منابع مشابه
comparison of maximum signal intensity of magnevist contrast agent in modified t1 weighted spin echo, t1 weighted fast spin echo and t1 weighted gradient echo sequences
background: nowadays mri examinations have been widely used in clinical applications for many diagnoses. the use of contrast agent in mri improves lesion detection and characterization and causes more accurate diagnosis. objectives: the aim of this study was comparing to optimal dose of magnevist contrast agent in modified t1w se (spin echo), t1w fse (fast spin echo) and t1w gre (gradient ech...
متن کاملcomparison of maximum signal intensity of contrast agent on t1-weighted images using spin echo, fast spin echo and inversion recovery sequences
conclusion using standard imaging parameters, each mri sequence reaches its maximum si in a specific contrast concentration, which is highest in se and least in ir in a comparison between se, fse and ir sequences. results this study shows that maximum si will appear at different ranges in different sequences. the maximum si can be seen at concentrations of 5.95, 4.96 and 3.98mmol/l for se, fse ...
متن کامل"Spin-echo Like T1 Contrast" Volumetric Black-Blood Images Using 3D LOWRAT: Low Refocusing Flip Angle TSE
Introduction: T1 contrast is typically acquired using multi-slice two-dimensional spin-echo (2D SE), inversion recovery fast spin echo (T1 fluid-attenuated inversion recovery : T1FLAIR) or 3D T1-weighted spoiled gradient-echo (3D T1TFE) imaging [1]. However, these conventional methods have problems when used for contrast enhancement studies. 2D-SE requires long scan time for 3-plane diagnosis, ...
متن کاملAssessment of the Characteristics of MRI Coils in Terms of RF Non-Homogeneity Using Routine Spin Echo Sequences
Introduction: One of the major causes of image non-uniformity in MRI is due to the existence of non-homogeneity in RF receive and transmit. This can be the most effective source of error in quantitative studies in MRI imaging. Part of this non-homogeneity demonstrates the characteristics of RF coil and part of it is due to the interaction of RF field with the material being imaged...
متن کاملComparative Evaluations of 3d Turbo Spin Echo (tse) Motion Sensitized Driven Equilibrium (msde) and 2d Double Inversion Recovery Tse Sequences for T1-weighted Black-blood Carotid Atherosclerosis Imaging
Introduction In vivo MR carotid plaque imaging has been used to identify vessel morphology and plaque characteristics, and their associations with clinical symptoms. [1] Two-dimensional T1 weighted (T1W) double inversion recovery spin echo [2] and subsequently quadruple inversion recovery spin echo sequences [3] have been used to obtain the contrast between vessel wall and lumen, and identify c...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2000
ISSN: 0740-3194,1522-2594
DOI: 10.1002/(sici)1522-2594(200004)43:4<577::aid-mrm12>3.3.co;2-4