Intermediate
Technical
IVT
inversion time
Time interval between inversion pulse and image acquisition in MRI, critical for tissue contrast optimization.
Full Definition
Inversion time is a key timing parameter in MRI pulse sequences that determines the delay between applying a 180-degree inversion pulse and acquiring image data. In cardiac imaging, proper inversion time selection is crucial for late gadolinium enhancement imaging to null normal myocardium and maximize contrast with enhanced tissue. The optimal inversion time varies based on patient factors and contrast pharmacokinetics, typically ranging from 200-400 milliseconds for cardiac applications.
Usage
Usage note: Often abbreviated as 'TI' in technical discussions.
In Context
- "The inversion time was adjusted to 320ms to achieve optimal nulling of normal myocardium." — LGE sequence optimization
- "TI scout images were acquired to determine the appropriate inversion time for each patient." — MRI protocol description
Also known as
TI
inversion delay
Don't confuse with
echo time
repetition time
flip angle