Fast myocardial T1 mapping using shortened inversion recovery based schemes
نویسندگان
چکیده
منابع مشابه
Myocardial T1 mapping at 3.0T using inversion recovery FLASH readout
Background Myocardial T1 mapping methods such as modified Look-Locker inversion-recovery (MOLLI) typically use balanced steady state free precession (bSSFP) readout, which is known to be particularly sensitive to off resonance and thus limits its utility at higher field strengths. Fast low angle shot (FLASH) imaging is known to be more robust against susceptibility artifacts than bSSFP. However...
متن کاملFast T1 Mapping using modified Double-Inversion Recovery pre-pulse
INTRODUCTION The rapid measurement of the longitudinal relaxation time (T1) would allow for dynamic quantification of tissue perfusion or therapy response after administration of an extracellular or target specific T1 lowering contrast agent. Currently used T1 mapping methods are based on Inversion Recovery (IR) approaches and the subsequent sampling of the recovery of the Mz magnetization [1]....
متن کاملT1 mapping of myocardium using inversion recovery cine at 3.0T
Methods The sequence, IR-rttfl, performs realtime turboflash acquisition after an inversion pulse to capture the recovery of inverted magnetization. It is immune to T1 unrelated issues (e.g., field inhomogeneity). Diastolic images (about 12) are selected for T1 calculation using [4]. A trigger delay (about 300-400 ms) is applied before the inversion pulse so that initial magnetization recovery ...
متن کاملAdiabatic inversion pulses for myocardial T1 mapping.
PURPOSE To evaluate the error in T1 estimates using inversion-recovery-based T1 mapping due to imperfect inversion and to perform a systematic study of adiabatic inversion pulse designs in order to maximize inversion efficiency for values of transverse relaxation (T2) in the myocardium subject to a peak power constraint. METHODS The inversion factor for hyperbolic secant and tangent/hyperboli...
متن کاملAssessment of diffuse myocardial fibrosis in rats using small-animal Look-Locker inversion recovery T1 mapping.
BACKGROUND The concentration of gadopentetate dimeglumine in myocardium and blood can be assessed from T1 measurements and can be used to calculate the extracellular volume (ECV) of the myocardium. We hypothesized that diffuse myocardial fibrosis in a small-animal model could be quantitatively assessed by measuring myocardial ECV using small-animal Look-Locker inversion recovery T1 mapping. M...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2019
ISSN: 1053-1807
DOI: 10.1002/jmri.26649