Repetition time
Last revised by Andrew Murphy ◉ on 02 Apr 2020
Citation, DOI & article data
Citation:
Yeung J, Murphy A, Bell D, et al. Repetition time. Reference article, Radiopaedia.org (Accessed on 03 Feb 2023) https://radiopaedia.org/articles/14588
DOI:
-
Permalink:
rID:
14588
Article created:
08 Aug 2011 by J Yeung
Revisions:
7 times by 5 users - see full revision history
Sections:
Synonyms:
- TR
The repetition time (TR) is the time from the application of an excitation pulse to the application of the next pulse. It determines how much longitudinal magnetization recovers between each pulse. It is measured in milliseconds.
Related articles: Imaging physics
- imaging physics
- imaging in practice
- imaging technology
-
x-ray physics
- ionizing radiation
- interaction with matter
- x-ray spectrum
- radiation units
- effective dose
- entrance skin dose
- radiation safety
- radiation damage (biomolecular)
- radiation damage (skin injury)
- stochastic effect
- CT physics
-
MRI physics
- B0
- chemical shift
- dependence of magnetization (proton density, field strength and temperature)
- echo time
- eddy currents
- electromagnetic induction
- Ernst angle
- flip angle
- Larmor frequency
- magnetic dipole
- magnetic field gradient
- magnetic susceptibility
- magnetism
- molecular tumbling rate effects on T1 and T2
- net magnetization vector (NMV)
- relaxation
- repetition time
- resonance and radiofrequency (RF)
- units of magnetism
- ultrasound physics
- nuclear medicine physics
Unable to process the form. Check for errors and try again.