Myocardial T1 Mapping with Phase-Sensitive Motion Correction and Inversion Recovery Fitting
نویسندگان
چکیده
Hui Xue, Andreas Greiser, Christoph Guetter, Sven Zuehlsdorff, Marie-Pierre Jolly, Andrew E. Arai, Jens Guehring, and Peter Kellman Siemens Corporate Research, Princeton, New Jersey, United States, Imaging & IT Division, Siemens AG, Healthcare Sector, Erlangen, Germany, CMR R&D, Siemens Medical Solutions USA, Inc., Chicago, IL, United States, Laboratory of Cardiac Energetics, National Institutes of Health, National Heart, Lung and Blood Institute, Bethesda, MD, United States
منابع مشابه
Motion correction for myocardial T1 mapping using image registration with synthetic image estimation.
Quantification of myocardial T1 relaxation has potential value in the diagnosis of both ischemic and nonischemic cardiomyopathies. Image acquisition using the modified Look-Locker inversion recovery technique is clinically feasible for T1 mapping. However, respiratory motion limits its applicability and degrades the accuracy of T1 estimation. The robust registration of acquired inversion recove...
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T1 mapping is a promising quantitative tool for assessing diffuse cardiomyopathies. The purpose of this study is to quantify in vivo accuracy of the Modified Look-Locker Inversion Recovery (MOLLI) cardiac T1 mapping sequence against the spin echo gold standard, which has not been done previously. T1 accuracy of MOLLI was determined by comparing with the gold standard inversion recovery spin ech...
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Background Cardiac magnetic resonance (CMR) imaging using phase sensitive inversion recovery (PSIR) late gadolinium enhancement (LGE) is the in vivo reference standard for assessing focal myocardial scar. Post-contrast T1-mapping by Modified Look-Locker Inversion recovery (MOLLI) can be used to generate a Synthetic PSIR LGE (SynLGE) image with an image contrast similar to conventional LGE image...
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Methods Myocardial T1 and T2 mapping at 3 Tesla MR was obtained from 24 healthy volunteers (16 males and 8 females, mean age, 31±4 years). Shortened modified looklocker inversion recovery was used for T1 mapping and T2-prepared single-shot steady-state free precession was utilized for T2 mapping. Automatic motion correction was done by an elastic registration algorithm based on estimating motio...
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Background T1 mapping enables true quantitative assessment of myocardial tissue, separating scars and healthy myocardium. The modified Look-Locker inversion recovery (MOLLI) sequence acquires eleven images over the duration of a minimum of fifteen heart beats to obtain the final T1 map, which is susceptible to undesired respiratory motion due to a relatively long breath-hold. We aimed to implem...
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تاریخ انتشار 2011