Doppler imaging

Intermediate Technical IVT

Ultrasound technique measuring myocardial tissue velocities to assess regional cardiac function and timing of mechanical...

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TR velocity

Intermediate Technical IVT

The peak velocity of blood flow across the tricuspid valve, used to estimate pulmonary artery systolic pressure.

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transmural infarction

Intermediate Technical IVT

Myocardial infarction extending through the full thickness of the ventricular wall. Associated with Q-wave formation and...

Technical Term Full entry →

ventricular concordance

Advanced Technical IVT

The normal relationship between the morphological and functional characteristics of the right and left ventricles in con...

Technical Term Full entry →
Showing 73–96 of 100

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