High resolution fast T1 mapping technique for dGEMRIC
نویسندگان
چکیده
منابع مشابه
A B1-insensitive High Resolution 2D T1 Mapping Pulse Sequence for Radial dGEMRIC of the Hip at 3T
Introduction Femoroacetabular impingement (FAI) [1] is a medical condition in which the abnormal contact between the acetabular rim and femoral neck causes labral and chondral damage that progress over time and can result in osteoarthritis (OA) of the hip. In FAI, detection of cartilage damage in its early stages is critical to the success of joint preserving surgeries aimed at correcting the b...
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Introduction Quantitative MR techniques have become increasingly on demand in human brain imaging. In particular, accurate mapping of the longitudinal relaxation time, T1, and water content, M0, is of prime interest pushing the development of techniques with high spatial resolution and short experimental durations. The current most efficient method for obtaining T1 maps is based on acquiring tw...
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The delayed Gadolinium Enhanced MRI of Cartilage (dGEMRIC) technique has shown promising results in pilot clinical studies of early osteoarthritis. Currently, its broader acceptance is limited by the long scan time and the need for postprocessing to calculate the T1 maps. A fast T1 mapping imaging technique based on two spoiled gradient echo images was implemented. In phantom studies, an approp...
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Background Gray matter (GM) pathology has high clinical relevance in multiple sclerosis (MS), but conventional MRI is insufficiently sensitive to visualize the rather subtle damage. Objective To investigate whether high spatial resolution T1 relaxation time (T1-RT) measurements can detect changes in the normal-appearing GM of patients with long-standing multiple sclerosis (MS) and whether these...
متن کاملFlip-angle-optimized fast dynamic T1 mapping
Purpose: To analyze the flip-angle dependence and to optimize the statistical precision of a fast three-dimensional T1-mapping technique based on the variable-flip-angle (VFA) method. The proposed single-flip-angle (1FA) approach acquires only a single 3D spoiled gradient-echo data set for each time point of the dynamical series in combination with a longer baseline measurement. Theory and Meth...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2009
ISSN: 1053-1807,1522-2586
DOI: 10.1002/jmri.21869