Advanced
Technical
IVT
susceptibility mapping
MRI technique measuring tissue magnetic susceptibility differences to detect iron, calcium, and blood products.
Full Definition
Susceptibility mapping is an advanced MRI technique that quantifies local variations in magnetic susceptibility to identify paramagnetic and diamagnetic substances within brain tissue. This method is particularly sensitive to iron deposition, calcification, and blood products, making it valuable for detecting microbleeds, iron accumulation in neurodegenerative diseases, and vascular malformations. Quantitative susceptibility mapping provides more precise measurements than conventional susceptibility-weighted imaging.
Usage
Usage note: Distinguish from susceptibility-weighted imaging, which is qualitative rather than quantitative.
In Context
- "Susceptibility mapping revealed increased iron deposition in the substantia nigra." — Research study
- "Quantitative susceptibility mapping demonstrated paramagnetic rim lesions." — Clinical report
Also known as
QSM
quantitative susceptibility mapping
Don't confuse with
susceptibility-weighted imaging