منابع مشابه
A Tagged-Cine MRI Investigat
This project investigates the articulatory properties of German vowels on the basis of tagged Cine-MRI data. German has 15 monophthongs, which are classified into seven tense-lax pairs. Understanding the phonetic correlate of vowel tenseness has proven elusive, partly due to the difficulty of obtaining global shape information for the tongue, especially the pharyngeal portion. Tagged Cine-MRI a...
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Introduction: Several MRI applications involve imaging a dynamic object to resolve its temporal behavior. In such applications, it is often difficult to achieve the desired temporal resolution while maintaining the required spatial resolution and fieldof-view (FOV). Methods have been developed to increase the temporal resolution in the special case where only a fraction of the FOV undergoes dyn...
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Background Displacement encoding with stimulated echoes (DENSE) is an accurate and reproducible [1,2] technique for measuring myocardial strain throughout the cardiac cycle. The strain maps provided could be valuable in dilated cardiomyopathy (DCM) patients where strain has a prognostic value [3]. However, DENSE acquisitions typically require long breath holds which are difficult for DCM patien...
متن کاملInterleaved spiral cine coronary artery velocity mapping.
Navigator-echo controlled interleaved spiral cine coronary-artery velocity maps were acquired in eight free-breathing volunteers. Good quality data were achieved in all subjects with phasic flow being clearly demonstrated. The improved efficiency of spiral k-space coverage compared to that of more conventional spin-warp techniques resulted in a mean scan time for 256 x 256 pixel-matrix studies ...
متن کاملCine DENSE MRI with Dual Displacement Encoding
Introduction Cine DENSE (Displacement Encoding with Stimulated Echoes) MRI acquires a temporal sequence of images where the phase of each image is encoded for tissue displacement. More specifically, the phase of the DENSE stimulated-echo signal is given by θ = keΔx, where Δx is the tissue displacement and ke is the userspecified displacement-encoding frequency (a parameter analagous to the “ven...
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ژورنال
عنوان ژورنال: Question/Cuestión
سال: 2020
ISSN: 1669-6581
DOI: 10.24215/16696581e423