Rapid quantitative lung1H T1 mapping
نویسندگان
چکیده
منابع مشابه
Rapid cardiac T1 mapping within two heartbeats
Introduction: T1-mapping offers a mean to quantitatively assess structural changes in the myocardium. Pre-contrast T1 mapping may assess areas at risk while post-contrast delayed-enhancement T1 mapping may assess myocardial infarction [1-3]. Multi-point T1 mapping approaches, such as Modified Look-Locker inversion recovery (MOLLI) [4], have been shown to detect changes in myocardial T1 in both ...
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PURPOSE To develop an arrhythmia-insensitive rapid (AIR) cardiac T1 mapping pulse sequence for quantification of diffuse fibrosis. METHODS An arrhythmia-insensitive cardiac T1 mapping pulse sequence was developed based on saturation recovery T1 weighting, which is inherently insensitive to heart rate and rhythm, and two single-shot balanced steady-state free precession image acquisitions with...
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Human brain tumors such as glioblastomas are typically detected using conventional, nonquantitative magnetic resonance imaging (MRI) techniques, such as T2-weighted and contrast enhanced T1-weighted MRI. In this manuscript, we tested whether dynamic quantitative T1 mapping by MRI can localize orthotopic glioma tumors in an objective manner. Quantitative T1 mapping was performed by MRI over mult...
متن کاملSaturation pulse design for quantitative myocardial T1 mapping
BACKGROUND Quantitative saturation-recovery based T1 mapping sequences are less sensitive to systematic errors than the Modified Look-Locker Inversion recovery (MOLLI) technique but require high performance saturation pulses. We propose to optimize adiabatic and pulse train saturation pulses for quantitative T1 mapping to have <1 % absolute residual longitudinal magnetization (|MZ/M0|) over ran...
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Background Quantitative myocardial perfusion MRI depends on accurate determination of the arterial input function (AIF). Unfortunately, typical doses of contrast agent (CA) cause saturation in the AIF signal intensity at peak CA concentrations. Methods using dual boluses [1] or dual sequences [2] have been proposed to correct for this effect; however, they require additional data acquisition wh...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2001
ISSN: 1053-1807,1522-2586
DOI: 10.1002/jmri.10024