Evaluation of complex cystic masses of the brain: value of steady-state free-precession MR imaging.
نویسندگان
چکیده
منابع مشابه
MR angiography using steady-state free precession.
Contrast-enhanced MR angiography (CE-MRA) using steady-state free precession (SSFP) pulse sequences is described. Using SSFP, vascular structures can be visualized with high signal-to-noise ratio (SNR) at a substantial (delay) time after the initial arterial pass of contrast media. The peak blood SSFP signal was diminished by <20% 30 min after the initial administration of 0.2 mmol/kg of Gd-che...
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Introduction: T1ρ MRI is typically performed by magnetization preparation followed by a readout sequence during which the T1ρ-weighted signal is frequency and phase encoded (1). This paradigm is inherently time inefficient and, instead, it might be desirable to continuously acquire the T1ρ-weighted signal in the steady-state. Unfortunately, it isn’t clear how to establish a steady-state T1ρ con...
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Background Access to appropriate images of fetal brain can greatly assist to diagnose of probable abnormalities. The aim of this study was to compare the suitability of T2-True Fast Imaging with Steady State Free Precession (T2-TRUFI), and T2-Half-Fourier Acquisition Single-Shot Turbo Spin-Echo (T2- HASTE( magnetic resonance imaging (MRI) to extract the fetal brain using the level set algorithm...
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The authors describe a steady-state free precession technique for imaging the inner ear. Although the signal-to-noise ratio is not as great as with other three-dimensional MR techniques, the inherent high contrast of inner ear structures makes this a valuable technique for patients with sensorineural hearing loss and for those who refuse paramagnetic contrast material.
متن کاملNontriggered Cartesian steady-state free precession phase-contrast MR
Introduction: Nontriggered phase-contrast (PC)-MR has been proposed for measurement of time-averaged velocity [1]. However, gradient-echo PC-MR is biased by in-flow enhancement when typical flip angles and slice widths are used, leading to velocity overestimation [2]. We hypothesize that nontriggered PCsteady state free precession (SSFP), which exhibits less signal variation over the cardiac cy...
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ژورنال
عنوان ژورنال: American Journal of Roentgenology
سال: 1992
ISSN: 0361-803X,1546-3141
DOI: 10.2214/ajr.159.5.1414774