parametric mapping
Quantitative imaging technique that creates pixel-by-pixel maps of tissue properties such as T1, T2, or extracellular volume in cardiac MRI.
Full Definition
Parametric mapping is an advanced cardiac MRI technique that generates color-coded maps displaying quantitative tissue characteristics on a pixel-by-pixel basis. Common applications include T1 mapping for detecting diffuse fibrosis and infiltrative diseases, T2 mapping for identifying myocardial edema and inflammation, and extracellular volume (ECV) mapping for assessing myocardial fibrosis. These maps provide objective, reproducible measurements that can detect subtle pathological changes before they become apparent on conventional imaging sequences. The technique requires specialized pulse sequences and post-processing software to calculate and display the parametric values as color overlays on anatomical images.
Usage
Usage note: Often used as an umbrella term for various quantitative mapping techniques; specify the particular mapping method when possible.
In Context
- "Parametric mapping revealed elevated T1 values consistent with cardiac amyloidosis." — Diagnostic imaging report
- "The parametric mapping protocol included native T1, post-contrast T1, and ECV calculations." — MRI scanning protocol