repetition time


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rep·e·ti·tion time (TR),

in magnetic resonance imaging, the time between repetitions of the pulse sequence.

repetition time (TR)

in magnetic resonance pulse sequences, the time interval before the basic pulse sequence is repeated.

repetition time

An MRI term for the timespan between successive pulse sequences applied to the same slice, which is delineated by initiating the first radio frequency (RF) pulse of the sequence and then repeating the same RF pulse at a time t. TR variations are important in controlling image contrast characteristics. Short TRs (< 1000 ms) are used to enhance T1 contrast; long TRs (> 1500 ms) are commonly used to enhance T2 contrast. TR is a major factor in total scan time.

rep·e·ti·tion time

(TR) (rep'ĕ-tish'ŭn tīm)
magnetic resonance imaging The time between repetitions of the pulse sequence.
References in periodicals archive ?
puls] are, respectively, the constant calculated in the repetition time period, and the variable components of the instantaneous active power of the ESS; [i.
or for the average, calculated in the repetition time period, value
Conventional spin echo presented moderately low percentage error with the choice of repetition time and echo time.
The repetition time of the modulation is typically much slower, because the modulating waveform is at a significantly lower frequency than the RF.
10) Eight rows for each subject on each repetition times two repetitions times 94 subjects (64 subjects doing it in groups + 32 subjects doing it individually).