Measurement of T1 value using EPI sequence.
نویسندگان
چکیده
منابع مشابه
The value of pre-contrast T1 measurement for dGEMRIC
INTRODUCTION Delayed gadolinium enhanced MRI of cartilage (dGEMRIC) has been demonstrated as a technique for molecular imaging of proteoglycan in cartilage, in which Gd(DTPA) distributes in cartilage in relation to the concentration of the charged gylcosoaminoglycan (GAG) molecules. Currently post-contrast (Gd-DTPA) spin-lattice relaxation time (T1Gd) is used as dGEMRIC index to determine relat...
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Background Slice interleaved T1 (STONE) mapping sequence was recently proposed to take advantage of increased recovery time of spins to improve accuracy and precision of native myocardial T1 values. In this sequence, a nonselective inversion pulse is followed by acquisition of the data for different slices. Therefore, blood pool may experience different recovery time at different slice location...
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This thesis presents a high-resolution volumetric technique to measure the longitudinal relaxation time T1 in the vessel wall using MRI. The method of Variable Flip Angles (VFA) was applied using a new strategy for flip angle selection that allows measurement of T1 with high accuracy (< 10% mean error) and precision (T1-to-noise ratio > 10) over the wide range of anticipated values (300-3000ms)...
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M. J. Nissi, L. J. Lehto, C. A. Corum, D. Idiyatullin, O. H. Gröhn, and M. T. Nieminen Department of Physics, University of Kuopio, Kuopio, Finland, Department of Clinical Radiology, Kuopio University Hospital, Kuopio, Finland, Department of Biotechnology and Molecular Medicine, University of Kuopio, Kuopio, Finland, CMRR, University of Minnesota, Minneapolis, MN, United States, Department of N...
متن کاملFree-breathing multislice native myocardial T1 mapping using the slice-interleaved T1 (STONE) sequence.
PURPOSE To develop a novel pulse sequence for free-breathing, multislice, native myocardial T1 mapping. METHODS The slice-interleaved T1 (STONE) sequence consists of multiple sets of single-shot images of different slices, acquired after a single nonselective inversion pulse. Each slice is only selectively excited once after each inversion pulse to allow sampling of the unperturbed longitudin...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1997
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00001355043